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Perspex Case
HF Beacon Radio Case in transparent Perspex
R240.00
Shack Clock Kit Assembled
R481.00
Clock Kit for The Shack
R381.00
The QRP-Labs Ultimate3S kit in a bundle with the popular bands. Deluxe 6-band U3S set
R2,400.00
QLG1 GPS Receiver kit from QRP-Labs
R462.00
QLG1 GPS Receiver kit from QRP-Labs (Assembled)
R562.00
GPS-case.jpg
A transparent case made from Perspex for the QLG1 GPS Kit
R50.00
QRP Antenna Tuner 1-30Mhz up to 20 watts (like the eBay one called "Days") for Amateur and Ham Radio with SWR Indicator
R230.00
Relay Switch Board Assembled and Tested
R421.00
S15351A Frequency Synthesizer Oscillator Assembled and Tested
R255.00
S15351A Frequency Synthesizer Oscillator Kit
R155.00
Ultimate3S
The Ultimate3S QRSS/WSPR kit was launched in January 2015. It uses an Si5351A synthesiser kit, optionally GPS disciplined. The kit can transmit at least 18 different QRSS, JT65 and WSPR modes on all amateur bands from 2200m to 2m. Assembled and Tested.
R792.00
Ultimate3S
The Ultimate3S QRSS/WSPR kit was launched in January 2015. It uses an Si5351A synthesiser kit, optionally GPS disciplined. The kit can transmit at least 18 different QRSS, JT65 and WSPR modes on all amateur bands from 2200m to 2m.
R662.00
U3S Case
Aluminium Case for Ultimate 3S beacons and related kits
R441.00
Perspex Case
Case Kit (Perspex) (PUCase)
A beautiful locally produced case made from perspex.

The complete set includes:a few of the essential elements, such as plugs and switches. Refer to the photos.

There is plenty of space in the box for more stuff to be added (voltage regulators, amplifiers, more modules, who knows!).

Typically the right toggle switch is labeled "Power", for switching the unit On and Off. I purposely left out an "On" and "Off" label because different parts of the world disagree on whether On should be down or up, e.g. US has "On" conventionally up, whereas UK has "On" conventionally down. When wiring the power switch, simply use two of the switch terminals, i.e. use the switch in single-throw (SPST) mode; for example, wire the switch between the incoming +5V lead from the power socket, and the +5V pad on the U3S board edge.

The left toggle switch can be used for whatever else you want. You could use it to select power level, switch the LCD backlight off, or any other thing which takes your fancy.

Construction is straightforward and you can customise it to your need. The top and bottom is held together by two screws.

Make sure that provision is made for adequate ventilation and additional holes may be necessary.

This is a kit and you will only be receiving a plastic bag with components that you have to assemble yourself using appropriate tools and skills. Assemblers may be available at additional cost for some kits. The photos are only representative examples of the completed kit. Always download the latest information from the website at http://www.qrp-labs.com
HF Beacon Radio Case in transparent Perspex
R240.00
Clock (Assembled) (CLOCK(A))

This is a shack clock kit which can optionally also be connected to a GPS receiver module such as the QLG1 to provide precise time. Alternatively it can be used standalone or with a different 1 pulse per second (pps) signal source.

This clock kit is based on the same hardware as Ultimate3/3S QRSS/WSPR kit and a special firmware version. A GPS receiver module such as the QLG1 can optionally be connected for precision time-keeping. The display format is customisable; as well as time and date, you can also choose to display GPS data (e.g. location, number of received satellites, etc).

The clock can be configured to display time, date, and various information decoded from the GPS serial data stream. Two Analogue temperature sensors an optionally be connected to the kit, so that temperature measurements can be displayed (for example, indoor and outdoor temperature). The contents of the display are configurable. The photographs on this page show the default configuration of the clock display.

Shack Clock Kit Assembled
R481.00
Clock Kit (CLOCK)

This is a shack clock kit which can optionally also be connected to a GPS receiver module such as the QLG1 to provide precise time. Alternatively it can be used standalone or with a different 1 pulse per second (pps) signal source.

This clock kit is based on the same hardware as Ultimate3/3S QRSS/WSPR kit and a special firmware version. A GPS receiver module such as the QLG1 can optionally be connected for precision time-keeping. The display format is customisable; as well as time and date, you can also choose to display GPS data (e.g. location, number of received satellites, etc).

The clock can be configured to display time, date, and various information decoded from the GPS serial data stream. Two Analogue temperature sensors an optionally be connected to the kit, so that temperature measurements can be displayed (for example, indoor and outdoor temperature). The contents of the display are configurable. The photographs on this page show the default configuration of the clock display.

This is a kit and you will only be receiving a plastic bag with components that you have to assemble yourself using appropriate tools and skills. Assemblers may be available at additional cost for some kits. The photos are only representative examples of the completed kit. Always download the latest information from the website at http://www.qrp-labs.com

Clock Kit for The Shack
R381.00
Deluxe 6-band U3S set, Kit (Deluxe 6-band U3S set, Kit)

Deluxe 6-band U3S set, Kit

This is a deluxe set of kits containing all the kits you need to build a smartly boxed, GPS-disciplined, 6-band QRSS/WSPR modes transmitter using the Ultimate3S.

Deluxe set contents:

The Ultimate3S QRSS/WSPR Transmitter Kit transmits various QRSS, Hell, Opera, PI4 and WSPR slow-signal modes on any LF, MF, HF or VHF band (all amateur bands from 2200m to 2m). This set comprises:

  • Base U3S kit with LCD module, microcontroller with latest firmware, and all board-mounted components
  • Si5351A synthesiser module kit (Si5351A chip is pre-soldered at the factory)
  • Relay-switched 6-band Low Pass Filter extension kit
  • Low pass filter kits for 10, 15, 20, 30, 40 and 80m
  • QLG1 high-sensitivity GPS receiver kit
  • 2 extra BS170 transistors, as spares or in case you want to try higher power output
  • Ultimate3 enclosure kit, drilled, printed, and with controls, connectors and accessories. Shipped separately from China by airmail

The kits are easy to build, with through-hole components only (no surface mount soldering). Additional plug-in low pass filter modules are available for any of 13 amateur bands from 2200m to 6m. The kit can transmit on any frequency up to 150MHz, with the appropriate low pass filters.

NOTE... LPF bands: if you want to have different LPF bands than the 6 listed above, that is fine! Please specify the required changes on the customer notes entry in the order form. 

NOTE... Receiver: if you add the receiver kit as an optional extra when you order, please note that the receiver kit includes a band pass filter kit. This is for your choice of any one band from 160m to 10m. Please specify which band you want for the band pass filter in the customer note fields when you checkout. 

NOTE... GPS: All the above kits will fit together inside the supplied enclosure. However the GPS patch antenna cannot work through a metal box! So you must either arrange for the GPS receiver to be outside in its own box, or you need to use an external antenna and run some coax into the box.

Please read the manuals and understand your kits before purchase. 

Printed instructions are not supplied with the kit! You need to download the following PDF instruction documents (click links to go to the web page where you can download the document):

The QRP-Labs Ultimate3S kit in a bundle with the popular bands. Deluxe 6-band U3S set
R2,400.00
GPS Kit (QLG1)
This GPS receiver module kit includes an extremely sensitive patch antenna, with factory pre-soldered Mediatek chipset RF module. It has three onboard LEDs for visual status indication, 3.3V regulator and power supply filtering, and 5V logic level conversion. It's easy to build and directly compatible with all QRP Labs kits.

The RF module uses the MediaTek chipset and it is essentially comparable to the QRP Labs supplied SKM61 GPS module. The board size is relatively large (91 x 64mm), this is to provide additional patch antenna gain. Most GPS receiver modules with built-in patch antenna are a compromise between small physical size and sensitivity. If we drop the size constraint, it appears that the antenna sensitivity is optimum with a large patch antenna (25 x 25 x 4mm size is the largest available) and a large 6 x 6 cm PCB ground plane. According to the antenna datasheet the gain is 7.5dBic over that of a 30 x 30mm ground plane. Most small GPS modules are of course smaller than 30 x 30mm. 

The board also includes supply filtering, 3.3V voltage regulator, and level converters to provide 5V input/outputs. The connectors are 0.1-inch pitch so they are easy to solder to. The 4-way connector pads section can be connected DIRECTLY to the Ultimate 3/3S QRSS/WSPR TX kit, with no pullups or decoupling capacitors. There are three 3mm LEDs on board, that give a visual indication of what is happening. They are:

Red: Power (always on)
Yellow: Serial data (flashes when the serial data burst is active)
Green: 1pps (flashes on for 0.1s once per second, when the 1pps signal is present)

Advantages of this module, compared to the SKM61 (and other comparable small GPS receiver modules), are:

1) higher sensitivity of built-in patch antenna, due to large ground plane
2) Provices facility for SMA connector and components for external active antenna if you prefer
3) Has onboard power / data / 1pps LEDs for an immediate visual indication of what is going on
4) Proper level conversion for use with 5V systems, not just pull-up resistors like on the SKM61
5) Larger connection pads with 0.1-inch pitch, suitable for easy wire soldering or pin headers
6) Voltage regulation and all components already on-board, no need for anything other than wire, for U3 connection
7) Low cost
8) A kit - fun and educational to build!

The kit contains the PCB with pre-soldered Mediatek chipset RF module, and all other through-hole leaded components for easy assembly. It also includes four nylon 12mm M3 hex spacers and four M3 screws, for mounting the PCB in an enclosure. The kit is supplied with a 25 x 25 x 4mm custom-manufactured tuned patch antenna. This is installed on the opposite side of the board to the other components. An SMA connector (not supplied) may be fitted if you prefer to use an external active antenna. A 3V rechargeable battery is included, which backs up ephermeris data and can ensure faster satellite lock after short-term loss of power. 

QLG1 GPS Receiver kit from QRP-Labs
R462.00
GPS Kit (Assembled) (QLG1(A))
This GPS receiver module kit includes an extremely sensitive patch antenna, with factory pre-soldered Mediatek chipset RF module. It has three onboard LEDs for visual status indication, 3.3V regulator and power supply filtering, and 5V logic level conversion. It's easy to build and directly compatible with all QRP Labs kits.

The RF module uses the MediaTek chipset and it is essentially comparable to the QRP Labs supplied SKM61 GPS module. The board size is relatively large (91 x 64mm), this is to provide additional patch antenna gain. Most GPS receiver modules with built-in patch antenna are a compromise between small physical size and sensitivity. If we drop the size constraint, it appears that the antenna sensitivity is optimum with a large patch antenna (25 x 25 x 4mm size is the largest available) and a large 6 x 6 cm PCB ground plane. According to the antenna datasheet the gain is 7.5dBic over that of a 30 x 30mm ground plane. Most small GPS modules are of course smaller than 30 x 30mm. 

The board also includes supply filtering, 3.3V voltage regulator, and level converters to provide 5V input/outputs. The connectors are 0.1-inch pitch so they are easy to solder to. The 4-way connector pads section can be connected DIRECTLY to the Ultimate 3/3S QRSS/WSPR TX kit, with no pullups or decoupling capacitors. There are three 3mm LEDs on board, that give a visual indication of what is happening. They are:

Red: Power (always on)
Yellow: Serial data (flashes when the serial data burst is active)
Green: 1pps (flashes on for 0.1s once per second, when the 1pps signal is present)

Advantages of this module, compared to the SKM61 (and other comparable small GPS receiver modules), are:

1) higher sensitivity of built-in patch antenna, due to large ground plane
2) Provices facility for SMA connector and components for external active antenna if you prefer
3) Has onboard power / data / 1pps LEDs for an immediate visual indication of what is going on
4) Proper level conversion for use with 5V systems, not just pull-up resistors like on the SKM61
5) Larger connection pads with 0.1-inch pitch, suitable for easy wire soldering or pin headers
6) Voltage regulation and all components already on-board, no need for anything other than wire, for U3 connection
7) Low cost
8) A kit - fun and educational to build!

The kit contains the PCB with pre-soldered Mediatek chipset RF module, and all other through-hole leaded components for easy assembly. It also includes four nylon 12mm M3 hex spacers and four M3 screws, for mounting the PCB in an enclosure. The kit is supplied with a 25 x 25 x 4mm custom-manufactured tuned patch antenna. This is installed on the opposite side of the board to the other components. An SMA connector (not supplied) may be fitted if you prefer to use an external active antenna. A 3V rechargeable battery is included, which backs up ephermeris data and can ensure faster satellite lock after short-term loss of power. 

QLG1 GPS Receiver kit from QRP-Labs (Assembled)
R562.00
GPS-case.jpg
GPS Perspex Case Kit (PGCase)
A transparent case made from Perspex for the QLG1 GPS Kit It measures approximately 116 x 82 x 32mm and you might have to drill a small hole for your connector and/or cable depending on how you decide to use it.
A transparent case made from Perspex for the QLG1 GPS Kit
R50.00
QRP Antenna Tuner ATU Manual Kit with SWR (QRPATU)
QRP Manual Antenna Tuner ATU Kit with SWR Indicator

Very lightweight and useful for field work, does not require external power. Very low losses.

Key Features of this manual antenna turner:
Tuning when exposed to direct transfer power: <20W
Tuning input power: <3W (works with 250mW beacons)
Tuning indication: LED display
Interface: PL259 type
Operating frequency: 1-30MHz
Antenna Interface: PL259 type
Matching antenna impedance range: about: 30 ~ 300Ω
Continuous RF power: up to 15W
Tuning required RF power: less than 3W

Package Included:


A waterproof sealed box
Stickers (used to determine the position of the drilling hole) 1
PL259 Block 2
Ordinary wire piece
Varicon capacitor 2
2 small knobs
0.25 countersunk head screws (for fixed variable capacitor) 4
The 0.25 head screws 2
0.3 gasket 4
0.3 nut 2
DPDT switch
Large knob
T106-2 the toroid (red) 1
0.5 enameled wire, Section 1,
A circuit board (standing wave indicator)
Red light emitting diode 1
51 ohm 2W resistor 3
FT37-43 toroid (Black) 1
1K resistor (light-emitting diode current limit)
1N60 1
0.1u capacitor 1
QRP Antenna Tuner 1-30Mhz up to 20 watts (like the eBay one called "Days") for Amateur and Ham Radio with SWR Indicator
R230.00
Relay Switch Board (Assembled) (Relay(A))
Assembled and Tested

This relay-switched LPF board kit can have up to five additional LPF's plugged in, permitting the Ultimate3 and Ultimate3S QRSS/WSPR kits to sequence between 6 bands (including the LPF on the main U3 board). The board size is 80 x 37mm, the same as the U3, so the boards stack together using four 25mm hex spacers. The plug-in LPF modules are available separately, click here.

The kit can also be used with your own homebrew radio projects!

Some people wish to interface this relay kit with 3.3V systems such as the Raspberry Pi, or systems which cannot support the 28mA relay current from processor I/O pins directly. This relay driver is suitable for such cases
Relay Switch Board Assembled and Tested
R421.00
S15351A Synthesizer (Assembled) (Synth(A))
Assembled and Tested.

The Si5351A is a relatively recent clock-generator chip manufactured by SiLabs. It can produce three simultaneous independent 50-ohm impedance, squarewave outputs between 8kHz and 200MHz [See note]. Configuration of the chip is via a microcontroller with I2C (two-wire) interface. This kit (a.k.a. "breakout board") contains pre-soldered Si5351A chip, 3.3V regulator, and I2C level converters.

This Si5351A synthesiser module kit (or "breakout board") runs from a 5V or 3.3V supply. The tiny 0.5mm pin-spaced Si5351A chip is pre-soldered to the PCB at the factory. The PCB size is 1.3 x 1 inches (33 x 25mm). The remaining components are all through-hole components so construction is easy. The circuit contains a 3.3V regulator and I2C level converters, for use with 5V microcontroller systems. The kit may also be built without the level converters or regulator, for use in 3.3V systems. The kit has a 2 x 10-pin 0.1-inch header for all connections. Additionally pads are provided on the PCB for soldering SMA connectors if you wish. The kit uses a 27MHz crystal as the reference oscillator.

The synthesizer may be used in a variety of projects. The pinout has been designed to be somewhat similar to the popular AD9850 DDS module and may be substituted in certain cases (with appropriate software changes in the controller). This Si5351A module is also designed to be compatible with the Ultimate3/3S QRSS/WSPR kits. It can be plugged into the U3 kit with certain minimal hardware modifications to the U3. It is directly compatible with the Ultimate3S kit without modifications. It requires Ultimate3 firmware v3.07 or above, to communicate with the Si5351A via I2C. Note that for use in the original U3, not U3S, (PCB revisions 1 to 4), pin 12 of the header needs to be removed before installation.

Starting from PCB Rev 4, the PCB has pads that will support use of a 7 x 5-mm or 5 x 3.2-mm SMD 27MHz TCXO (not supplied) instead of the supplied 27MHz crystal. Please refer to Rev 4 assembly manual, see below. 

NOTE: QRP Labs tested the actual frequency range of the Si5351A outputs. The minimum frequency configuration with 27MHz crystal produces 3.515kHz output. The maximum frequency appears to be an internal limitation (not limited by the configuration) and was approximately 292MHz. Of course, outside the specified range of the datasheet (8kHz - 200MHz), there are no guarantees...

S15351A Frequency Synthesizer Oscillator Assembled and Tested
R255.00
S15351A Synthesizer Kit (Synth)
This is a kit and you will be receiving a plastic bag with components. The photos are representative examples of the completed kit.

The Si5351A is a relatively recent clock-generator chip manufactured by SiLabs. It can produce three simultaneous independent 50-ohm impedance, squarewave outputs between 8kHz and 200MHz [See note]. Configuration of the chip is via a microcontroller with I2C (two-wire) interface. This kit (a.k.a. "breakout board") contains pre-soldered Si5351A chip, 3.3V regulator, and I2C level converters.

This Si5351A synthesiser module kit (or "breakout board") runs from a 5V or 3.3V supply. The tiny 0.5mm pin-spaced Si5351A chip is pre-soldered to the PCB at the factory. The PCB size is 1.3 x 1 inches (33 x 25mm). The remaining components are all through-hole components so construction is easy. The circuit contains a 3.3V regulator and I2C level converters, for use with 5V microcontroller systems. The kit may also be built without the level converters or regulator, for use in 3.3V systems. The kit has a 2 x 10-pin 0.1-inch header for all connections. Additionally pads are provided on the PCB for soldering SMA connectors if you wish. The kit uses a 27MHz crystal as the reference oscillator.

The synthesizer may be used in a variety of projects. The pinout has been designed to be somewhat similar to the popular AD9850 DDS module and may be substituted in certain cases (with appropriate software changes in the controller). This Si5351A module is also designed to be compatible with the Ultimate3/3S QRSS/WSPR kits. It can be plugged into the U3 kit with certain minimal hardware modifications to the U3. It is directly compatible with the Ultimate3S kit without modifications. It requires Ultimate3 firmware v3.07 or above, to communicate with the Si5351A via I2C. Note that for use in the original U3, not U3S, (PCB revisions 1 to 4), pin 12 of the header needs to be removed before installation.

Starting from PCB Rev 4, the PCB has pads that will support use of a 7 x 5-mm or 5 x 3.2-mm SMD 27MHz TCXO (not supplied) instead of the supplied 27MHz crystal. Please refer to Rev 4 assembly manual, see below. 

NOTE: QRP Labs tested the actual frequency range of the Si5351A outputs. The minimum frequency configuration with 27MHz crystal produces 3.515kHz output. The maximum frequency appears to be an internal limitation (not limited by the configuration) and was approximately 292MHz. Of course, outside the specified range of the datasheet (8kHz - 200MHz), there are no guarantees...

S15351A Frequency Synthesizer Oscillator Kit
R155.00
Ultimate3S
Ultimate 3S QRSS/WSPR Beacon (Assembled) (U3S(A))
Assembled and Tested

The Ultimate3S QRSS/WSPR kit was launched in January 2015. It uses an Si5351A synthesiser kit instead of the earlier pre-built AD9850 DDS module used on the U2 and U3 kits. The kit can transmit a variety of QRSS and WSPR modes on all amateur bands from 2200m to 2m.

The U3S kit was launched in January 2015. It is the new edition of the earlier U3 kit produced from November 2013 to December 2014. The U3S uses an Si5351A frequency synthesiser kit rather than the pre-built AD9850 DDS kit used in the earlier U3 kit. The AD9850 DDS kit prices are rising and they are becoming less easily available. The Si5351A frequency synthesiser kit was developed to ensure continued low cost of the Ultimate QRSS/WSPR kit series.

Please also see the original version Ultimate QRSS kit and Ultimate2 QRSS kit pages, and the earlier U3 kit page to appreciate the heritage. Much of the information in these earlier pages is still relevant and informative.

Options

The Ultimate3S QRSS/WSPR transmitter kit includes an Si5351A synthesiser module kit and plug-in low pass filter modules which are also available separately for bands from 2200m to 6m. The kit can transmit on any frequency from the amateur 2200m (137kHz) to 2m (145MHz) bands. Changing bands is a matter of plugging in the appropriate low pass filter kit to attenuate unwanted harmonic output. The relay-switched LPF kit may be used to automatically switch between up to 6 different bands.

A GPS receiver module such as the QLG1 kit can be used with the U3S kit. It is not strictly necessary. You can do everything manually. But the GPS receiver sets the time and maintains precise timekeeping, sets location (and Maidenhead locator), calibrates the output frequency, and corrects temperature-induced frequency drift. It's such a nice luxury, and for such a low price we really recommend it! The QLG1 kit is powered by 5V, includes proper logic level conversion to the 5V logic used in the U3S, and has onboard LEDs for visual status indication. It is designed specifically for the QRP Labs kits. It has a relatively large PCB ground plane that gives it excellent sensitivity!

There's an aluminium box available. It's a pre-drilled, printed anodised extruded aluminium case custom-made for the U3S. It includes an accessories kit: two buttons, two toggle switches, 9-pin D connector, power socket and matching plug, BNC connector, four self-adhesive "feet", and mounting hardware. 

The DELUXE U3S set makes ordering easy - the deluxe set contains U3S, relay-switched LPF kit, six LPF kits for the most popular bands (10, 15, 20, 30, 40, 80m), QLG1 GPS kit, and Enclosure kit. Also included are two extra BS170 transistors which you can fit in the U3S for increased output power (or keep as spares). 

The Ultimate3S QRSS/WSPR kit was launched in January 2015. It uses an Si5351A synthesiser kit, optionally GPS disciplined. The kit can transmit at least 18 different QRSS, JT65 and WSPR modes on all amateur bands from 2200m to 2m. Assembled and Tested.
R792.00
Ultimate3S
Ultimate 3S QRSS/WSPR Beacon Kit (U3S)
This is a kit and you will be receiving a plastic bag with components. The photos are representative examples of the completed kit.

The Ultimate3S QRSS/WSPR kit was launched in January 2015. It uses an Si5351A synthesiser kit instead of the earlier pre-built AD9850 DDS module used on the U2 and U3 kits. The kit can transmit a variety of QRSS and WSPR modes on all amateur bands from 2200m to 2m.

The U3S kit was launched in January 2015. It is the new edition of the earlier U3 kit produced from November 2013 to December 2014. The U3S uses an Si5351A frequency synthesiser kit rather than the pre-built AD9850 DDS kit used in the earlier U3 kit. The AD9850 DDS kit prices are rising and they are becoming less easily available. The Si5351A frequency synthesiser kit was developed to ensure continued low cost of the Ultimate QRSS/WSPR kit series.

Please also see the original version Ultimate QRSS kit and Ultimate2 QRSS kit pages, and the earlier U3 kit page to appreciate the heritage. Much of the information in these earlier pages is still relevant and informative.

Options

The Ultimate3S QRSS/WSPR transmitter kit includes an Si5351A synthesiser module kit and plug-in low pass filter modules which are also available separately for bands from 2200m to 6m. The kit can transmit on any frequency from the amateur 2200m (137kHz) to 2m (145MHz) bands. Changing bands is a matter of plugging in the appropriate low pass filter kit to attenuate unwanted harmonic output. The relay-switched LPF kit may be used to automatically switch between up to 6 different bands.

A GPS receiver module such as the QLG1 kit can be used with the U3S kit. It is not strictly necessary. You can do everything manually. But the GPS receiver sets the time and maintains precise timekeeping, sets location (and Maidenhead locator), calibrates the output frequency, and corrects temperature-induced frequency drift. It's such a nice luxury, and for such a low price we really recommend it! The QLG1 kit is powered by 5V, includes proper logic level conversion to the 5V logic used in the U3S, and has onboard LEDs for visual status indication. It is designed specifically for the QRP Labs kits. It has a relatively large PCB ground plane that gives it excellent sensitivity!

There's an aluminium box available. It's a pre-drilled, printed anodised extruded aluminium case custom-made for the U3S. It includes an accessories kit: two buttons, two toggle switches, 9-pin D connector, power socket and matching plug, BNC connector, four self-adhesive "feet", and mounting hardware. 

The DELUXE U3S set makes ordering easy - the deluxe set contains U3S, relay-switched LPF kit, six LPF kits for the most popular bands (10, 15, 20, 30, 40, 80m), QLG1 GPS kit, and Enclosure kit. Also included are two extra BS170 transistors which you can fit in the U3S for increased output power (or keep as spares). 

The Ultimate3S QRSS/WSPR kit was launched in January 2015. It uses an Si5351A synthesiser kit, optionally GPS disciplined. The kit can transmit at least 18 different QRSS, JT65 and WSPR modes on all amateur bands from 2200m to 2m.
R662.00
U3S Case
Ultimate Case Kit (AUCase)
The U3/U3S case is made from black anodised aluminium, dimensions 122 x 45 x 160mm deep. It's a 4-part case: front panel, back panel, top half and bottom half. The 4 parts are held together by 8 screws.

The front and rear panels are drilled and silk-screen printed for the Ultimate3 and Ultimate3s kits, as shown. The case also includes an accessory kit, with switches, buttons, connectors etc.

The complete set comprises:
  • 4-part black anodised aluminium case, 122 x 45 x 160mm deep, including 8 screws
  • 2x toggle switch
  • 2x push button, RED colour
  • 4x self-adhesive cabinet feet
  • 4x 6mm nylon hex spacer for mounting U3 to front panel
  • 4x black metal M3 screw for mounting U3 to front panel
  • BNC socket
  • Power socket
  • Matching power plug
  • 9-way D-connector (to be used for GPS, programming, whatever you want)
There is plenty of space in the box for more stuff to be added (voltage regulators, amplifiers, more modules, who knows!). The photos show a U3 with relay-switched LPF board and full complement of LPF modules plugged in.

The right toggle switch is labeled "Power", for switching the unit On and Off. I purposely left out an "On" and "Off" label because different parts of the world disagree on whether On should be down or up, e.g. US has "On" conventionally up, whereas UK has "On" conventionally down. When wiring the power switch, simply use two of the switch terminals, i.e. use the switch in single-throw (SPST) mode; for example, wire the switch between the incoming +5V lead from the power socket, and the +5V pad on the U3S board edge.

The left toggle switch can be used for whatever else you want. You could use it to select power level, switch the LCD backlight off, or any other thing which takes your fancy.

Construction is straightforward and you can customise it to your need. Remove the M3 nylon screws that bolts the LCD module to the main U3 board and instead screw in the four 6mm hex spacers. Then just bolt the U3 assembly behind the front panel using the four supplied black screws. When you need to access part of the U3 in the box, it is easy because you can remove the top and bottom halves independently.Important note! The top and the bottom half of the box are identical pieces. On one side, they have a U-groove. On the other side, an I-tongue. The top and bottom halves must therefore be orientated correctly so that the U of the bottom fits the I of the top, and vice versa on the other side. If it seems that your front/rear panels don't fit properly onto the box, then probably you have forgotten that you have to turn around one half of the box, so the U and I fit into each other!

The flats of the transistors are a few mm away from the lower half of the aluminium box. With some ingenuity there would be an opportunity here to fix the transistors against the lower aluminium so that it behaves as a large heatsink.

I strongly recommend:
  1. Inserting all screws loosely, and only tightening them up when they are all aligned in place.
  2. Do not over-tighten any screws, particularly the black metal mounting screws that are screwed into the nylon spacer. Over-tightening them would deform the nylon and the screw thread would lose grip.
  3. When fitting front panel controls be careful not to scratch the metal surface with pliers etc! I found that they can be tightened sufficiently by hand, as the nuts grip the panel. No pliers were needed, for the front panel controls. You will need pliers for the rear panel connectors.
This is a kit and you will only be receiving a plastic bag with components that you have to assemble yourself using appropriate tools and skills. Assemblers may be available at additional cost for some kits. The photos are only representative examples of the completed kit. Always download the latest information from the website at http://www.qrp-labs.com
Aluminium Case for Ultimate 3S beacons and related kits
R441.00
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