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1 Watt QRP CW Transmitter Kit for Amateur Radio 20/30/40 Meters
The QRP20C QRP30C QRP40C amateur radio CW transmitter kits are easy one evening projects.
Product #: QRPTX   In Stock: 0
Our Price: $44.95
Expected Replenishment Date: Discontinued
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PLEASE NOTE: Ramsey has discontinued all their consumer kits.

Despite removal of the Morse Code requirement for earning an amateur radio license, CW mode continues to be popular and a lot of CW signals can be heard on the bands. The QRP20C, QRP30C, and QRP40C transmitter kits provide a quick and inexpensive way to put your 'fist' on the air. These little transmitters are very portable and easily transported anywhere for operation on the go. It's amazing just what a watt will do! The 20 page step by step construction manual will help you get your kit built quickly and on the air in no time. The rigs use a standard crystal that is integrated into a VCXO circuit. This means that the crystal's frequency can be varied by a total of up to 20 KHz. Crystal control is very stable while enabling a tunable transmit frequency range. The front panel switch enables you to choose between two crystal controlled frequency ranges. One crystal at the international QRP frequency is included with each kit. Crystals are readily available and you can add another of your choice. There's plenty of room inside the case for your own modifications. For instance, you could add a rotary switch and a bank of crystals for greater band coverage. That's one thing that's so great about Amateur Radio. You can play with transmitter construction to your hearts content. A built-in transmit/receive switch allows break-in operation. These transmitters interface perfectly with our QRP Mini-rig receivers, our CMOS CW keyer, and our 20 watt linear amplifier. This kit requires a 12 VDC 250 mA power source. It will operate on batteries, automotive power, a plug-in power supply, or an AC adapter.

A crystal at the international QRP frequency is included with each kit...

QRP20C - 14.06 MHz, 8 - 10 KHz of tuning around the crystal frequency.
QRP30C - 10.108 MHz, 5 - 8 KHz of tuning around the crystal frequency.
QRP40C - 7.040 MHz, up to 7 KHz of tuning arout the crystal frequency.
  • Great for portable operation
  • Built-in antenna T/R switch
  • Operates CW mode
  • Front panel switching between two channels
  • One crystal (international QRP frequency) included as described above
  • Transmits in CW mode
  • Excellent clean keying waveform
  • Operates on 12 - 15 volts DC at 250 mA current
  • Approximately 1 Watt of RF power
  • Clear, concise step-by-step instructions carefully guide you to a finished kit
  • Proven functional design that is in use by many operators around the world
  • Includes a case and knob set for a finished professional appearance.
Other Details and Specifications...
  • 4 Transistor circuit, oscillator, RF amp chain, and clean keying stage
  • RF output approx 1 Watt (.75W for QRP-20)
  • Pi-network output for good matching and harmonic suppression
  • Provision for two internal crystals, front panel switching
  • VCXO tuning, frequency can be tuned approx 5 to 20KHz (depending on the band) around the crystal freq.
User Manual for 1 Watt QRP CW Transmitter Kit for Amateur Radio 20/30/40 MetersView The 1 Watt QRP CW Transmitter Kit for Amateur Radio 20/30/40 Meters User Manual

Please allow ten business day shipping for this item.

To order more than one transmitter of different bands, after clicking order for the first, return to this page and select an amplifier for another band.

A 12 - 15 Volt Power Supply or equivalent batteries is required. (Not Included)
NOTE: An FCC amateur radio license is required to operate this transmitter.

What You Get...
20, 30, or 40 Meter QRP Transmitter Kit including case.

Your satisfaction is our guarantee. If you are not satisfied with your purchase, contact us within ten days for an RMA (Return Merchandise Authorization).
Software and consumables may not be returned.
Restocking fees may apply upon return of some items.
Unassembled kits may be returned within ten days of receipt. Parts and components are warranted against failure for 90 days.

Please review these other products:
20 Watt QRP Linear Amplifier Kit for Amateur Radio 40 Meters
The QAMP40 amateur radio linear amplifier kits are easy one evening kits. Connected to your QRP transmitter, they provide that extra punch while operating in marginal propagation conditions. May be driven with 1/2 to 2 watts...
Our Price: $47.95

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