Designed to match our Limerick Sudden receiver kit. The circuitry is a VXO, followed by a buffer and the PA is a 2N3866. The output is around 2 watts, the VXO & buffer are keyed by another transistor and there is muting on the RX antenna feed. There are 4 toroids to wind – a coupling transformer, and the 3 inductors of the 7 element low pass filter.
Due to the built in receiver muting, the transmitter operates full QSK. The kit uses the “Limerick” method of construction, as used in the earlier receiver. The pads are actually etched on the board (like surface mount), and the interconnections between them are PCB tracks, hidden under the solder masking. No "through hole" connections are made, although "through hole" components are used. The kit includes all components, the complete case, and knob. All you need to supply is a soldering iron and solder, and a few simple hand tools. The iron should be of a reasonable size, as the case is made by soldering the parts together, and a low power iron may not be "man" enough.
The transmitter output is 50 Ohms and will need an ATU unless the antenna presents the correct 50 Ohm load. The kit is now available for 40m and we are working on versions for 160m through 20m. The cost is £34 plus postage - £2.50 (UK), £4 (EU), or £5 (DX), and should be ordered from club sales. You can download the full manual from here.
Finally, we are already working on the next kit and this will be a matching all band ATU and we expect it to be available in the middle of 2011.
Read about the companion Sudden Receiver Kit.More Photos.
Transmitter with matching Receiver
Download the excellent manual: Sudden_TX_Kit_manual_40m.pdf
To order your kit please contact Graham Firth G3MFJ
Members Price - only £34.00 (Non-members £40)
(Click here to learn about membership rates)
Postage and Packaging extra. £2.50 for the UK. £4.00 for EU. £5.00 for DX.
