| QRP CW
Transceiver 144 MHz with VXO and direct conversion |
A simple construction 2m
transceiver, which myself give set in two days . RF power 500 mW, stable VXO with two switched crystals - for-tuning 500 kHz. An ideal rig for unpretending portable operation. |
| QRP 500mW transceiver 3.5 MHz with A244 |
CW transceiver for whole 80m band
with direct conversion and very little consumption. Suittable for power supply from battery. |
| Mini QRP CW transceiver 3.5 MHz |
A very simple minitransceiver
with VXO in 80m band - used "TV" crystal 3579 kHz. RF power 800 mW, on RX part in the mixer only ONE diode... but listening. |
| PA 5W for 80m band with KU611 |
Power amplifier for 3.5 MHz band,
power supply 12V. It requires 500 mW input for full power 5 Watts. Self-bearing construction.
|
| Mini ATU for portable LW aerials |
A small antenna tuner for tuning especially LW antennas on portable position. The tuning reel by motion ferrite stick. It has an built-in antenna current meter so myself behind-come round also without SWR meter. |
| CW/SSB
RX for 80m band with direct conversion |
A portable receiver for 80m band,
supplied 9V battery 6F22. The RX has a very good sensitivity, for listening is 1m of wire
is well. The heart of receiver is A244, I utilized the internal oscillator of this one. I use it often for searching lamps produces interference on the habitation. |
| PA 5W for HF transceiver with KT907 |
Power amplifier with maximal RF output 5W for range 1.8 až 30MHz. It allows fluent regulation of power output from hundreds microwatts to 5W. The active element is one KT907 (KT904), power supply 24V.
|
| TRX Pixie 2 for 80m band |
Amazing simple CW transceiver - power output 150mW, feeding 12V.
No adjustment, no tuning, no align and any band available after change Xtal and output elements! "Cult" rig for us - QRP hams.
|
| VFO for radio Nivea II for 20m band |
External oscillator for childrens telegraph QRP transceiver designed by Petr OK1XGL for acquaintance
and experimenting with radio technology and communication techniques.
|
| SWR meter - bridge with LED diode |
Very simply resistored SWR meter with superbright LED diode for 1.8MHz to 50MHz bands and power 10W max. An ideal indicator for portable operation.
|
| Menos es MAS |
An ultra-minimalist 80m transceiver originally built by Michael AA1TJ for the MAS (Minimal Art Session) event.
|
SM0VPO - Harry's Homebrew Homepages