I am building a small 500 KHz transceiver. It will be simple using stuff from the Junkbox. I expect that it can be build quickly.
It will be a simple super with 4.433 KHz As IF. The local oscillator will be 500 KHz lower. I found 2 xtals that can be used to generate signals 3.93 KHz apart. A NE602 Mixer will be used to mix those signals. The wanted 3.93 MHz signal can be filtered out using a bandfilter.
The IF strip will be based on the bitx 20 concept. I will use a Mc1350p as IF amplifier. Building AGC is not difficult using this amplifier. It will be suitable for SSB so I can use WSPR.
Current status:
Xtal oscillators and mixer are ready. Some fine tuning needs tor be done though.
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