vrijdag 22 mei 2015

Useable state

After some refinements The transvertor is usable.
However I am not satisfied with its performance. So I will need to make more adaptions.

Problems that remain.
  • At some bands edges the harmonic suppression is not good enough. Fortunately the ssb part of the bands are usable. The CB radio has no CW anyway.
  • 14 MHz band does not work anymore. One of the relays in the band pass filter is not working . This type of relay is very hard to find as it is some unknown Russian or Ukraine brand. I will have to make an adapter for the relays that I have in stock.
  • Power output is low. It produces about 3 watts. |This can be improved  by using13,8Volt instead of 12. I would like to have 5 Watts output.
The positives.
  • The receiver works quite well, even on the crowded 40 meter.
  • SSB TX signal sounds good
 Some improvements:
  • Feed the CB radio from the transceiver. The transformer  inside the transverter is big enough to handle this. When this works I can get rid of the extra power supply.
  • make a nice front to make it look better.