Hi to the list, I am having interference problems when I work Phones satellites while the Trackbox is tracking. Every time I work a satellite on phone mode I can hear on the downlinks frequencies the tic tic sound Clock of the CPU of the Trakbox which interferes on the rx frequencies of the satellite. This happens on all the satellites but it is more amplified when I am on ssb mode. Anybody had the same experience and has solved it? If yes how to solve it. Any help will be appreciated.
73 de Enzo IK8OZV EasyLog 5 BetaTester EasyLog PDA BetaTester WinBollet BetaTester D.C.I. CheckPoint Regione Campania Skype: ik8ozv8520
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Enzio,
When I built my T_B years ago, I added some small ferrite chokes inside the aluminum box for the CAT, power, and rotator control lines. Since there should be no RF, the values are not critical. Mine came from my junk box. I did not need them, but some small bypass capacitors at the inputs might help. Using an aluminum box with good shielding resulted in no RF noise.
You might try a good external RF clamp on choke on the external lines. This should at least allow you find where the problem is. Don't forget to check the LCD display if it is not one or more of the lines. Some of them can also radiate. Finally, a conventional noise blanker is often effective with impulsive noise.
Good luck,
Alan WA4SCA
participants (2)
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Alan P. Biddle -
Vincenzo Mone