RubenRubio -
Sounds like it is defective - be sure to check the output of the 3.8G oscillator. The low band amps are available on e-bay, just be sure to check it as soon as you get, and run it in your 8340 for a couple of days before deciding to keep it.
The remaining problems may be related to unleveled RF output adjustments or possibly a bad card.
Cheers!
Bruce
Quoting RubenRubio <rubenrb2019@...>:
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Hello Bruce
I found the first (and hope the only) culprit of this issue: the band 0 power amp. Tried inside the 8341A and outside, feeding it with my lab power supply and sig gen and no amplification at all. The service manual talks about 40 dB of amplification, but a few mV measured with scope is what I found, with correct frecuency (100 Mhz). The output of the mixer is about -17 dBm, I think this is normal, because manual says 9 dB atten thru mixer.
The amp is clearly dead, I search for info in the manual, but I don't think I can do much to fix it, so I'll buy spare from eBay.
Regards,
R.
