[NLRS] Attacking 10G transverter.

[Dr. Gerald N. Johnson]

New bench put into service. Testing for sensitivity using my 8540B too 
drive an HP423a detector backwards as a harmonic generator. 5 dB (MCL 
VAT out of its frequency range too) attenuator on the 10G size. Driving 
with 384.000 MHz. Its spread over a few kHz, locked or unlocked. 
Relative MDS is with about 1.2 volts RF drive at 384 MHz. The harmonic 
output is surely very dependent on drive level. I could maybe use my 
1152 LO chain but then I'd need more attenuators and might have to fix 
it first. The 8540B is working.

Opened up the transverter, I find the RF stage has Ar on it (white 
ceramic case) and has been worked on. Checking voltage I find 0.39 volts 
on the output and 0.30 on the input. I presume that's a sign its 
shorted. Next I have to set up for work that small on the new bench and 
see if I can replace it with a new 86576 that I bought for this occasion 
a year or two ago. Need to be sure I have some really fine solder wick.

73, Jerry, K0CQ