Two Viking 1 Questions

[w1vtp]

4D32's are available for $24.50 each at Fair Radio.

Good price.  Looks like they have a quantity of 'em

[DMOD]

Those ARE good tube prices. Surplus Sales did say they were 1977 manf. tubes.

I found the problem to the "Case-of-the-Grounded PA-Grid-Bias,"  etc.

I shouldn't have gotten on Hammy's case too much but when Hammy updated the meter to the VikingII config (with ckoke coil , etc) he "globbed" solder on the + terminal (red wire) and the glob was touching the copper coating of the meter shield. It was almost impossible see; I finally took a magnifying glass and mirror and started looking at the metering connections and the meter switch. All metering now appears to be normal.

I scoped the Osc and Buffer and PA grid and they are showing very nice sine waves to the final's grid with a 7.160 Mhz crystal.

And oh yes, the PA grid bias is a solid -76 Volts.

Tonight I will check output power and modulation and hopefully find a QSO to join. I have 3.705, 3.725, 3.880, 3.885, and 3.890 75m crystals.


Phil - AC0OB