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vinrads · 9th Mar 2018, 9:38 am

Thank's for the replies, tried different valves , just the same with no valve I can trace the origin of the two volts ,it gets it via a what they call a filter tx it looks like the other IF TX's but is stamped filter , so one end of this filter goes to a heater pin the other goes to the anode of the first valve , this is not the oscillator valve that is the second valve in the chain. connecting a capacitor from grid to anode pins with valve removed produces a signal but very weak .

I thought I had a bad connection with the probe on my Fluke meter which sometimes happens, but no there is only two volts . Mick.

9th Mar 2018, 9:38 am	#13
vinrads Dekatron Join Date: Feb 2009 Location: Chesterfield, Derbyshire, UK. Posts: 3,764	Re: Strange low volts on rf amp on a two volt battery set Thank's for the replies, tried different valves , just the same with no valve I can trace the origin of the two volts ,it gets it via a what they call a filter tx it looks like the other IF TX's but is stamped filter , so one end of this filter goes to a heater pin the other goes to the anode of the first valve , this is not the oscillator valve that is the second valve in the chain. connecting a capacitor from grid to anode pins with valve removed produces a signal but very weak . I thought I had a bad connection with the probe on my Fluke meter which sometimes happens, but no there is only two volts . Mick.