looks like the AF amplifier is fine now, using abt 3 mA at 12V, Xtal oscillator uses abt 5 mA at 5V. Quite a bit lower power than the FT-817.
Having only one power supply in the shack for experimantation, I need to find a 78(L)05 in my pile of components, so I can test the XO and mixer. I wonder if the output of the XO is sufficient to drive the relatively low impedance (abt 2kohm) of the mixer. but guess it will.
No more soldersmoke for today. maybe a bit of reading for now.
Opening on the 40 MHz band between the UK and Australia - 8th Nov 2025
-
Even though we have passed the peak of the current sunspot cycle,
conditions on the higher HF bands and the low VHF region are still very
good.
On the 8...
23 hours ago
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