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This beauty is so close to finished.
I checked the output and it is transmitting 100 swinging 300 on low.
And the fan speed kicks up when keying the mic.
All looking good but the relay RL2 energizing prematurely when switching from standby to ready.
Thinking of rebuilding the entire section...
Texas Star's are 10 mtr. amps that have to be altered for non-cw use.
They are not illegal and should be built to a high standard.
I don't hear anything coming out of my toaster with my DX-500V on high,
only through one pair of my many pairs of speakers around the house.
:thumbup1:
You got a heck of a deal there for $25!
The tubes alone are worth $100 for the 5 used ones.
That insulation is most delecate on those heavy wires. Tape up the bad spots.
Re-install that tranny and see what comes on. Tube filaments, panel lamps?
At least the fan on the back?
This amp is to be driven very lightly.
The max. recomended input power is 2W deadkey and 15 swing!!
Never ever drive this amp with another amp, in fact turn even your radio down. I'm working on one now that was driven with a 2 pill and that fried a number of circuits.
I experience slightly reduced output on my external meter after a rain with both my Antron and 3 element beam.
Not sure if it's for real or if it's the water fooling the meter.
I try to avoid long keyups right after or during a rain.
Who has the real explanation for this?
I checked Tr 3. 4, 6, and 7 for short since they were all around the relay - no shorts found.
Looking at the schematic would this keying transistor be Tr 3, 4, or 5?
and what about IC 1 and 2 that are nearby?
Does anyone have any voltage test points and values for this 1000?
Will anyone help me to get the main relay RL2 to opperate correctly?
I've put 5 hrs into this amp so far and have the filament, the 12V circuit, and the B+ all up and running well.
However, when I flip the switch from stdby to ready, not only do I get the B+ going but also the RL2...
Absolutely worth it!
Looks to be an hour of work or less, and with the new regulator and audio driver suggested earler will do even more.
Who wouldn't want to kick their amp with 50W of PEP instead of 15?
And with just an hours work that will kick that amp for years to come?
Just install the...
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