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Texas Star dx100
- Thread starter AA1QD
- Start date
In the early days there was some confusion on what to label this button "LOW AM" which was actually designed to pad the input with a 100 ohm resistor when SSB was used. Pressing the button in also engaged the SSB delay cap which is very annoying on AM. On later models the orange "LOW AM" button was switched out to a yellow "SSB" button.
So for AM mode you would leave the "LOW AM" button (OUT) and in for SSB operation.
2 watt carrier with peak power @ 20 watts max.
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Hooked it up to a 50 ohm dummy load, loud buzz in amp when keyed? Bad or stuck relay? With a 2 watt carrier from the radio, the buzz seems to get louder with modulation. Anyone one familiar with this problem?
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are you sure you had an adequet power source?? mine buzzed on my 250 with a battery that was apparently almost dead, but the problem was corrected when i hooked it up to a 25 amp DC supply.
First check that you don't accidentally have the coax connectors on the back of the unit reversed.
Might be Q1, the keying transistor.
http://www.cbtricks.com/Amp/txstar/dx100/graphics/ts_dx100_pcb_layout.pdf
Might be Q1, the keying transistor.
http://www.cbtricks.com/Amp/txstar/dx100/graphics/ts_dx100_pcb_layout.pdf