I recently acquired a 250 watt 10 meter amp that works well with 100 watt rigs when power into the amp is set to 10 watts.
The output is fine. It runs cool to the touch even when I get long winded into a nice wire antenna cut to the middle of the 10 meter SSB voice band allocation. I get peak power up to 320 watts. The problem I encounter is when I turn the amp on. It immediately attenuates the receive signal by 20db.
What should I look for first?
This is a generic, brick type amp made before the surface mount RM Italy stuff came out. Sadly, it did come from an 11 meter environment. Estate sale stuff.
Of note, I replaced a burnt fuse as soon as I bought. It was inexpensive. Sold as not working.
Thanks ahead of time.