We received some stock of the new KL503 broadband (well a little) mosfet amplifier this week. 8 little irf520’s in a near row I thought. I was wrong, there were 9.
It has one driving 8. Disaster. max input is only about 10 watts PEP. how can we drive this with our 40 watt radios. Bugger bugger bugger. I thought I was buying 2ea kl203’s in parallel and instead I ended up with this!!! I don’t own a 12w single final CB. What were RM thinking of when they made this? Maybe they wanted to hold the output down to protect the 8mosfets in the final from overdrive by sacrificing the driver?
It looks like a kl500 except it is blue. Works OK. it put out 300watts and that was about it. but that is still pretty good for the price. Drawing 24-25 amps on SSB to do that. Nice enough and cheap enough but I wish they had done away with that driver section. When will they come out with a cheap 40-50W input amp?
Plug is nice and easy to use…..