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There is no replacement for the RD16HHF. And, sadly enough, these radios are known to be a huge piece of s**t. So this failure is not a unique case. I have one myself, which blew both the driver and the finals, for no obvious reason, but I haven't dared to use it after it was fixed. Guess it...

Nice photos. But scaring to think of what would happen if the sun suddenly shut off.

How do I make one such ?

I was asking all these questions because I didn't want to detune the S-9, but I was hoping that I still could run this amp without blowing anything. I also didn't want to invent the wheel all over again, so I thought it was better to ask someone who maybe had done this combo before. I love...

Well...AM is not the most important thing here in Norway. Hardly anyone use it anymore. SSB is more interesting. Any neat tricks to keep the S-9 below 20 W on SSB ? The Zetagi amp has a 6 step output power switch. And as far as I can see on the schematics, it's possible that setting this...

I don't think you get what I mean...... Back in the days when I was even younger than now, I had an AM transmitter that was rated as 5 watts. No matter if I screamed into the mic, or didn't say a word, it still put out 5 watts. The ppl I talked to got a steady reading of me on their S-meters.

To make it transmit with a constant carrier level, regardless of the modulation applied.

But can't the "swing" feature be disabled, so it will only transmit with deadkey power at AM ?

Sounds nice. I'm an idiot. Any links ?

Thank you, cbradiomagazine.com. Is there any easy mods for fixing the Magnum's output power ? (My option B is to just use my other transmitter, so any extensive modding of the Magnum is out of the question.)

It says so on the box, but who cares, really ? Even YOU should know what kind of device I'm referring to.

I just got a linear amp (Zetagi B300P), which I intended to use with my Magnum S-9. However, the manual for the amp says that input power should not exceed 10 W for AM/FM use. How do you guys avoid blowing the input of your amps ? I mean, even at the lowest power-setting, the Magnum can easily...

The "cowboy" or should I say "cowboy light" image by truck-drivers is the main reason why I haven't accepted any jobs in that business. But if you want to sabotage someone's radio rig, you could just put a pin through the cable and cut the ends of it, so it won't be easily visible. This will...

Simply spray it with soap and water in a mild mixture. Blow it as dry as possible with comressed air or a hairdryer afterwards. Then leave it in a warm place for a couple of days to dry completely. The bathroom-floor (if it got heater-cables) will be fine.

I wouldn't trust a tip from anyone who doesn't know that the correct name of the "band" side of a diode is called "cathode".

Yes, I have output from the replaced FET. A strong and good signal, that is.

My Cobra 200 GTL got the well-known failure of the RD16HHF1 driver transistor. This has been replaced, but I still get no output. I have a good and strong signal all the way to one side of C 641 (left side of it as seen on the diagram). On the "right side" of C 641, the signal gets weaker...

My Cobra 200 GTL got the well-known failure of the RD16HHF1 driver transistor. This has been replaced, but I still get no output. I have a good and strong signal all the way to one side of C 641 (left side of it as seen on the diagram). On the "right side" of C 641, the signal gets weaker...

I think I need some tips here. I have now replaced the RD16HHF1 and adjusted current as told. But I still get no output power. The carrier signal is getting weaker and weaker as I follow it towards the output stage. The 2SC2290's seems ok when measured. Any ideas where to look ?

The manual says to adjust RV21 to a current of 1,3 A. What's your recommendation for setting the current ? And will I lose much output power by decreasing the current to your recommended level ?