Recent content by linearone

no. the 500z has silver solder in its pins. not regular lead 60/40. Its a dead giveway that tells you a tubes pins have been melted and resoldered. If you look at the pins and one or two are dull at the tip, thats the regular solder a moron tried to resolder them with, the factories use silver...

I didn't think to specify this but you should have been checking it on AC. You should be looking for five volts AC, not DC on the filament. I didn't know if you were aware of that or not

Don't worry about that . It's fine. Replace tube

I know it can happen but silver solder melts at around 1200-1500 degrees. You have to really try to melt a z pin. Do what he says. Step one see if you have 5v on filament. While in there make sure the contacts on the pins are bent in a way that they make contact etc sometimes they just break...

I'm sorry, that became more an essay on amplifier building than a helpful comment on an Ameritron. I apologize.

I have a very specific opinion on "glitch" resistors. 99% of people install a resistor on the b+ and think they did something. If the b+ isn't fused before the glitch resistor than the resistor becomes a slow blow fuse. I'd rather use a fast acting fuse and use the resistor to limit the current...

That exact same device is sold in a few places online. Actually that's wrong. It's sold in a ton of places. I bought a few of them to experiment with. 1200 w is a bold lie no matter what the heatsink is. The point is you just can't get that much heat off the die of those transistors. I'll be...

If you have high voltage that's half the battle. The rest is mainly switching RF in and out and metering. The ameritron amps can suffer any and all failures just like any tube amp. The problems you find with any amp are always one or more of the following. Issues with HV, no filament v, bad...

The only real benefit of adding another tube to an amplifier and not upgrading its plate supply is that you double the dissipation of the amplifier. Not the power out. This will aid in more demanding duty cycle operation.

Originally when @Moleculo posted the review showing the hash on the Chinese supply, they've been through a lot of changes at this point. Even the cheap ones usually don't throw any noise anymore, they figured out that they weren't working for us. The meanwell works fine for radio. I consider it...

The mega watt are fantastic. The meanwell are fantastic

There is a spanking new one on ebay from Peter dahl right now.

There's no way you're feeling a real one amp transformer in that case

The above advice by nomad is fantastic. The one word of caution is to heed his words and make sure that you drive it enough to give it a couple hundred watts output, maybe 20watt carrier or so. Anything less and you're going to see a wrong reading. Also make sure you peak the tune and load at...

Ok, I did the two year. Thanks everyone! Ill probably be here for another 20 years now