Transceiver Finals in Ham Radio

And what about the high SWR? Is the built-in protection in modern transceivers capable of protecting the finals? For example, when the cable breaks or the carrier transmission is switched on without an antenna.

interesting video

Great presentation! Thank you or your prep work; it made the presentation much more undestandable and interesting.😁 KI7RJS

So what do the food-grade pipe fittings and air lines and fittings have to do with a final amplifier? and I could go on! It sounds like you are making a video on something you barely know anything about.

A c1977 final is used as a driver in a ft 757gx2 to drive the four amplifier transistors in the pa unit⚡

C1977s were Toshiba careful thiers counterfeits i know for a fact they are from China

Very interesting

Good stuff TSA! 👍📻⚡️ Thanks!

SMOKIN… THATS MY FINAL ANSWER

Good info!

How It’s Made ham radio style. That was great Ape!

Great video

It's OK to call it a pill

We have radio on chip transcievers that take all kinds of abuse. We had a great military grade stuff in the Navy that could take all kinds of megs of reverse EMI and survive. Even some of those cb amps will take that abuse. I maintain the problem is crappy fake Chinese finals. Toshiba can take a likkin and keep on Tikkin UNLIKE SOME OTHERS. lol

Good production quality on this one Mr Ape!

With that being said, perhaps then the resale pitch for a 10+ year old radio “works as it should” would be rejected. This information proves that age, use, and storage (as well as many other parameters)do play a major role in the degradation of components; therefore, it is not by chance that a used radio of a substantial age, use, and unfavorable storage can fail. Which leads us to conclude that folks should consider buyer beware in their purchase of said “used” radio.

Oh, I almost forgot, great informative vid!

Not all tubes are not created egual

When in the usaf, we told the newbies that if they transmitted and the output wasn’t connected to the antenna or dummy load, it would sterilize them. At that time their was no finals protection. Keying a mic without a load would blow the finals. Telling them about sterilization, which was bull, we had very few blown finals

One day I’ll get around to replacing the MOSFETS in my extra Yaesu mobile. I’ve been saying that for several years.

Hello, i purchased an old UHF all mode transceiver.
I noticed sometimes the speaker squeaks and hisses with sql on and off. Does that mean the output transistor is on the way out?
Thanks

Interesting, but how would a rookie KNOW if there was a problem with his finals? What problems does the radio exhibit?