[Milsurplus] MBF Navy VHF set breakthrough

[Rob Flory]

Determined to get this thing off my bench, I decided to take another look
today.  I have been focused on getting the driver circuits tuned up, as I
was not getting rated transmitter power output.   Originally designed for
60-80Mc, the RF inductors needed remaking with additional L to get me onto
50Mc.  I was stuck thinking that poor Q was dragging me down.   I took a
look at the screen voltage on the 28D7 RF PA tube and read 3 Volts.  I
couldn't find any tube specs in any of my reference books, but didn't need
them to know that was dead low.  The sangamo bypass cap read 350 ohms.  I
wonder if this type is like the micamolds, a paper cap in mica cap clothing.

Bang, now I'm getting a couple watts output, good to go.

This set is to talk to the TBS at BB-59.

RF