29 Aug
2008
29 Aug
'08
8:59 p.m.
On 29 Aug 2008 at 22:04, Pete Turnbull wrote:
Sometimes even an asset. I recall a DIY project in
Practical Television
in the UK, for a Band III (about 190-200MHz) VHF TV preamp, built in the
proverbial tobacco tin with a VHF pentode (IIRC), and using a length of
coax for its tuned circuit.
Before that, you'd find acorn tubes using copper pipe for a tuned
circuit at 112 MHz. Parallel tuned lines made of brass or copper rod
weren't unusual back then for the 2.5 meter band and down.
Cheers,
Chuck