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G0ANS > AM 13.06.03 23:01l 41 Lines 1441 Bytes #999 (0) @ WW
BID : 865522G0ANS
Read: GUEST DB0FHN
Subj: Re: G0ANS CB LEENYAR (;->)
Path: DB0FHN<DB0RGB<OK0PPL<RZ6HXA<SP7MGD<GB7YKS<GB7MAX<GB7COV<GB7BED<GB7KHW<
GB7WSX
Sent: 030613/2136Z @:GB7WSX.#32.GBR.EU #:28170 [Crawley] FBB $:865522G0ANS
From: G0ANS@GB7WSX.#32.GBR.EU
To : AM@WW
Hi Warren.
> Those 4-400As can be used grounded grid, but there's a TRICK to it. I
> believe it involves a 10 resistor from the screen grid to the ground
> point (bypassed of course) but it's been so darn long I forgot about it.
> I know an expert on such things I can ask if you're really interested.
Thanks for the offer Warren but somewhere hidden in the shack I
have a schematic, just finding it..
> OF COURSE those 3-500Zs glow, if they didn't surely something's wrong.
> (;->)
And could be expensive. Still better a Tube that glows then a FET.
Oh wrong again FETs are fast fuses :-))
> That's exactly what happens when you switch to AM and at least with my
> 706-Mk2G the DSB overpowers the carrier so I have to switch the
> compressor off. It tends to overmodulate with it on but what can you
> expect from a transmitter designed for SSB and optimised for it?
My 706-Mk2G does the same,
> BTW, since you like the way those thoriated tungsten filaments light up
> the room, take a peek at the December 1999 QST and you'll see the lighted
> 811A atop K2PG's Christmas tree, my very own creation. Must give credit
> where credit is due, photography by Mathew Ryan, son of W2RXR.
I shall have to find a copy and take a look.
I can remember Tubes before FETs were readily available.
The shack was the only room with central heating winter or summer :-))
73 John.
.
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