I just came in from the unheated garage where I've been working on a vfo for
a Globe Chief 90 and I caught your email. The vfo is a pto from a T195,
with a 6BA6 oscillator on 160 and a 6BA6 buffer stage. I added a 12AU7 that
provides two triodes to double to 80 and 40, so I get both 160 and 40 meter
output to drive the Chief. Some of us still do a little work in tube
I also have a DX-60 and HR-10 vfo that I'm going to add to my boatanchor
collection out there as soon as I get the Chief and its vfo working together
OK. They still do a good job. And my QSK system has solved the "manual
switching" problems. I just hit the key to go on cw or throw one "transmit"
switch to go on AM phone.
You can still find DX-60's at flea markets and on eBay. You should revisit
your misspent youth.
----- Original Message -----
From: "ron" <firstname.lastname@example.org>
Sent: Tuesday, November 16, 2004 10:36 AM
Subject: RE: [TenTec] QSK
> Reminds me of the tube days when I had the Heath dx 60 and matching vfo
> rx. Man all the steps to go thru to tune and then manual switching between
> tx/rx! Sri I sold it back then.....I got a TT Century 21 with the sale
> money. Still have the TT rig. :)
> I'm probably hopelessly old fashioned, I still use my "boatanchors" on the
> air regularly like my DX-100, Valiant, Globe King, 75A4, BC-348 and
> My QSK system uses time-sequenced mercury-wetted relays to 1) transfer the
> antenna from the receiver to the transmitter and cut the receiver gain
> to a level where I can monitor the actual transmitted signal on the
> receiver, 2) turn on the transmitter oscillator, and 3) turn on the
> transmitter final amplifier and the Heath SB-200 if I'm using it. When I
> let up the key, the relays release in the opposite sequence. Mercury
> relays switch in under a millisecond, so it works darned well.
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