Possibly. Dale didn't mention whether the VOX worked or not. It wouldn't be that difficult to put
a fet (2N7000?) in place of the last 6EV7 section to retain VOX.
If the VOX (Semi-Breakin) doesn't work then the 'dit chop' doesn't matter! Of course the
transmitter is much less pleasant to operate, at least to me. :-)
--
73, Garey - K4OAH
St Charles, IL
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
John Brown wrote:
I guess there will not be any VOX capability if it is hard wired to the PTT.
JB
*From:*[email protected] [mailto:[email protected]] *On Behalf Of
*[email protected]
*Sent:* Wednesday, 28 December 2011 12:15 PM
*To:* [email protected]
*Subject:* [Drakelist] strange relay setup for T4X
Put the T4X on the bench today, noticed the relay had been changed out. I found a sealed relay in
place of the open frame relay. The relay was for 12 vdc.. they powered the relay via a small
rectifier and a small filter network,taken from the 12 volt ac feed to the rig from the AC-4.
The Ptt circuit is now 12 vdc at the mic jack. I tried to follow what was changed in the PTT
wiring really hard to follow as they wove the new wire into the old harness. I set the rig up with
the ac-4, and checked it out. Everything seems to work as it should, T4X had no trouble tuning to
full output.
I guess the question is , this mod seems to work fine ,as its done ,is there any thing I
should be concerned about using the mod , as to the way the T4X was originally set up? any one see
any pitfalls ?
thanks
dale wt4t
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