Oops. I forgot we are talking about the T-4X (even though it is in the title).
Same concept, but tighter space to work in.
73,
Bob WW3QB
________________________________
Bob -
That is an entirely different board, for the TR-4. They are not
interchangeable with the T-4X.
--
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>
Robert Ladden wrote:
> I see that John Kriner still has some.
> http://www.ebay.com/itm/Drake-TR-4-replacement-relay-pcb-instructions-/390339524281
>
> ----------------------------------------------------------------------------------------------------
> *
> *
> Garey
> Could you guide me to the layout for the relay pc board you mentioned.
> thanks
> dale wt4t
>
>
> -----Original Message-----
> From: Robert Ladden <[email protected]>
> To: drakelist <[email protected]>
> Sent: Mon, Dec 26, 2011 11:47 am
> Subject: Re: [Drakelist] T-4X relay
>
> I installed the Drake board in the TR-3. I think you can make your own easily
> using a breadboard and a relay socket.
>
> 73,
> Bob WW3QB
>
> ----------------------------------------------------------------------------------------------------
> *
> *
> Dale -
>
> The original relay runs from the +250 VDC bus through the 6EV7 to ground.
> The relay is a P&B R10-Y4-E3-2.5k and is available from Mouser and Digikey
> and ... This is the same relay that is used in the later T-4X(any) and
> TR-4XC transmitters.
>
> Drake used to offer a small PC board with a relay socket and some pins to
> spread out the connections. The Drake board is no longer available, but I do
> have an artwork for it. A list member built up a small adapter out of
> aluminum (could be PC board material) that worked out well. He wired
> directly to the relay socket contacts, which are very tight, and don't forget
> that lovely Drake wire insulation that melts at approximately 80 degrees!!.
> Apparently his hands are much steadier than mine! :-) He is planning to
> document 'soon'.
>
> --
> 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 <http://www.k4oah.com>>
>
>
> [email protected] <mailto:[email protected]> wrote:
> > Just bought the T-4x and have not looked at it yet. The seller mentioned
> > that he pulled the open relay and replaced it with a enclosed relay he had
> > and also said the PTT circuit was now 12 vdc. Looking at the schematic,
> > looks like the original was 6 volt on the PTT. I will likely change things
> > back to where they were,is the original relay aviable from a vendor? anyone
> > have a #? is there a covered reley that would work or ever a small pc
> > board that would allow a plug in?
> > thanks
> > dale wt4t
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