[Drake] Need Relay for T4X-C

[Garey Barrell]

Paul -

The "correct" replacement relay is the P&B (Tyco) R10-E1-Y4-V2.5k, same 
relay used in the TR-4C, which IS available from Mouser.  You need to 
add a 1.5k 1/2W resistor in series with the coil, otherwise a drop-in 
replacement. 

The 15k ohm coil relays were failure prone, primarily because of the 
very fine wire needed.  The bobbin would swell,  especially in humid 
conditions, stressing and breaking the wire.  This is why T-4XC's that 
have been stored in the garage for a while often have a bad relay!  The 
2.5k ohm coil of course uses considerably larger wire. 

73, Garey - K4OAH
Atlanta

Drake C-Line Service Manual
<http://www.k4oah.com> 



Paul Blumhardt wrote:

>The coil opened up on the relay in my T4X-C
>
>Manual says its a 15K ohm coil. 4PDT, solder/plug in.
>
>Measures about 5/8" wide, 1 1/8" long and is in a plastic case.
>
>No luck with Mouser. TR4C relay has 2.5k ohm coil, so using this with an
>outboard resistor would be last option. I'd prefer a direct replacement.
>
>Does anyone have a part number/manufacturer of a replacement
>
>OR does anyone have an extra that you can sell?
>
>Thanks
>Paul K5RT
>  
>