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$1500 is a bit much for me but thanks in any case. 73, Doug/WA1TUT -- Doug/WA1TUT

Thanks again Steve!

One can build a SPST NC reed switch with a small magnet attached to the body of the switch, adjacent to the contacts. With the correct amount of magnetism, the switch will be held closed. Apply an

The Atlas 350xl uses the same qsk architecture through the magnecraft's? fast switch relay. Giuliano, IV3DLW

Ken, The answer to your question is yes. ?Using the external Dow Key auxiliary switch in the open position will provide sufficient isolation to all of the active devices of the receiver front end.

Jerry, this makes sense for QSK except for the part about the RX being biased off during transmit. Surely there's another reed or transistor switch doing the biasing, otherwise how would QSK work?

Hello Group, I have two Drake R-4Bs here. One of them got a problem, but this is not the topic here. When I compare the bottom views of these two receivers, one of them has a small additional board,

If your Dow-Key relay is acting properly and disconnecting the Drake 2B receiver when transmitting, you will be fine.? You can confirm the switching of the relay contacts with an ohmmeter or

The covers for the B Line and later have a special type of paint job that takes some work to dupicate convincingly. There are some powder-coating shops that will give you a decent result. That costs

Also the band switch is loose

I have a radio with an "interesting" T/R system. My Signal/One. One of the big features of the day was QSK for CW. They did it with an SPST reed relay. SPST? - I hear you ask... All the relay does is

Ok,? Here goes.? I had a problem of poor audio, a trip back to the manual for deep read and fixed that! Now my T-4XB audio and sig are good while on Separate and xmtr.? But when using transceive

Ken, I'm not sure how the 2B mutes or what contacts the Dow Key relay has, but you might be interested in how I have run break-in CW with numerous vintage receivers since the fifties. I use a SPDT

I'm looking for a TR-4 sideband filter and selector switch.? There's a type that was supplied in the mid-production TR-4s that does not protrude through the chassis.? Some are blue some are

You can buy a set of fiber washers on Amazon. All sizes and they come in handy. I put a touch of cement down to hold those washers in place during assembly. I have the little red indicator light pins

I wanted to get the excess heat and unnecessary power draw on the transformer out of my L7 power supply so I decided to remove the wasteful ALC voltage divider network as I don’t use the ALC

Hello: Can anyone tell me the best way to touch up a Drake T4XB metal top cover? I'm wondering how hard it is to get a new cover instead... Thanks Scott N1IA

I used a 2B as a novice, along with a Eico 720. My Dow key relay had external contacts that handled muting the 2B Easy peasy! 73 Ronnie

Ken, Like others have said, just ground the 2B Antenna input to chassis ground with a DPDT or set of relay contacts during transmit and the 2B will also serve as a great CW sidetone monitor while your

Ken, The Dow-Key relay will mute the 2B receiver and disconnect the "ANT" from the receiver to the transmitter in transmit. You need to ensure the Dow-Key relay actually switches the ANT SO-239