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Installed my spare NOS relay in the L7.? Easier than I thought it would be.? The PTT connector checks out and I have both RCA plugs on my PS7 along with a isolated PTT from my 7610.? The all bus

To finally bring this back to a Drake discussion, I consulted the MN-4C. It uses a four position ceramic wafer switch. Case closed. --lyndon

Not sure who was the originator of the question, I just joined the group. But if the operator is looking for a mechanical switch for which to bypass an inline component such as an Antenna Tuner or

Robin; That's useful info, but I don't see any discussion of power-handling capabilities for the DIP/SMT (non-coaxial) relays. I don't believe they'd be suitable for handling 200W at 6M. Also, for the

Bob, Not sure if it is an early L7 ?with a non-polarized 2 pin PTT connector or an RCA connector; polarization of the 2 ?pin connector is important. ? Standby/transmit switch should be checked, on

After extensive troubleshooting and replacement of the tubes, now my L7 fails to key up. I have checked the keying circuit and all seems fine at this point. Could I have a bad relay in the L7??

Hi Garry, I am looking for an aluminum front panel i.e. the continuous casting part behind the fancy sub-panels. Cheers. Karl, DK7AL

Is anyone in need of a TR7 Front Subpanel? This is the panel that has all of the lettering. It is really easy to change. I have one that has perfect lettering, great color. There is a tiny nick just

My apologies: I didn't answer your question. That small plastic knob simply pulls off the shaft. Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana. Sent with [Proton

Yuichi, you should not need to remove the panel to fit an AM filter. There is a socket inside the TR-6 for an AM filter. 73, Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana.

Dear all, I wish to remove TR-6 panel for installing homemade AM crystal filter, but "Meter" knob is interfering to do so. I think TR-4 / TR-3 and perhaps T-4X are the same construction. Please give

Thanks, that's why I asked: Or would having the the transmitter pass across the tuner output be a horrible idea? Ken, N2VIP

https://www.w6pql.com/using_inexpensive_relays.htm wrote:

Ken; In position 2, the output side of the reactive components of the tuner remain connected between the RF output and ground. Depending on the design of the tuner, the settings of the tuner, and the

I would imagine you could Run RF out from TX to switch (common) Connect a jumper from Position 1 to Tuner input Connect a jumper from Posiition 2 a jumper on Tuner output where there is a T connector

Lyndon; It wasn't clear whether you wanted a solution you could implement inside the tuner, or with external components, and the dummy load connection is a new wrinkle I was thinking you would want

Hi Lyndon >>> I believe what you need is one of these integrated Dow-Key coax switching bypass relays. There are several of these in stock at the Restoration Center in Pahrump, Nevada, where I do

Plate current is a fixed meter shunt. What is adjustable is the grid current metering. And the high voltage meter, but you don't want to mess with that unless you have a real HV probe. It's not

Lyndon; I should have paid more attention to your original post. To be able to switch your tuner in and out with a single switching control (manual or relay), you need a DPDT coax switch... AKA a

I've gotta say, some of the over-engineering here is pretty spectacular :-) I'm going to go with a 3-position ceramic wafer (dummy load, direct, tuned). --lyndon