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Jim: You won't find that low pass filter board in an "Export" (like Canada) model. It was installed in the US models to inhibit 10m operation in a fruitless attempt by the FCC to stop CB-ers from

What was it used for...to inhibit? amplifying > 23 mhz ??

Probably thousands of hams have used this mic with this transceiver.? The other popular mic used is/was the Shure 444! Lee, w0vt

Arnie, The front end alignment portion would apply to any of the R-4 line. Rob, NC0B

I am restoring a TR-3 and have already restored the AC-3 and purchased a nice MS-4 - I also purchased a D-104 microphone at a local hamfest recently and would like to use it with the TR-3 - has anyone

Arnie, I have used this method for quite some time, with all lines, and it is definitely LOT less hassle than swamping the premixer. The tuned band circuits are pretty much identical across the

The ones at AES look identical to the ones I have seen in some of my Collins knobs. It may be time to experiment and see if they'd work with the Drake knobs that have no setscrew. Many times, those

Rob: Would the procedures set forth in that document also be applicable to a R4b / T4xc combo? Tnc es 73 de Arnie W8DU

Man, that's an obscure niche product line. Great find! John [email protected]> wrote:

KNOB SPRINGS https://www.tubesandmore.com/products/knob-springs-half-moon-d-shafts LECTRA Fasteners (Arvada, CO) Manufacturer of D, D with barbs and double-D inserts used with control knobs

Jim and Stan, Thank you for the puller information. Chuck

Hi Ralph, This isn’t two rigs, but one receiver and one transmitter that can be operated as separates or transceive off of either VFO. With this much gain discrepancy between 80m and 15 meters there

Yeah, The spacing on the Drake extractor seem to be a bit short.? Seems like it was designed to lift one end of the board, then finish extracting the board with the hole on the other end of the

I like PA0CMU's copy better. Easier on the fingers. :) Of course a classic PC slot cover works best for the DR7. 73 -Jim NU0C "Stan Gammons via groups.io" <buttercup11421@...>

Oops. Missed one. RIT centering also requires the Jumper Board if you have a very early Parent Board. Later boards have a bottom access hole in the Parent. "Jim Shorney via groups.io"

Here's a pic of the board extractor I have.? Seems like I got it with the extender board kit?? Or I got it when I ordered the service manual.? Too much water under the bridge. I'm not sure. 73 Stan

The only board you need for alignment is the Jumper Board for VCO and Translator alignment. In my experience the VCO and Translator rarely need alignment. They pretty much work or they don't. IIRC the

You can find instructions for making your own copy of the Drake board extractor near the bottom of this page: https://pa0cmu.nl/drake.html 73 -Jim NU0C "aa5wg via groups.io"

Whoops, my message was lost… NO, I haven’t done the 6146 mod and don’t plan to unless I blew my 6JB6s and I couldn’t find any more. Seeing as how I have NEVER LOST ANY final since 1965, I am

On Mar 27, 2023, at 5:03 PM, W6MQI via groups.io <w6mqi@...> wrote: ?Are you thinking of or have done the 6146 mod? Never really heard of anyone doing this except K5DKZ Dave