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I have clean very good working 28xxx serial number R-4C for sale. It has the noise blanker with stock filter. $400 plus shipping. Dan K9DTC

Permalink to this message thread: /g/DRAKE-RADIO/topic/93458618#msg67295 "Mark Davis via groups.io" <markad7ef@...> wrote: -- 73 -Jim NU0C

What has worked for me for years is to use an Ameritron/MFJ ICP240 or ICP120 to turn my amps on and off; the power switches in the amps are left on. ?However, in spite of the advertising, these are

All good. [email protected]> wrote:

Evan, Okay on the rain. Chuck

Rick, all A word of caution regarding the W8ZR SSR modification on the L-4B... the rectifier / filter circuit that author uses to energize the SSR when the L4B power switch is turned on is directly

Bob, The switch rebuild kits are indeed no longer available. The L-7 ON/OFF switch like the L-4B switch doesn't actually get "dirty".? The contacts? burn when opening and closing at the sine-wave

Lyndon; Going back to your original post: "I'm putting together a 6m tuner so I can get the TR-6 back on the air. I want to be able to bypass the tuner..." and your later feedback: "Sorry folks, I

There will be videos/pics online. ?Current estimate is for rain on Friday and Saturday; tradition has it that there will be at least one day of rain, ?hi hi. 73, Evan

I did look at the second section of the article, but I didn’t notice that the author was using a different (higher power) style of relay than the general-purpose relays identified in the first part.

On my Triplett 3444 tube tester, the wafers are numbered with 1 at the front. Two sided wafers are designated “1F and 1B” respectively, and so on. Gary W0DVN

No sir, will not be at Hamvention this year. Chuck

The Drake Technical Net met at 20:00z on Sunday, 5 May 2024 There were 28 stations checking in with us, today. The Drake radios used included the following: The net operated under poor conditions

It is a very simple circuit. You can break it down to a diode, a switch, and a relay. Note that the Stby/Oper switch is double pole, the front panel lamp is interdependently switched. 73 -Jim NU0C

The MN-75 schematic doesn't assign labels to any of the switches (or anything, for that matter). The MN-4C uses S3A/B/C to address the individual wafers on the bandswitch. The antenna switch is S4

Mark, Read the details on the page I referred to: This first section deals with inexpensive general purpose relays you can use for low to medium power through 220MHz, up to about 200w. The second

Coming ?to Hamvention?

Jerry; I don't have a MN-4C tuner myself, but I found some pictures of the BAND Switch. The sections shown on the schematic are actually two different wafers. I suspect having the sections on

Is there a standard for the lettering of switch wafers? In other words - is wafer "A" closest to the panel that the switch is fastened to? Or is it the furthest out? - Jerry, KF6VB

Yes Mike does not have the rebuild kits anymore. I was able to remove the switches and thoroughly cleaned them and checked connections, they now work fine. Still unable to key.? Stdby and Oper seem