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They need a bit of air space round them just like any power resistor. See /g/DRAKE-RADIO/files/TR-7/PS7-Inrush.pdf for examples. "John K5MO via groups.io"

Do you do just mount them under the chassis away from things like electrolytics, etc? I know they are hot when they're running. John K5MO [email protected]> wrote:

They do wonders for the PS7 THUMP. I find them in scrap PC power supplies. "Steve KL7JT via groups.io" <radiorobots@...> wrote: -- 73 -Jim NU0C

The 2nd pic was an optional rear panel for the TR-4 (and possibly the TR-6?) that facilitated hooking up the TC-6 and/or TC-2 transverters. I have a TR-4 with one on it. The surge protector is what it

"I decided that it probably wasn't a good idea to keep a bomb in the shack." Good decision! John

Ralph, The R4B has MUTE, ANT and 4 ohm SPKR connections on theR4B's rear chassis as shown in the picture below. Simply substitute the R4B for the "External receiver" shown on page 2-7 Figure 2-9 in

Agree with the NTC current limiter comments of '0C and 'RF. You can measure the actual power into the AC-4 with a strangely named "Kill-a-Watt" AC power meter; they work well. TX will be more than RX,

Thanks Mike I must have missed that in the manual. Sent from my T-Mobile 5G Device Get Outlook for Android<https://aka.ms/AAb9ysg> ________________________________ Sent: Friday, May 23, 2025 10:28:09

By the way Ralph, the R4B connections to the TR4C I mentioned are covered in the TR4C manual. 73 Mike W5RKL https://www.w5rkl.com

Ralph, If you are asking if an R4B can be used as a separate receiver with the TR4C then the answer is yes. Connect the R4B Antenna and ground to the TR4C rear "External Receiver Antenna" socket and

Hello fellow Drake owners. Can the TR4C be paired with any Drake receiver? In my case in particular the R4B? Sent from my T-Mobile 5G Device Get Outlook for Android<https://aka.ms/AAb9ysg>

They are simple and reliable. Pretty much every SMPS made has at least one. Your PC, your TV, etc. "Jim VE7RF via groups.io" <jim.thom@...> wrote: -- 73 -Jim NU0C

*** Wow, those nice die-cast boxes are expensive. I always grab'em when I find them at the flea market. - Jerry, KF6VB

Or just bolt a nice aluminum box from Bud Industries onto the L-4B/L-7 PSU front panel (bolt-on vertical or horizontal) and use it to trick-out your PSU: [image: image.png] *AMAZON - BUD Industries

Barry's correct on the first one. The second one looks like a rear upper panel for a TR-4C Steve Wedge, W1ES Time flies like an arrow. Fruit flies like a banana. Sent with [Proton

I have found a superior applicator for contact and switch cleaning: eye makeup foam applicators. They also work fine for cleaning other small mechanical items. They can be occasionally pressed into a

I think that first one is the backlight lamp holder for a 4-line receiver/transmitter/transceiver(?). Barry - N4BUQ

Some things followed me home this weekend. In addition to my TR7 parts, I got several "bonus" items. Let me know if you recognize any of these pieces, or better yet let me know if you need them. --

" I am done for the night and will not press my luck. I have done nothing else yet, no tubes pulled / checked, no switch contacts or tube sockets sprayed with Deoxit D5." Congrats Dave, and you're

Dave, when you get this running better, please let me know how it’s working in 10 in tx/rx. Right now, I’m working on a TR-3 and a very early TR-4 and both of them are not really all that good on