Re: Help ID'ing Some Misc Flea Market Items
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
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VE7PS
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#85092
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Re: Supercapacitors - Possible anti-surge device to protect filaments/ heaters
"I decided that it probably wasn't a good idea to keep a bomb in the shack." Good decision! John
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John K5MO
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#85091
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Re: Compatability
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
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Mike W5RKL
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#85090
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Re: Supercapacitors - Possible anti-surge device to protect filaments/ heaters
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,
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Steve KL7JT
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#85089
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Re: Compatability
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
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Ralph AD9FM
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#85088
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Re: Compatability
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
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Mike W5RKL
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#85087
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Re: Compatability
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
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Mike W5RKL
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#85086
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Compatability
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>
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Ralph AD9FM
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#85085
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Re: Supercapacitors - Possible anti-surge device to protect filaments/ heaters
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
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Jim Shorney
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#85084
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Re: Supercapacitors - Possible anti-surge device to protect filaments/ heaters
*** Wow, those nice die-cast boxes are expensive. I always grab'em when I find them at the flea market. - Jerry, KF6VB
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jerry-KF6VB
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#85083
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Re: Supercapacitors - Possible anti-surge device to protect filaments/ heaters
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
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Jahman N5ASE
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#85082
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Re: Help ID'ing Some Misc Flea Market Items
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
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Steve Wedge, W1ES/4
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#85081
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Re: Another TR-3 s/n 1329
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
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Steve Wedge, W1ES/4
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#85080
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Re: Help ID'ing Some Misc Flea Market Items
I think that first one is the backlight lamp holder for a 4-line receiver/transmitter/transceiver(?). Barry - N4BUQ
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n4buq
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#85079
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Help ID'ing Some Misc Flea Market Items
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. --
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Craig W8CS
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#85078
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Re: Another TR-3 s/n 1329
" 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
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John K5MO
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#85077
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Re: Another TR-3 s/n 1329
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
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Steve Wedge, W1ES/4
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#85076
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Re: TR-4 AM Mode
Randal, This is exactly what I was trying to do. I have a key in the key receptacle, no mic in the mic receptacle, and when I switch to X-AM, the audio goes dead. To me, that doesn't seem correct and,
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n4buq
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#85075
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Re: TR-4 AM Mode
Mike, Thanks for the explanations below. In my case, I have a key inserted in key jack so switching to X-AM would only transmit with the key down (I don't have a microphone inserted - yet). With it
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n4buq
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#85074
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Re: TR-4 AM Mode
Having just listened a bit to some AM on my TR-4, ?and having read Mike's comment, I'll point out that the manual indicates that you can receive AM in the X-AM function switch position. ? I have a
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Randall K8BUX
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#85073
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