Re: TR-3
That's normal, Tony. The indicator lights are hardware-controlled, so no need to worry about pesky software :-) 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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#84668
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TR-3
Hello everyone, after some late evenings after work, I finally have my TR-3 up and running. Did make a few contacts on 80m using the EV 638 microphone with good audio reports. As being new to the TR-3
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Tony N5DIM
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#84667
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Re: SPR-4 AF control
Do you have the Old (Original Control) AF/RF Control with Switch ?? I can be restored OR used as pattern to reproduce with OEM Parts. The Drake R-4C receiver used a Concentric AF/RF Control of
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Greg W9GB
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#84665
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Edited
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Re: SPR-4 AF control
Looking for a dual AF/RF pot with AC switch. Can anyone help? Peter OZ8CTH
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Peter Ravn
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#84664
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Re: Drake TR3 Smoked Resistor
I found that resistor, R111, and it's listed on the schematic connected to pin 11 of the power connector and to the positive terminal of C145B, one of the 3 capacitors in the capacitor can. I've
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Mike W5RKL
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#84663
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Re: Drake K4OAH manuals
Check your spam folder. It could also be that Carol is away temporarily. Steve Wedge, W1ES Time flies like an arrow. Fruit flies like a banana. Sent from [Proton Mail](https://proton.me/mail/home) for
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Steve Wedge, W1ES/4
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#84662
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Re: Drake K4OAH manuals
I bought the C-line files a month ago and they came within 2 hours. -- Craig/W8CS Greenville, SC
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Craig W8CS
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#84661
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Re: Drake K4OAH manuals
As far as I know, still selling. I picked up the files for my C line not long ago. What email address did you use? Sent from [Proton Mail](https://proton.me/mail/home) for iOS
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KB9VY
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#84660
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Drake K4OAH manuals
Does anyone know if Carol (K4OAH's wife) of Drake Service Supplement CDs is still selling the pdf or CD service supplements of Drake gear? I've purchased pdf files recently for my Drake 2B receiver.
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Mike W5RKL
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#84659
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Re: items listed previously for sale
The Hastings hotsticks, Jackite windsock pole, and isolation transformer have been spoken for. ?Still have the Heath SB-200 and some of the other items in the QTH ad. 73, Evan, K9SQG
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Evan
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#84658
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Re: Drake TR3 Smoked Resistor
Mike,In my TR-3 that is a 3.3K ohm resistor that bridges across the two PCBs.? I've had this same resistor meltdown on a TR4 and the culprit was one of the capacitors in the capacitor can.? Start by
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Barry KJ5GQM
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#84657
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Re: Possible Source of resstor overheating
Sent to wrong email address. Anyway, I've progressed into determining the overheated resistor is R111. 73 Mike W5RKL https://www.w5rkl.com
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Mike W5RKL
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#84656
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Re: Possible Source of resstor overheating
Morning Bill, I did a few more resistance measurements this morning. After earlier measuring continuity from both sides of the resistor, one lead of the resistor to pin 11 on the rear power connector
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Mike W5RKL
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#84655
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Re: Resistor R111 and C145B
Yep. I was only looking at the photo whilst I did my morning walk. I¡¯ve smoked caps that way, too :-) Steve Wedge, W1ES Time flies like an arrow. Fruit flies like a banana. Sent from [Proton
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Steve Wedge, W1ES/4
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#84654
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Re: Drake TR3 Smoked Resistor
Mike, I¡¯d look around that area for a shorted capacitor. I had some smoke a few years ago that was caused by a shorted SM cap. It should be fairly easy to find. Steve Wedge, W1ES Time flies like an
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Steve Wedge, W1ES/4
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#84653
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SPR-4 AF control
It is a fact that on the TR7 a minimum of audio is heard when the AF control is turned fully down. On my SPR-4 the minimum level of audio is more than just acceptable, so I wonder if there is a remedy
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Peter Ravn
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#84652
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Resistor R111 and C145B
I've done some additional wire tracing and I believe I may have found the overheated resistor on the TR3 schematic. From my wire tracing in the TR3, Pin 11 on the rear power connector is the +250VDC
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Mike W5RKL
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#84651
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Drake FF-1
I've seen this in the TR-4 manual but I don't think I've ever seen one: https://www.ebay.com/itm/314218762222 Thanks, Barry - N4BUQ
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n4buq
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#84650
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Re: R7 Multi-Vibrator Harmonics
OK... thanks for the info. I haven't found that information yet. I'll try again to get the power supply board out. I haven't had much luck pulling it out. I know you pull it straight up but it won't
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Daniel W3DF
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#84649
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Re: TR-3 No Transmit
Hi everyone. I am reporting to you because you offered such good advice. I have found the problem and fixed it but I am embarrassed to disclose that it was the relay. I had cleaned it thoroughly (I
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Jack NP2OR
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#84648
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