Re: TR7 Getting ready to sell. But have to deal with the dastardly DR7 board again. I thought.
Lately I've been using CRC that I can get at my local Ace Hardware stores. 73 -Jim NU0C "Bill via groups.io" <billnopic@...> wrote:
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Jim Shorney
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#75430
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Re: need to know the values of rfc-3 choke
Which type of rig: transmitter or transceiver? I probably have one. Steve Wedge, W1ES/4 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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#75429
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Re: need to know the values of rfc-3 choke
Re: need to know the values of rfc-3 choke? sorry about the typo that was RFC ¨C3
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Tim KD0KIO
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#75428
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need to know the values of rf-3 choke
good morning gentlemen my name is Tim and I own a Drake T4 XP transmitter. I am replacing the two 6JB6 tubes and the two 15 omes 1 W resistors. When I'm looking at my schematic there is a choke that I
By
Tim KD0KIO
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#75427
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Re: TR7 Getting ready to sell. But have to deal with the dastardly DR7 board again. I thought.
Jim, What is your recommendation for a " good non-contaminating spray"? Thanks Bill W4WCS
By
Bill
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#75426
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Re: TR7 Getting ready to sell. But have to deal with the dastardly DR7 board again. I thought.
Thanks Jerry, With my present state of dexterity and vision. Not sure if I may do more damage. Looking at the problem, I can't reach more than about 35% of the contacts if I'm lucky. Without doing a
By
Bill
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#75425
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Drake Technical Net - 7 January 2024
The Drake Technical Net met at 21:00z on Sunday, 7 January 2024 There were 40 stations checking in with us, today. The Drake radios used included the following: The net operated under very good
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William W9MXQ
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#75424
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Re: TR7 vco hi unlocked
Nice catch Giuliano! I wonder if you had a component with a bare lead too close to the back of a female connector somewhere. The male Molex pins are very long and can protrude from the rear of the
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Jim Shorney
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#75423
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Re: Drake SW4A AGC issues part three
Richard and the gang I remove (electrically) the old cap out of the circuit before tack soldering in a test capacitor. The test capacitors were quite a bit out of spec (I used a 47mf instead of the
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Mike Bryce
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#75422
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Re: TR7 vco hi unlocked
Can you explain "cartoon insulator" please? Thanks. Dave
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Dave Cutts <g4faw@...>
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#75421
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Re: Drake C4 Refurbishment - Power Master Part 3
I bought a set of boards from Mike last year as well I ordered and have all the parts to build it. But have been too busy last year hoping this nyear. Idoes use relays to do the switching. 73, Jim
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Jim Harris
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#75420
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Re: Vacuum Tubes(Valves)
*** I like this video better: https://www.youtube.com/watch?v=-UEfqAWb3fE It goes into some detail about the techniques and materials, almost enough so I could imagine doing it myself. - Jerry, KF6VB
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jerry-KF6VB
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#75419
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Re: Vacuum Tubes(Valves)
Last year I sold about 25 home made tubes of all types¡ Gary W0DVN
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Gary Follett
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#75418
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Vacuum Tubes(Valves)
Greetings in the New Year fellow Drake enthusiasts! All the conversation about Vacuum Tubes reminded me of a video I saw on Youtube back around 2007. It involved a French operator (Claude Paillard
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M. J. Synowiec
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#75417
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Re: TR7 Getting ready to sell. But have to deal with the dastardly DR7 board again. I thought.
*** Especially the current version of the DeOxit can, which comes with a BIG straw. I have been using the (expensive) needle tip bottle. Often, I use the needle tip to load a Q-tip, and then apply the
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jerry-KF6VB
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#75416
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Re: R-4B AGC Issues, Part Trois
And some of us ARE engineers and still appreciate the insight! 73, Peter VE7PS U of T '77 Geol. Eng. [email protected]> wrote:
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VE7PS
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#75415
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Re: Drake SW4A AGC issues part three
By tacking in the capacitors do you mean you just paralleled them with the old ones? If you did not disconnect the old caps their leakage (parallel) resistance would still be there. When substituting
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Richard Knoppow
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#75414
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Re: Drake SW4A AGC issues part three
Just a guess, Mike, but you may have put a good cap in parallel with a leaky cap and ended up with a good leaky cap! Bob K9JU
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Bob Loving
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#75413
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Re: R-4B AGC Issues, Part Trois
Hi Guys My two cents on the root cause is that maybe one of the capacitors in the old can was short circuited. Placing a functioning capacitor in parallel will still result in a short circuit. After
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Rob PA9Z
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#75412
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Re: R-4B AGC Issues, Part Trois
I¡¯ll lay claim to having been an engineering tech. I worked as a non-degreed engineer in several gigs. Design work was never my forte. Testing is where I did a lot of work and I really had a knack
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Steve Wedge, W1ES/4
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#75411
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