Re: DR7 fitting partial success.
Hi Roger I have the transmitter of the pair, an early "duck egg" 2000, 2000 G Line, 2000A,B, E. and a KW Atlanta Plus a KW 600 and KW 1000 Linear. All working, if you need any schematics or help with
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Mike Davidsohn G3ZCC
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#56468
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Re: Need Crystal freq. for 28.5 mhz in TR4C
Thanks for the reply.? Once I finish getting here working I will contact you regarding some crysta;s Greg
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Greg Anders
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#56467
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Re: Wanted - Drake TR-4C S-meter
Thanks Steve, That's good to know. 73, Doug
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Doug
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#56466
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Re: TR7 insulating paper
That's odd, I had no clearance problems at all with the German board. 73 -Jim NU0C "Gary Woods" <garygarlic@...> wrote:
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Jim Shorney
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#56465
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Re: TR7 insulating paper
The fish paper goes across the top of the PTO lamp metal and prevents the DR7 display solder pads from touching that grounded surface. Gary W0DVN
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Gary Follett
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#56464
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TR7 insulating paper
I've finally gotten up the time/courage to get back into my TR7; have fixed several bad counters on the DR-7 board, and figured out that clearances for the replacement German made display board are so
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Gary Woods
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#56463
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Re: TR-4C audio hum
Jim, Thank you, I had read that part in the manual after I posted my question.? I'll see what I can find out.? Been a ham since 1986, but just now starting to learn how things work so it may take me
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Cowan Bowman
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#56462
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Re: TR-4C audio hum
No but after 60 yrs of troubleshooting and restoration I have figured out 45 year old caps will do one thing for sure. Be leaking or soon will be.except for oil filled .73.Tony wa4jqs Sent via the
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Tony Deprato <tony.deprato@...>
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#56461
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Re: 3 files uploaded
#file-notice
What new meter of any quality is cheap these days? I managed to find new meters on the Bay of the same style for my PS-2000 a while back and just made new scales for them using the "METER" software.?
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VE7PS
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#56460
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Re: Hamfest finds
Your TR-4CW is holding its value.The American Dollar on the other hand, has not.Jim - WB6TNF? On Sun, Mar 28, 2021 at 12:00 PM, gary schnakenberg<wb2jax@...> wrote: So my TR-4CW is holding its?
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WB6TNF
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#56459
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Re: Hamfest finds
So my TR-4CW is holding its? value.
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gary schnakenberg
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#56458
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Re: TR-4C audio hum
This could also be a bad tube in that chain. I've heard of filaments touching the cathode that can cause this. Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana. Sent with
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Steve Wedge, W1ES/4
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#56457
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Re: 3 files uploaded
#file-notice
You mean the meters? I think so but they are not cheap. Although you can often find used ones that are close enough that they can be made to work on eBay. I accidentally found a spare plate current
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Jim Shorney
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#56456
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Re: TR-4C audio hum
Better to diagnose the problem first. You don't learn anything by shotgunning caps. :) 73 -Jim NU0C "Tony Deprato" <tony.deprato@...> wrote:
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Jim Shorney
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#56455
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Re: 3 files uploaded
#file-notice
Excellent! Jim - these are still available.. correct? PS
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VE7PS
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#56454
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Re: TR-4C audio hum
Replace the caps in the power supply and the can in the transmitter. Sent via the Samsung GALAXY S? 5, an AT&T 4G LTE smartphone
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Tony Deprato <tony.deprato@...>
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#56453
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Re: TR-4C audio hum
There's your clue. 80 and 20 do not use heterodyne premix crystals. Look around the pre mix / het osc V1 and the crystals. Check grounds, look for excessive ripple on the B+. 73 -Jim NU0C "Cowan
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Jim Shorney
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#56452
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TR-4C audio hum
Hello all. The rig has an audio hum that is heard on the speaker when switching to any band except 80 and 20 meters.? When 80 or 20 is selected the hum is not present.? I still can hear
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Cowan Bowman
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#56451
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Re: Meter hardware for MN-7?
MS2T for 4-line, MS3T for 7-line. 73 -Jim NU0C "VE7PS" <ve7ps@...> wrote:
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Jim Shorney
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#56450
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Re: Meter hardware for MN-7?
Jim - Yeah, I knew you'd offer a spec sheet!? I couldn't remember which meter it was they used....tough to look up when you don't know what it is. *But*...I think these were the meters used on the
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VE7PS
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#56449
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