Re: DR7 fitting partial success.
Thanks Steve. She seems fine just doing a tidy up now before I refit the case. Kind Regards Mike G3ZCC
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Mike Davidsohn G3ZCC
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#56341
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Re: DR7 fitting partial success.
So glad you had a good outcome, Mike! You¡¯ve been at it for quite a while and deserve this. 73, Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana. Sent from ProtonMail Mobile
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Steve Wedge, W1ES/4
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#56340
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Re: DR7 fitting partial success.
Hi Everyone Success, I now have a digital display that is meant for the TR7. Thank you to all those who offered assistance. This project has been a very steep learning curve for my Tube specialist
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Mike Davidsohn G3ZCC
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#56339
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Re: DR7 fitting partial success.
Hi Everyone I think I may have found the problem with the A segment. First of all as Jim said it is a DF4NW as that is imprinted on the mounting board for the LED's with a 2006 date on it. I did some
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Mike Davidsohn G3ZCC
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#56338
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Re: DR7 fitting partial success.
Good Morning Jim Sorry my brain was frazzled hi What I did do before I went to bed was to scope the three wires and all of them have signals, which look pretty much the same. So today as per your
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Mike Davidsohn G3ZCC
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#56337
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Re: DR7 fitting partial success.
As I mentioned in a previous post they are common anode. The pinout on these is pretty standard so you should be able to google up a data sheet with a digram and check the individual segments with an
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Jim Shorney
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#56336
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Re: DR7 fitting partial success.
Hi Roger Just checked p21 to the centre wire and there is continuity. As it is affecting the Mhz section looks like I may still have a joint of track problem. Excuse my ignorance but are these common
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Mike Davidsohn G3ZCC
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#56335
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Re: DR7 fitting partial success.
Hi Roger Just seen your reply. Looks like the problem now is with segment a the top one. All the others are working. Will check that centre wire tomorrow. Kind Regards Mike G3ZCC
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Mike Davidsohn G3ZCC
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#56334
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Re: DR7 fitting partial success.
Hi everyone Well after a day checking those three pins, fitting? 5mm blue LED's to the PTO and meter, fitting it all back together still a problem. looks like segment a if I read the schematic
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Mike Davidsohn G3ZCC
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#56333
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Re: 2B-Q connector
Hi all. Thanks for the fine info and offers.? The original plan was to use an old Heathkit unit I had? but? I've managed to obtain a 2-BQ with one fitted. So the connector is no longer required.
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Gary Moles <morgannz@...>
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#56332
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Re: L75 Amp Main Power Switch Availability
##? ?You won't see any amps other than drake, using a .82 ohm? @? 2 watt? resistor.....for a... 'hv? fuse'.? ?New, correctly sized? HV? fuses are cheap, and meet? ?UL /? CSA?
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Jim VE7RF
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#56331
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Re: 2B Second Mixer Bias Issue
John, Thank you for the follow-up report. 73, Michael Smith, N4KZO
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Michael Smith
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#56330
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Re: DR7 fitting partial success.
Sounds like a good idea. Please post a pic sometime if you get a chance. 73 -Jim NU0C "Gary Follett" <xntrick1948@...> wrote:
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Jim Shorney
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#56329
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Re: DR7 fitting partial success.
That¡¯s the term I was looking for, fish paper. Drake may not have widely implemented that ECO but I have had several TR7¡¯s that did have it and I installed it on every one that came through here.
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Gary Follett
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#56328
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Re: 2B Second Mixer Bias Issue
Well, the mystery is solved. ?Once I pumped a modulated signal in at the ant term and heard the tone in the speaker, I knew this stage was working. I suspected the meter was loading the osc when
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John Limbach, K8NN
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#56327
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Re: DR7 fitting partial success.
Hi Mike, The loose left wire is for segment F. The center wire is for segment A. The right wire is for segment B. Suggest re-soldering all three wires. You can use an ohmmeter to check for continuity
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Roger VE7LB
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#56326
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Edited
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Re: MN2000
I¡¯m currently using a Nye Viking MB-V-A. Built like a tank and available for around $300. I¡¯ve been using it to drive balanced antennas with the L7 and it takes everything I can give it. Steve
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Steve Wedge, W1ES/4
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#56325
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Re: MN2000
I had one of these years ago. I remember on 160 that it wouldn¡¯t do legal limit ¡ª about 800W before it arced. Good tuner, though. Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a
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Steve Wedge, W1ES/4
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#56324
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Re: DR7 fitting partial success.
Hi Fred I was going to buy a TR7 back in the day, got warned off, spent more money and bought a Triumph Stag. After three engines I sold it and bought a Lotus Sunbeam. Best car I ever had, Kind
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Mike Davidsohn G3ZCC
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#56323
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Re: DR7 fitting partial success.
Hi Roger Thanks for that, I just checked and looking at the board from the front, there is a bad solder joint on the left wire link of the three. Just resoldered it, it came off in my hand. Fitting
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Mike Davidsohn G3ZCC
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#56322
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