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I have a decent-condition, working properly AC-4 available that is excess to my needs. This is a mid-production (no AC voltage switch), NON-rebuilt supply. Unloaded current draw is < 500 ma. This

Robin K4IDC <RobinK4IDC@...> added the photo album TR-7 Station Liquidation N4TK ( /g/DRAKE-RADIO/album?id=293716 ) : I'm helping my friend Butch Smith N4TK liquidate his TR-7

I have a fair copy of the schematic, but I am OCD, and want a original copy of the full manual. I believe the copy of the board layouts should be better at least.? Just my OCD jumping up. I have

Greetings. I thought I would give an update on my progress. I had to completely disassemble the remote antenna switch, including the motor.? It was completely seized up with rust, gunk and who knows

Nope. Not for sale. :D When I can manage to get my scanner set up I am going to scan a GOOD copy of the schematic. 73 -Jim NU0C "Stan Gammons via groups.io" <buttercup11421@...>

I gave my pristine condition RV75 manual to my friend, Jim, NU0C. Maybe y’all can work out something. Not meaning to volunteer you for anything Jim… 73 Stan KM4HQE

I am looking for a copy of the original manual with the foldout schematics in the back. I try to locate original manuals if I can. Please supply availability and price plus shipping to my QTH with is

Yes, they look correct. Contact me @billnopic@... If you care to part with one or more. Thanks 73 Bill W4WCS

Any other suggestions? Chuck

I can't take full credit. Barry N4BUQ first posted the info. Interestingly, Tektronix appears to still use Peltola.

Aha! Jim, you solved a mystery for me, as I knew I had seen those connectors somewhere else. Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana. Sent from [Proton

They are similar to Tektronix Peltola connectors in the way they work. https://w140.com/tekwiki/wiki/Peltola_connector Roughly RG174 size cable with a solid center conductor that slips into a socket

*** I'm guessing they're made by the Unobtanium corporation. In my radio, I mostly have trouble with the outer ground clip, which gets loosy-goosy on cables that get plugged and unplugged. Especially

What is the name/description, manufacturer, and part number of these coaxial connectors? Also, what is the particular coaxial cable or cables that are compatible with these connectors? Thanks/73,

I don't really think this is necessary as the DR7 does not draw a huge amount of current. If you notice, the connector pins are arranged so the plug will work either way it was plugged in. Based on

I bought them on Ebay. The listing was called: "4 Pin Molex Connector Kit, 22-26 AWG .100 Pins Arcade Pinball" And the vendor was "yorktown_arcade_supply" *** I seem to remember using a pretty

I have seen folks discuss that they have doubled up the power pins to the DR7 (the connector has 4 positions, but only 2 pins are used). As I am putting together an order for maintenance parts while

A friend who is a new ham and I have taken on a project TR7 in hopes of getting it on the air for him. I have enjoyed mine for 40 years. As we were doing inspection of the plug-in boards (well aware

*** Thank you. I used the largest heatsink available at heatsinkusa.com. The fins are vertical for good convection, and stick out the back of the unit. Most people seem to use heatsinks inside the

Now I would suspect R227 and R228. I'm assuming that you were able to adjust L210 to spec. You should see the steps in voltage superimposed on the bias from the diodes on the cathode of CR216. 73 -Jim