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Re: TR7 Connectors


 

Notice: I have decided to turn over my supply of TR7 connectors, cable and crimp tool to Steve WA4F. Except for one local Colorado ham who may come by my house this week, Steve will supply these items at little or no charge. There would likely be a modest fee to cover shipping or USPS mailing cost.

I will now start a major downsizing of Drake R-4C "parts radios". Local pickup at this time only. Shipping costs for an R-4C has skyrocketed. If a ham would like to pickup these "parts radios" up and part them out, this would be great.

Rob Sherwood, NC0B

-----Original Message-----
From: Rob Sherwood.
Sent: Friday, May 05, 2023 2:15 PM
To: [email protected]
Subject: RE: [DRAKE-RADIO] TR7 Connectors

If anyone needs some of those tiny crimp-on RG-174 size connectors I have lots of them. Had to purchase 1000 of each for interfacing my 7-SP speech processor to the TR-7. (Product long out of production.) There is the chassis connector (called the lunar lander in some Drake documentation!), the coax tip female connector, and the coax crimp-on connector. I have the crimp-on tool, but I don't know how well a generic crimp tool would work.

Rob, NC0B

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Steve Wedge, W1ES/4 via groups.io
Sent: Friday, May 05, 2023 2:07 PM
To: [email protected]
Subject: Re: [DRAKE-RADIO] TR7 Connectors

I remember seeing them used on the clock boards for DECSystem 10 and 20. Million-dollar systems.

The reasoning behind choosing them are the very small space requirements and the fact that these connectors were not designed to be disconnected/connected multiple times.

73,

Steve Wedge, W1ES/4

Time flies like an arrow.? Fruit flies like a banana.

Sent with Proton Mail secure email.

------- Original Message -------
On Friday, May 5th, 2023 at 3:57 PM, Gary Follett <xntrick1948@...> wrote:


BTW: Even the ¡°great¡± Collins Radio Company used these junk connectors all over the very expensive KWM-380. All TenTec radios up through the Omni V, same deal.

Gary

W0DVN

On May 5, 2023, at 2:54 PM, sohosources kirk@... wrote:

Considering all of the innovations that went into the TR-series, I too have always wondered why they used those weird, probably failure-prone coax connectors... :)

--Kirk, NT0Z

Those connectors are REALLY chintzy. I think the center pin is just the center conductor of the coax itself. I wonder if one could upgrade them to SMA connectors?

- Jerry, KF6VB



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