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Eico Model 315 signal generator.

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Eico Model 315 signal generator. Empty Eico Model 315 signal generator.

Post by acbaker123 Sun Jan 31, 2021 10:40 am

I am having a hard time figuring out what type of leads the eico 315 used. it sounds like a coax wire with two ends but I do not know what type of screw on connector I need for the generator side and where I can find one.

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Post by acbaker123 Sun Jan 31, 2021 10:47 am

Was there a set for each output, the manual seems to suggest so, but I do not know if they are different

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Post by acbaker123 Sun Jan 31, 2021 10:52 am

it appears that it is just one of those screw on connectors with coax going to two alligator leads, with one conductor attached to the center of the connector and one on the shield, can someone confirm? is there a special connector that I can solder on to the shield? thanks

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Post by John Bartley Sun Jan 31, 2021 11:02 am

As far as I know the lead wire is shielded, a coaxial style. That's all I have ever used. The connector on the panel is what was known as a "microphone" connector. There are sources for them. Someone else will probably chime in with the correct ID and source.

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Post by acbaker123 Sun Jan 31, 2021 2:54 pm

kind of what i figured

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Post by Dale H. Cook Wed Feb 03, 2021 11:32 am

The connector is a coaxial microphone connector, which EICO frequently used on their AM signal generators. They were made by Amphenol, Switchcraft, and perhaps others. The Amphenol part is 75-MC1F, the Switchcraft part is 2501F. The Switchcraft part is, AFAIK, still in production, and is easily available from Mouser, Digi-Key, and even on Amazon. The cable can be a few feet of RG-58 coax with a pair of alligator clips on the other end.
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Post by John Bartley Thu Feb 04, 2021 9:59 am

Dale H. Cook wrote:The Switchcraft part is, AFAIK, still in production, and is easily available from Mouser, Digi-Key, and even on Amazon.

Nice to see them available. I thought they were NLA some time ago. They certainly weren't easy to find and people were switching them out to BNC.

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Post by acbaker123 Thu Feb 04, 2021 10:02 am

i got everything an amazon and made a nice lead for it thank you

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