I am looking for the 'official' name and any 'nick names' for the type of connector used on the Eico 232 VTVM. Thanks for the help...I'm confused.

Stan,

Check this link:

http://bama.edebris.com/manuals/eico/232/

Terry F

:Thanks Terry. I was not able to find where they identified the type connector used. I actually have this unit and manual, just need to know what the connector is known by. Is it a TNC?

:Stan,
:
:Check this link:
:
:http://bama.edebris.com/manuals/eico/232/
:
:Terry F

Stan, can you descibe the connector. A lot of them were the older type Amphenol. The panel mount one appears as a threaded ring, there is a phenol disk with a "button" in center. PL

::Thanks Terry. I was not able to find where they identified the type connector used. I actually have this unit and manual, just need to know what the connector is known by. Is it a TNC?
:
::Stan,
::
::Check this link:
::
::http://bama.edebris.com/manuals/eico/232/
::
::Terry F

:The probe coax has the same thing but has a threaded ring or collar to screw into the panel connector. It appears that the buttons simply touch and are pressed together by the screw-on connection. I found one on ebay called a 'single pin'connector, but I can't find that in any cataloges to compare prices.

: Stan, can you descibe the connector. A lot of them were the older type Amphenol. The panel mount one appears as a threaded ring, there is a phenol disk with a "button" in center. PL
:
:
:::Thanks Terry. I was not able to find where they identified the type connector used. I actually have this unit and manual, just need to know what the connector is known by. Is it a TNC?
::
:::Stan,
:::
:::Check this link:
:::
:::http://bama.edebris.com/manuals/eico/232/
:::
:::Terry F

::The probe coax has the same thing but has a threaded ring or collar to screw into the panel connector. It appears that the buttons simply touch and are pressed together by the screw-on connection. I found one on ebay called a 'single pin'connector, but I can't find that in any cataloges to compare prices.
:
:: Stan, can you descibe the connector. A lot of them were the older type Amphenol. The panel mount one appears as a threaded ring, there is a phenol disk with a "button" in center. PL
::
::
::::Thanks Terry. I was not able to find where they identified the type connector used. I actually have this unit and manual, just need to know what the connector is known by. Is it a TNC?
:::
::::Stan,
::::
::::Check this link:
::::
::::http://bama.edebris.com/manuals/eico/232/
::::
::::Terry F

:::The probe coax has the same thing but has a threaded ring or collar to screw into the panel connector. It appears that the buttons simply touch and are pressed together by the screw-on connection. I found one on ebay called a 'single pin'connector, but I can't find that in any cataloges to compare prices.
::
::: Stan, can you descibe the connector. A lot of them were the older type Amphenol. The panel mount one appears as a threaded ring, there is a phenol disk with a "button" in center. PL
:::
:::
:::::Thanks Terry. I was not able to find where they identified the type connector used. I actually have this unit and manual, just need to know what the connector is known by. Is it a TNC?
::::
:::::Stan,
:::::
:::::Check this link:
:::::
:::::http://bama.edebris.com/manuals/eico/232/
:::::
:::::Terry F

Stan:

I had purchased an old EICO 249 VTVM with a similar RF connector. The original unit had a "amphenol" connector which is the disk and button set-up and the coax cable simply screws into the fitting on the VTVM. Many of these (mine included) were replaced with the "newer" connector called a BNC connector which are supposedly more reliable and have a twist/lock connection. An off shoot of the BNC connector is a TNC connector which is a threaded BNC and is supposedly far superior to the BNC. I believe the TNC connectors were used for microwave frequencies.

I have test equipment with both the old amphenol and the newer BNC connectors. I really don't see any difference in performance. Hope this helps!

Regards,

Allan

::::The probe coax has the same thing but has a threaded ring or collar to screw into the panel connector. It appears that the buttons simply touch and are pressed together by the screw-on connection. I found one on ebay called a 'single pin'connector, but I can't find that in any cataloges to compare prices.
:::
:::: Stan, can you descibe the connector. A lot of them were the older type Amphenol. The panel mount one appears as a threaded ring, there is a phenol disk with a "button" in center. PL
::::
::::
::::::Thanks Terry. I was not able to find where they identified the type connector used. I actually have this unit and manual, just need to know what the connector is known by. Is it a TNC?
:::::
::::::Stan,
::::::
::::::Check this link:
::::::
::::::http://bama.edebris.com/manuals/eico/232/
::::::
::::::Terry F
:
:Stan:
:
:I had purchased an old EICO 249 VTVM with a similar RF connector. The original unit had a "amphenol" connector which is the disk and button set-up and the coax cable simply screws into the fitting on the VTVM. Many of these (mine included) were replaced with the "newer" connector called a BNC connector which are supposedly more reliable and have a twist/lock connection. An off shoot of the BNC connector is a TNC connector which is a threaded BNC and is supposedly far superior to the BNC. I believe the TNC connectors were used for microwave frequencies.
:
:I have test equipment with both the old amphenol and the newer BNC connectors. I really don't see any difference in performance. Hope this helps!
:
:Regards,
:
:Allan

:Allan, thanks for the info. I FINALLY found a site that identified the connector. it is an Amphenol 5/8" 2501 connector for a J30 microphone.

Stan

I think those Amphenol mic connectors are (or at least were) available from Mouser.

I have several old Eico test instruments with Amphenol mic connectors. I changed them all to BNC, which is what modern test leads often have. The repacement BNC jack fits in the same size panel hole as the Amphenol.
Doug

:I think those Amphenol mic connectors are (or at least were) available from Mouser.
:
:I have several old Eico test instruments with Amphenol mic connectors. I changed them all to BNC, which is what modern test leads often have. The repacement BNC jack fits in the same size panel hole as the Amphenol.
:Doug
Those Amphenol connectors are well known for failing at the solder joint that is the connection to the test set.
Go with BNC.
Lewis

:I think those Amphenol mic connectors are (or at least were) available from Mouser.
:
:I have several old Eico test instruments with Amphenol mic connectors. I changed them all to BNC, which is what modern test leads often have. The repacement BNC jack fits in the same size panel hole as the Amphenol.
:Doug
Those Amphenol connectors are well known for failing at the solder joint that is the connection to the test set.
Go with BNC.
Lewis

I believe that the "button on the test lead (the one with the threaded collar) was spring load for positive contact to button on pnl connection. That's why they part at the solder joint. PL

::I think those Amphenol mic connectors are (or at least were) available from Mouser.
::
::I have several old Eico test instruments with Amphenol mic connectors. I changed them all to BNC, which is what modern test leads often have. The repacement BNC jack fits in the same size panel hole as the Amphenol.
::Doug
:Those Amphenol connectors are well known for failing at the solder joint that is the connection to the test set.
:Go with BNC.
:Lewis

The shorting type was spring loaded and shorted the connection when nothing was connected. This would keep hum from entering a amplifier when the microphone was disconnected. Both types were made, shorting and non shorting.

: I believe that the "button on the test lead (the one with the threaded collar) was spring load for positive contact to button on pnl connection. That's why they part at the solder joint. PL
:
:
:
:::I think those Amphenol mic connectors are (or at least were) available from Mouser.
:::
:::I have several old Eico test instruments with Amphenol mic connectors. I changed them all to BNC, which is what modern test leads often have. The repacement BNC jack fits in the same size panel hole as the Amphenol.
:::Doug
::Those Amphenol connectors are well known for failing at the solder joint that is the connection to the test set.
::Go with BNC.
::Lewis

:I am looking for the 'official' name and any 'nick names' for the type of connector used on the Eico 232 VTVM. Thanks for the help...I'm confused.

They were commonly called the Amphenol mike connector. You will still find them in catalogs such as Radio Daze, Allied and others. It was an audio connector, not RF.

Bruce