Looking for a mic connector for this marine band vhf radio . Its a 7 pin din type but not a standard din a bit smaller diameter. Trying to wire in a mic from an older seavoice . A pinout would be incredibly useful too.

wrote:
Looking for a mic connector for this marine band vhf radio.
Its a 7 pin din type but not a standard din a bit smaller diameter.

Could it be a mini-DIN, like a PS/2 mouse or keyboard? The outer
shell on these is about 9.5 mm diameter.
http://en.wikipedia.org/wiki/Mini-DIN_connector

US Citizens Band radios and some other mobile radios used a series of
round connectors like this
http://www.calcentron.com/Pages/phil...connectors.php
starting in probably the 1970s. The 4-pin type was most common on a CB
but they exist all the way up to 8 pin. The female connector has a
threaded ring that "floats" on the body of the connector and is used to
secure the two halves together. The individual pins are much larger
diameter than the ones on a DIN connector.

A pinout would be incredibly useful too.

The bare minimum is probably three wires: earth/ground/shield, mic
audio, push-to-talk. If the original microphone had other features like
channel up/down buttons or a channel display, that's what some of the
other wires are for.

Simrad seems to have gone to some lengths to make the manual for this
radio unavailable online.
http://www.ybw.com/forums/showthread...-RT1400-manual
suggests that it used to be available, but Simrad's site from that era
has too much Java**** for archive.org to deal with. I found a slightly
later version of their site but archive.org didn't catch the zip file
with the manual. Their current site doesn't list it at all.

There is a manual for the Simrad RD68 VHF radio on a third-party site
http://www.dolcetto.org.uk/downloads...e%20Manual.pdf
or
http://is.gd/OHGGSv
and on PDF page 64 it mentions that the "fist mic" for the RD68 is the
same as the one for the RT1200 and RT1400. Several of the schematic
pages are also labeled RT1200/RT1400. PDF page 37 has the schematic for
the "fist mic", and it is as simple as audio, PTT, and ground - no pin
numbers though. PDF page 38 has a schematic for a slightly more
complicated handset? which uses more wires - still no pin numbers.

Matt Roberds

On 21/05/2014 21:16, wrote:
Looking for a mic connector for this marine band vhf radio . Its a 7 pin din type but not a standard din a bit smaller diameter. Trying to wire in a mic from an older seavoice . A pinout would be incredibly useful too.


Unless you have to keep as original, remove the socket and replace with
something easier.

Thanks for the service manual . I think i have found the mic gnd and ptt pins from the circuit in the manual a great help thanks.

Will try and find a socket that will fit from the spares box . Space is limited as original is pcb mounted. Otherwise its a gromet and wire it in. The chandlers were very scathing about the navico seemed to think it was prehistoric or something they should have seen the seavoice its replacing !

Will try and find a socket that will fit from the spares box . Space is limited as original is pcb mounted. Otherwise its a gromet and wire it in. The chandlers were very scathing about the navico seemed to think it was prehistoric or something they should have seen the seavoice its replacing !