Hey Jim, with regard to what you wrote below a few days ago, I looked
in the radio manual and the band data jack pinout as well as the
linear connection guff on page 13.
As I see it, you have the opto isolator connected to pin 1 (13.8V)
and pin 2 (TX Gnd) on the 8 pin Band Data Jack. This means that the
linear control is taken out before the relay and its RCA TX Gnd jack.
I take it that this is what you have done.
My ODC-15s are in the mail form far away across the sea.
73 and thanks,
Alek. VK6APK.
>&&& I use a P+B opto isolator on the output of both my MK-V`s
>(ODC-15) is rated for 9-18 vdc input at 15 ma. Output side of it is
>rated at 60 vdc at 3A CCS. (ODC-15A) is rated for 9-18 vdc input at
>15 ma.Output side is rated for 200 Vdc at 1A CCS. The input to output
>isolation is a whopping 4 kv. The 13.8 vdc to operate em is available on
>the band data jack on the MK-V. The GRND that actually operates them,
>comes from the same band data jack..Electronic grnd.
>(internal yaesu switch transistor) The stock yaesu spst mech relay is SHUT
>OFF, no longer used ! It`s useless anyway, since it takes 15 msecs to
>operate (which just adds ANOTHER 15 msecs to ur already slow
>collins relay). The P+B ODC-15 and A version... will operate in 100
>microseconds. The release time on both opto`s is 750 microseconds.
>No more hot switching ur collins on SSB.
http://www.qrz.com/db/vk6apk
http://www.qrz.com/db/vk6py
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