Proset

[Phillip Buckholdt]

   Hi;

I have a Heil Proset that I got from Elecraft. I hooked up according to spec
sheet, jumpers on all pins on the header and 5.6k res pins 1 to6 on mic
socket. This works fine if I key the K-2 with my straight key. I have a Heil
foot switch I use with my IC-746 and Heil ICM. I ordered a new AD-1k adapter
but that is'nt the problem. I have a Radio Shack mic that works fine ( # 1
audio, # 2 ptt and 78 gnd).

Anyone have any ideas?

   Thanks Phil (# 5423)
 

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[Don Wilhelm-3]

Phil,

You didn't say what you real problem may be.  If the mic works fine when you
activate PTT with the key, then the mic itself is working properly and
whatever problem must be in the adapter.  The adapter is nothing but wires
going from the jacks to the 8 pin mic plug.

It sounds like the AD-1k adapter is not correctly wired for operation with
the footswitch for use with the K2.  You should be able to de-bug it easily
with an ohmmeter.  Plug a phone plug into the footswitch jack on the adapter
and check continuity between the tip and pin 2 and also chack continuity
between the shell and either pin 7 or pin 8.  If you have continuity in both
cases, the footswitch should activate the PTT in the K2.

If you find no continuity from the footswitch jack shell to either pin 7 or
pin 8, then check to see if the footswitch jack shell is wired to the shell
of the mic jack - if it is, that is in error, but will work if you ground
the K2 mic jack.  In this case, the better alternative is to rewire the
adapter plug.  The fact that you apparently have 2 adapters that do not work
with the footswitch indicates to me that  HeilSound is connecting the shell
of the footswitch jack to the shell of the 8 pin mic plug when they should
be using either pin 7 or pin 8 for proper operation with the K2.

73,
Don W3FPR

> -----Original Message-----
>
> I have a Heil Proset that I got from Elecraft. I hooked up
> according to spec
> sheet, jumpers on all pins on the header and 5.6k res pins 1 to6 on mic
> socket. This works fine if I key the K-2 with my straight key. I
> have a Heil
> foot switch I use with my IC-746 and Heil ICM. I ordered a new
> AD-1k adapter
> but that is'nt the problem. I have a Radio Shack mic that works
> fine ( # 1
> audio, # 2 ptt and 78 gnd).
>
> Anyone have any ideas?
>
>    Thanks Phil (# 5423)
>
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
>  http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>
>
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