[aprssig] Icom 2820 Din to KPC3 connection?

Stephen H. Smith wa8lmf2 at aol.com
Fri May 10 16:14:33 CDT 2013


On 5/10/2013 12:24 PM, Robert Bruninga wrote:
> For Scout Jamboree I’m having to wire a KPC3 TNC to an ICOM 2820 in the blind.
> I wont get to see the radio but briefly and have to have it working but have
> zero experience with the radio.  Never seen one…
>
> I assume it is as simple as wiring the correct pins on the mini-DIN connector
> to the proper DB9 radio connector on the TNC and just tuning the radio to 144.39?
>


Uh No....

1)   You are going to have to fiddle with the TX deviation after you connect 
the two.

2)   Since the radio is a dual-bander, you will have to deal with getting the 
mini-DIN data port switched to the correct side of the radio, and then ensure 
it stays on that side.  There is a typically-clumsy multi-step menu option to 
to do this.  From Page 122 of the manual:

Packet operation band selection
Both bands, or either the left or right band only, can be specified for packet 
operation to suit your preference.
qPush [F•]to display function guide.
wPush [MENU](V/MHz•SCAN)(Right band’s)to enter MENU
screen.
eRotate  [DIAL] to select “PACKET” then push
[MAIN•BAND].
rRotate [DIAL] to select “PACKET BAND” then push
[MAIN•BAND].
tRotate [DIAL]to select desired band from MAIN (default),
left (L) and right (R), then push [MAIN•BAND].
•MAIN : The main band is used for packet operation.
•Left (L)/Right (r) : The selected left or right band can only
be used for packet operation.
yPush [BACK](V/MHz•SCAN)(Right band’s) twice to return
to frequency indication




3)   Manual warns to set TNC TXD to 50-100 milliseconds (!).




Full details on the pinout of the 6-pin mini-DIN data connector here on my website:

      <http://wa8lmf.net/6-Pin-MiniDin-Data-Connector>


_______________________________________________________________


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Stephen H. Smith    wa8lmf (at) aol.com
Skype:        WA8LMF
Home Page:          http://wa8lmf.net


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