[ICOM] IC 229H deviation adjustment?

[D C *Mac* Macdonald]

In all likelihood, the output of your TNC
is grossly overdriving your IC-229H.
 
Maximum total deviation on packet (both tones)
should be UNDER 3 kHz.  High tone will probably
be around 2 to 2.5 kHz and low tone around 1.5
kHz at the maximum.

* * * * * * * * * * *
* 73 - Mac, K2GKK/5 *
* (Since 30 Nov 53) *
* Oklahoma City, OK *
* USAF, Ret (61-81) *
* * * * * * * * * * *

 
 

 

> Date: Fri, 15 Jul 2011 09:26:07 -0700
> From: va7nt at telus.net
> To: icom at mailman.qth.net
> Subject: [ICOM] IC 229H deviation adjustment?
> 
> Has anyone had any experience adjusting the deviation on the IC 229H?
> 
> I have a copy of the service manual, and know that R12 on the main board 
> is the
> adjustment point, but I don't have a service monitor, and was wondering 
> if there
> was some other way to assess the amount of adjustment needed? I am trying to
> use the rig for packet, and I suspect that the deviation is too wide to 
> allow me
> to contact a local packet cluster, which I can hear fine, but cannot seem to
> connect to.
> 
> Any thoughts would be greatly appreciated.
> 
> cheers, Paul - VA7NT
> 
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