[ICOM] IC 229H deviation adjustment?

[Paul Erickson]

Thanks Everyone for the replies. Got it sorted out, and it turns out 
that I had not
adjusted the audio output from the rig to the tnc properly, so was not 
getting all
the packets properly. Got that adjusted properly, and not have a solid 
connection
to the cluster. Thanks again everyone for the time and attention.

cheers, Paul - VA7NT

On 07/15/2011 10:59 AM, Jim Hargrave wrote:
> Paul,
>
> I would first assume the radio deviation is correct.
> I would suspect the TNC may be over or under driving the radio.
>
> Since you do not have a service monitor or Deviation meter, I would suggest
> you listen to your signal using another receiver.
>
> Press a button on your Mic TTP and listen to the tone volume. Now place the
> TNC/Radio in transmit and adjust the TNC audio output for the same relative
> volume or slightly lower. This should place you in the ball park. You could
> actually set the TNC output lower and it should work ok as long as you have
> a good path to the Packet digi/cluster.
>
> I ran a Packet BBS for many years and had ports on four bands. I adjusted
> the radio deviation using a Heathkit IM-4180 deviation meter.
> I set the voice deviation on the radio to 5KHZ and the TTP deviation to 3
> kHz and then adjusted the TNC's to 2.5 KHZ. This proved to be a successful
> setup. All my radios were ICOM except the one on 223.58 mhz.
>
>
>      73s de Jim
>         W5IFP
>
>
>
>
>    >  -----Original Message-----
>    >  From: icom-bounces at mailman.qth.net
>    >  [mailto:icom-bounces at mailman.qth.net]On Behalf Of Paul Erickson
>    >  Sent: Friday, July 15, 2011 11:26 AM
>    >  To: ICOM Reflector
>    >  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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>    >  Icom Users Net: Sundays, 1700Z, 14.316 MHz
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>
> ----
> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> Icom FAQ: http://www.qsl.net/icom/
> To support QSL/QTH.net: http://www.qsl.net/donate.html
>
>