[FADCA] Re:Help

[bud thompson]

Virgil - I'll respond in more detail as time permits...

Meanwhile... there seems to be a lot of variables in your problem.. so start
here with the receiver set up and let me know more..

1.  Where in the radio are you getting the audio (RXA) for the TNC?
(Speaker? Data port?) Can you hear the speaker when you are running packet? 
Can you turn the volume down to not hear the speaker if you like and still 
run packet?

If the DCD/RCV LED on your TNC is ON when there is no packet signal, see if
the TNC cmd: CD is set to internal.  If so set it to soft and the LED goes 
off.

If that doesn't help -

2.  Start with TNC cmd: CD internal
3.  Set the volume control on the receiver for normal listening level on
voice.  Have the squelch on to quiet the speaker when there is no signal.
4.  W/o any incoming RF signal to the radio (antenna can be on, just go to a
frequency where there is no activity)
     Open up the squelch all the way leave it there until later.
5.  If the DCD/RCV LED on the TNC does not come on you may not have any RXA 
going to the TNC
5a. If the DCD/RCV LED on the TNC comes on, turn down the Volume control.
If you can turn it down all the way and the LED does not go OFF then it 
makes no difference where the volume control is set for Packet.  You can set 
it for comfortable listening to the Packet Racket or keep it down to not 
hear it.
5b. Set the TNC cmd: CD soft - the DCD/RCV LED should go out.  If this is 
the case, you should run your packet operations with the squelch wide open 
for optimum packet sensitivity.
5b. If turning the volume control down turns off the DCD (with cmd: CD in 
internal) then you must set the volume control to a nominal level for the
TNC.  Here is how with normal radio noise w/o signals- Put TNC cmd: CD 
internal
A. With the squelch full open and the DCD/RCV LED on, turn the volume
control down until the LED goes off.
B.  Then start turning the volume control up until the DCD/RCV LED comes on.
C.  Turn up the volume a tad more (say two hours on an analog watch face)
D.  Now turn up the squelch until the DCD/RCV LED goes out.  Turn the
squelch up just a tad more so that the LED will not light on occasional 
noise.

This is where you want to run the receiver section when on
packet. (You may have to put a pillow over the speaker if it is on!)

If you are taking RXA from the speaker jack and that silences the speaker,
then after setting the volume control as above, open the squelch all the
way, and use TNC cmd: CD soft - the DCD/RCV LED goes out, and your set up is 
max sensitivity for
packet.

bud



----- Original Message ----- 
From: <Kg4fcd at aol.com>
To: <fadca at mailman.qth.net>
Sent: Friday, December 17, 2004 11:02
Subject: [FADCA] Re:Help


> My packet set up is:
> Kantronics KPC3+ TNC. It is connected to a Kenwood Tm-G707A.
> The radio was just returned from Kenwood telling me it and the cable were
> ok.
> I have not as yet heard from Quatrains.
> The problem;
> With everything connected except the antenna to the radio. The TNC is
> turned
> on and everything is ok and it signs on like it should. As soon as I turn
> on
> the radio, the TNC goes into a hard Receive mode. Both the radio and the
> TNC
> are set to 1200 baud.
> I have tried a hard reset on the TNC and nothing changes. I have tried
> changing them both to 9600 baud but that does not help.
> I would like to upgrade to a Kantronics 9612 but at this point I am
> tempted
> to chuck the whole mess.
> Until IVAN came thru everything worked fine. At that time I had a power
> surge
> that killed the TNC but Kantronics says it has been fixed.
> I also have a new Kenwood TM-G707 that does the same thing which points me
> back to the TNC. Or can there be something else?
>
> Help,
>
> 73
> Virgil Gibbs Kg4fcd
> Manager NTS Eagle Net
> WCF Information Officer
> Mentor Online EMCOM Study
> Packet Mail Box Kg4fcd-1
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