[Tech-Assist] Starlink Frequency adjust procedure...

[Burt I. Weiner]

In my notes I have the following procedure for setting frequency in 
the Starlink Radios:

 From the transmitter's main menu do the following and make sure the 
TX has been on at least 5 minutes.

System
<enter>
Factory Cal
<enter>
Qam Modem
<enter>
OCXO
<enter>
Change "CW" to ON
<enter>

Now that the modulation is turned off, the frequency will read 
correctly on a counter, Service Monitor or Letcher Wires.  If the TX 
is off frequency, then do the following:

Put the cursor up on FREQ ADJ and hit the side arrow key several 
times in the direction you need to go. Left to reduce and right to increase.
<enter>
You will have seen a slight change in frequency so keep doing this 
until it's as close as you can get it.
Change "CW" to off
<enter>
Escape
Synth Lvl
<enter>
<enter>
Escape
Escape
Escape
Escape
Save Settings "YES"
<enter>

For the receiver:

 From the main menu do the following and make sure the RX has been on 
at least 5 minutes.
System
<enter>
Factory Cal
<enter>
Qam Modem
<enter>
OCXO
<enter>
Change "MASTER" to "SLAVE"
<enter>
Start hitting the down arrow key several time and see if the FREQ ADJ 
number starts moving at all.
If it does, then keep hitting the down button until it settles in on a number.
Change "SLAVE" to "MASTER"
<enter>
Escape
Synth Lvl
<enter>
<enter>
Escape
Escape
Escape
Escape
Save Settings "YES"
Enter>

I hope this is of some help.

Burt

At 06:00 AM 7/6/2011, tech-assist-request at radiolists.net wrote
>Content-Type: text/plain; charset=iso-8859-1; format=flowed
>
>Hi, There is an easy way to put the Starlink into CW mode; Its a 
>setting in the Factory Cal menu I believe. This will allow you to 
>accurately measure the RF output either w/ a Bird Meter or on the 
>internal meter. Its also is a handy way of checking the center freq 
>of the TX signal.
>
>You should also check the freq of the 12.8 MHz Ref Osc at least once 
>a yr for both TX and RX units. Use an ACCURATE Freq Counter set to 
>the slowest gating rate/highest resolution it has. If the Osc is off 
>by even 20 Hz, it can cause decode drop outs and slow lock up times.
>
>Cheers,    Steve Donnell  DE WA1YKL