John, there is a manual on line at the Repeater-Builder site, but your 
unit may be an earlier version of the EPROM than the one documented in 
that manual.

The default decode sequence is 12345# if it is in the factory original 
state.  I had several that were not, and found that I could remove the 
RAM chip from the Dallas Semiconductor battery back up for a few 
minutes and have the processor come back up in the defauld condition 
when it was replaced and could program from there.

You have to put the processor back into the RS-232 access mode after 
this step, and you have to have a special cable (not standard RS-232) 
in order to program it via computer.  The cable is documented in the 
manual and you will find that older units will operate a sub-set of the 
commands shown in the manual.

73 - Jim  W5ZIT


-----Original Message-----
From: Maire-Radios <[EMAIL PROTECTED]>
To: Repeater-Builder@yahoogroups.com
Sent: Sat, 14 Jul 2007 11:59 am
Subject: [Repeater-Builder] Zetron








can any tell me the default program codes for the:

 

Zetron model 38

and

Zetron model 38A

 

thank you,  John

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