[time-nuts] Odetics 325: Replacing receiver...?

[Doug Millar]

\\



Hi Bruce,
         I have two of the units, but have never had anything but 
reset problems. Both are standard GPS receivers , not down 
converters. Do you have a manual? I actually have one but it doesn't 
say much about the receiver interface, however I can look for you.
                 Doug  K6JEY


At 12:49 AM 12/10/2006, you wrote:
>Hi, Rob,
>
>*********** REPLY SEPARATOR  ***********
>
>On 10-Dec-06 at 08:29 Rob Kimberley wrote:
>
> >Hi Bruce,
> >
> >The 325 came with different RX modules. Some of the earlier ones also used
> >a down converter on the antenna.
>
>         Yes, I saw references to that in the manual.
>
> >What antenna are you using (is it the original?), what is the RX module? A
> >quick check to see if it is a down converter type is to check on the
> >antenna connector to see if you have 10 MHz on there, and also the 
> voltage. I
> >believe these used a 12v supply, so trying the unit with a standard modern
> >antenna (typically 3.3 or 5V input) would result in antenna damage.
>
>         Actually, I've gotten quite lucky antenna and 
> receiver-wise. I had the unit open today, and discovered that the 
> receiver is a fairly late-model Magellan OEM type, specifically an 
> "OEM 5000." I've already dropped a note to Thales (who bought 
> Magellan) to see if I can get some details on it.
>
>         You are correct about the DC bias (it's 12V). Fortunately, 
> I have a Trimble reference antenna which can handle anything from 5 
> to 15V. I've been using it to test, but still have not managed to 
> pick up any satellites.
>
> >Odetics changed its name to Zyfer (I worked for them then), and then more
> >recently FEI-Zyfer. The 325 is obsolete and the guys in Anaheim do not
> >offer any support whatsoever now.
>
>         Ah. Then my E-mail to them will probably go unanswered (sigh).
>
> >Time Nuts is your best bet for an answer, and I know that there are at
> >least two 325s lurking out there amongst fellow ' Nuts.
>
>         Excellent! I'm hoping someone will be able to shed some 
> insight on this beastie. I'm hoping, since it uses a Magellan 
> module, that it understands NMEA sentences. If so, it would be 
> trivial to swap the existing receiver for a workable one.
>
>         Thanks much.
>
>
>
>-=-=-=-=-=-=-=-=-=-=-=-
>Bruce Lane, Owner & Head Hardware Heavy,
>Blue Feather Technologies -- http://www.bluefeathertech.com
>kyrrin (at) bluefeathertech do/t c=o=m
>"If Salvador Dali had owned a computer, would it have been equipped 
>with surreal ports?"
>
>
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