[time-nuts] [Off-List] antennas & GPS Splitters

Mike Feher mfeher at eozinc.com
Mon Sep 27 15:34:07 UTC 2010


Brooke -

The data can be found on the Symmetricom site. Connectors are N. 73 - Mike

Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960




-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Brooke Clarke
Sent: Monday, September 27, 2010 11:29 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] [Off-List] antennas & GPS Splitters

Hi Mike:

Can you tell me about features of the 58535A?
Connector type, DC pass through, photo?
Total to zip 95482?

Have Fun,

Brooke Clarke
http://www.PRC68.com


Mike Feher wrote:
> I still have some of the Symmetricom 58535A GPS splitters/amplifiers.
> Details:
>
> 1 58535A  $35 plus $ 4.95 priority flat rate shipping
> 2 58535A  $65 plus $ 4.95 priority flat rate shipping
> 4 58535A $120 plus $10.70 priority flat rate shipping
>
> These are new in original packing.
>
> PayPal to my email plus 4% for PP fees, or check for exact amount. PP
email
> is n4fs at eozinc.com
>
> Thanks&  Regards - Mike
>
>
> Mike B. Feher, N4FS
> 89 Arnold Blvd.
> Howell, NJ, 07731
> 732-886-5960
>
>
>
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of k6rtm at comcast.net
> Sent: Monday, September 27, 2010 10:50 AM
> To: time-nuts at febo.com
> Subject: Re: [time-nuts] antennas
>
> Rather than put up two antennas, why not use one, and pick up a
> HP/Symmetricom GPS splitter? (Mini-Circuits makes a similar unit). You can
> find them on eBay for various prices. The Symmetricom one, the 58535A,
> supports 2 GPS receivers. It has a built-in amplifier and filters, so it
> provides high isolation between the GPS units. It's powered from the GPS
> units, and passes power to the antenna.
>
> The downsides are that it costs more than a pair of cheap antennas, it's
> heavy (heavier than the Thunderbolt!), and uses type N connectors.
>
> But it's low noise, and you only have one antenna and feedline to worry
> about.
>
> 73 bob k6rtm
> ------------------------------
>
> Message: 3
> Date: Sun, 26 Sep 2010 15:56:47 -0400
> From: "Heathkid"<heathkid at heathkid.com>
> Subject: Re: [time-nuts] DS1620 Variants in the Thunderbolt
> To: "Discussion of precise time and frequency measurement"
> <time-nuts at febo.com>
> Message-ID:<795F7AA593814ECB9AA24F0B55CAD45D at D1X25BD10>
> Content-Type: text/plain; format=flowed; charset="UTF-8";
> reply-type=original
>
> Thanks for all the information on the DS1620.
>
> As it turns out, both of the TBolts (remember I got the from two different
> sellers and appear identical) have the Trimble OCXO, v3.00 firmware, but
the
>
> DS1620's are marked as follows:
>
> DS1620
> 0415E2
> 531AD
>
> DS1620
> 0239D1
> 690AB
>
> Interestingly, the first one appears to have been swapped out at some
point
> (flux residue all over the chip / had to clean it off to read the
markings).
>
> I've already ordered another "D1" to swap out the "E2" but really need to
> get them both up and running (still trying to figure out how to mount the
> antennas!) and see how much difference there really is.
>
> 73 Brice KA8MAV
>
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>    

-- 
Have Fun,

Brooke Clarke
http://www.PRC68.com


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