[time-nuts] 3 volt/ 5 volt antenna

Bob Camp lists at rtty.us
Wed Mar 13 11:32:43 EDT 2013


There are a ton of "timing" GPS antennas on the usual auction sites. Cone
shaped or mushroom shaped white plastic enclosures. Mast mount with a coax
connector on the bottom (occasionally a pigtail). They generally sell for
less than $30. 

I've never seen one of the sub $30 ones that wanted anything other than 5
volts. Even the 5 volt ones seem to survive long term (days) exposure to
+12. I'm not sure I'd count on that with every single one of them though. No
I didn't test that "feature" on purpose....


-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Lester Veenstra
Sent: Wednesday, March 13, 2013 11:04 AM
To: 'Discussion of precise time and frequency measurement'
Subject: [time-nuts] 3 volt/ 5 volt antenna

I have a Thunderbolt and a Zypher Nanosync II GPSDO, both of which put out 5
V.  The typical EBAY "Marine GPS Antenna" is not voltage labeled, but since
it died after a few hours, I assume it was 3 volt.  Any suggestions on a mod
to either unit to change the feed to 3 volt, or suggestions on a reasonable
cost 5 volt antenna.  Do not really need a "survey grade" antenna.
   Thanks 73  Les

Lester B Veenstra  MØYCM K1YCM W8YCM
lester at veenstras.com

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