[time-nuts] Antenna for T-bolt
pete at petelancashire.com
Mon Apr 2 23:14:48 UTC 2012
All gone .. I got one. I'm happy for $26 but the thing was pretty
badly treated in its life and the seal did not
look well. If yours is as knocked around I'd suggest pulling it apart
and use a bit of sealer (RTV etc)
Now to come up with a mount, they are more rare and usually go for
more then the antennas
On Mon, Apr 2, 2012 at 4:00 PM, Jerry Mulchin <jmulchin at cox.net> wrote:
> Here is the antenna I purchased from Ebay (China). This is a Lucent 40dB timing antenna that should work
> for any GPS receiver. Mine took about 2 weeks to get here and there were no problems getting it. This unit
> is currently available for 'buy it now" at $28 dollars.
> Jerry Mulchin
> At 03:28 PM 4/2/2012, you wrote:
>>The Thunderbolt wants a higher gain antenna than most standard GPS receivers. I tried standard Garmin active antennas, and while they worked (I have a good view of the sky), signal levels could be better.
>>Best match probably is something like the HP/Symmetricom 58532A antenna, which has gain > 30dB -- most "active" GPS antennas are in the 24 - 26 dB range.
>>They're not cheap, but they'll do the job.
>>If you have much distance to cover, feed line is of course important as well -- 9913, LMR 400, good quality RG6, something with low loss at 1.5 GHz.
>>I'm using a 58532A feeding a Symmetricom 58535A active GPS splitter to run a Thunderbolt and a Datum Tymserve 2100. Feedline is 9913 to the splitter, and short LMR 195 SMA cables from there. (Yes you can find F to SMA adapters, on eBay, even though many will shudder at the concept...)
>>73 Bob K6RTM
>>On Apr 2, 2012, at 15:01, time-nuts-request at febo.com wrote:
>>> Message: 4
>>> Date: Mon, 2 Apr 2012 17:39:40 -0400
>>> From: "Bill Riches" <bill.riches at verizon.net>
>>> To: "'Discussion of precise time and frequency measurement'"
>>> <time-nuts at febo.com>
>>> Subject: [time-nuts] Antenna for t-bolt
>>> Message-ID: <01ac01cd1119$1c699af0$553cd0d0$@riches at verizon.net>
>>> Content-Type: text/plain; charset="US-ASCII"
>>> Hi guys,
>>> I have asked this question several times over the past few weeks and get no
>>> answer. Have I been ostracized??!!
>>> Question is that I am looking for suggestions for GPS antenna for t-bolt.
>>> The antenna that I am using now is a no name and I not know where it came
>>> from! Wonder if a Garman GA-30 will work?
>>> Bill, WA2DVU
>>> Cape May, NJ
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> Jerry Mulchin
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