Re: [time-nuts] GPS Distribution amplifier
For anyone interested the data sheets for the HP 58516A L1 Distribution Amplifier and 58532A L1 Antenna are available at www.to-way.com Best Regards, Hadley, K7MLR At 10:02 PM 8/14/2006, you wrote: The PCB is the same for both models. It is easy to convert these to take DC on port 1, if you are comfortable with SMT soldering. I don't recall the exact details, but I found it fairly obvious. Did you have to remove the circuit board from the metal housing to make the mod? If so, that would make it much more difficult. No, you just take the top off, and then add/remove/replace a component or two. A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed. ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] GPS Distribution amplifier
Here's an eBay search I built from Toms list. (58512A,58516A,58517A,58535A,58536A,58504A,58532A) (HP, AGILENT, HP/AGILENT, HEWLETT PACKARD, Symmetricom) I researched that 58535A Glenn mentioned; they've been trying to sell it since May with no takers. I was thinking of putting up a FOL-100 fiber optic antenna link, with fiber and connector. Jack -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Van Baak Sent: Monday, August 14, 2006 3:03 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] GPS Distribution amplifier In need of a GPS distribution amplifier. Any ideas? (Ebay isn't good for this) Magnus, Over the years I've picked up all mine on eBay; good ones by HP/Agilent, or Symmetricom. Ignore the high fixed-priced sellers; if you're patient you can get them for as little as $10 to $20 per port. Many of these are still new (telecom surplus). Search by P/N: 58512A (2-port) 58516A (4-port) 58517A (8-port) 58535A (2-port) 58536A (4-port) 58504A antenna (puck) 58532A antenna (cone) /tvb ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
[time-nuts] GPS Distribution amplifier
Hi! In need of a GPS distribution amplifier. Any ideas? (Ebay isn't good for this) Cheers, Magnus ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] GPS Distribution amplifier
Hi Magnus: I use satellite splitters and amps for GPS, see: http://www.pacificsites.com/~brooke/4GPS.shtml Have Fun, Brooke Clarke -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com Magnus Danielson wrote: Hi! In need of a GPS distribution amplifier. Any ideas? (Ebay isn't good for this) Cheers, Magnus ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] GPS Distribution amplifier
In message: [EMAIL PROTECTED] Poul-Henning Kamp [EMAIL PROTECTED] writes: : In message [EMAIL PROTECTED], Magnus Danielson wri : tes: : Hi! : : In need of a GPS distribution amplifier. Any ideas? (Ebay isn't good for this) : : If you only need two outlets you can just do a passive splitter, : you need a tiny capacitor in series with the center wire on one of them : and a resister to GND to fool the antenna-current monitoring circuit. The company I work for makes rack mounted GPS distribution amps. Contact me off list is you are interested... Warner P.S. I'd mention names here, but I'm unsure what the etiquette of such things are on this list... ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] GPS Distribution amplifier
I picked up an HP 58516A (four-port) on ebay last year, very cheaply. I didn't need four ports, but the price was right. Magnus, you probably already know this, but just in case you don't, I'll mention it. Those HP splitters come in two varieties. On one, the 5VDC is fed into port 1. On the other variety, the 5VDC goes to a separate SMC connector. Mine came with the SMC connector (of course) and I had trouble finding the mating connector. - Original Message - From: Glenn [EMAIL PROTECTED] To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Monday, August 14, 2006 1:42 PM Subject: Re: [time-nuts] GPS Distribution amplifier Magnus Danielson wrote: In need of a GPS distribution amplifier. Any ideas? (Ebay isn't good for this) Good or not, there are a few HP Agilent 58535A GPS Distribution Amplifier http://cgi.ebay.com/HP-Agilent-58535A-GPS-Distribution-Amplifier_W0QQitemZ140016445294QQihZ004QQcategoryZ25392QQssPageNameZWDVWQQrdZ1QQcmdZViewItems on ebay right now. I've seen others come through from time to time. -glenn ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] GPS Distribution amplifier
In need of a GPS distribution amplifier. Any ideas? (Ebay isn't good for this) Magnus, Over the years I've picked up all mine on eBay; good ones by HP/Agilent, or Symmetricom. Ignore the high fixed-priced sellers; if you're patient you can get them for as little as $10 to $20 per port. Many of these are still new (telecom surplus). Search by P/N: 58512A (2-port) 58516A (4-port) 58517A (8-port) 58535A (2-port) 58536A (4-port) 58504A antenna (puck) 58532A antenna (cone) /tvb ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] GPS Distribution amplifier
In need of a GPS distribution amplifier. Any ideas? (Ebay isn't good for this) Actually, it might be if you're not too concerned about phase noise. I've used video distribution DAs in the past with good results, but they're limited to locking purposes only. Paul ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] GPS Distribution amplifier
From: Tom Van Baak [EMAIL PROTECTED] Subject: Re: [time-nuts] GPS Distribution amplifier Date: Mon, 14 Aug 2006 13:02:58 -0700 Message-ID: [EMAIL PROTECTED] In need of a GPS distribution amplifier. Any ideas? (Ebay isn't good for this) Magnus, Tom, Over the years I've picked up all mine on eBay; good ones by HP/Agilent, or Symmetricom. Ignore the high fixed-priced sellers; if you're patient you can get them for as little as $10 to $20 per port. Many of these are still new (telecom surplus). Search by P/N: 58512A (2-port) 58516A (4-port) 58517A (8-port) I was bidding on a 58517A but since Ebay isn't a good action-house, there is no real chance to raise bids. Cheers, Magnus ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] GPS Distribution amplifier
I picked up an HP 58516A (four-port) on ebay last year, very cheaply. I didn't need four ports, but the price was right. Magnus, you probably already know this, but just in case you don't, I'll mention it. Those HP splitters come in two varieties. On one, the 5VDC is fed into port 1. On the other variety, the 5VDC goes to a separate SMC connector. Mine came with the SMC connector (of course) and I had trouble finding the mating connector. The PCB is the same for both models. It is easy to convert these to take DC on port 1, if you are comfortable with SMT soldering. I don't recall the exact details, but I found it fairly obvious. -ch ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] GPS Distribution amplifier
--- xaos [EMAIL PROTECTED] wrote: 8-way splitters Make sure it passes DC. Your antenna will need it. Pass the DC from one port and block it from all others. What size, type block? /b __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Re: [time-nuts] GPS Distribution amplifier
A 50nF Cap should do just fine. Little smaller/bigger probably ok as well. Size? A small ceramic should be fine. After all we are not expecting KW. Hmmm... I wonder what the power output of a GPS sat is? Is that classified? Even if it is, if I know it's height I can probably figure it out. Estimate at least. Sorry, just thinking out loud. -GH Rasputin Novgorod wrote: --- xaos [EMAIL PROTECTED] wrote: 8-way splitters Make sure it passes DC. Your antenna will need it. Pass the DC from one port and block it from all others. What size, type block? /b __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
