Definately nice ways to go. However if this is a hobby then TV RF splitters and satellite LNB IF line amps (LNBs IFs are .9-1.5 Ghz) also work very well. I picked up the line drivers for $2 at a typical old stock store and splitters to 2 Ghz for $1. Measured them and they are pretty good. But the real test is inline and every thing seems to work well. I have 3-4 rcvrs hooked up. Regards Paul WB8TSL
On Thu, Dec 30, 2010 at 10:45 PM, J. L. Trantham <[email protected]> wrote: > Chris, > > There are several Symmetricom splitters available, including 1:2 and 1:4 > that can be had, on occasion, 'on the Bay' that work well with the TBolt, > although I use one of the 1:4 units with a TBolt, a Z3816A, a Z3805A, and > that leaves a 'spare' for any other project I am working on, that requires > both the TBolt and a Z3816A powered on to function normally. The ones I > use > are the 58535A and the 58536A. There are several listed now, including > this > one 350426342961 (no connection to the seller). > > IIRCC, someone on the list had offered some for sale at very reasonable > prices in the past. Perhaps he is 'listening' or you can find him by > searching the archives. > > I have my antenna (like this one 290469118397 no connection to seller > except > a satisfied customer for other items) mounted on the corner of my workshop, > lower than the rest of the house, under some trees (not the best location > by > any means) but out of the way of the lightning here in FL and it feeds the > splitter (no lightning protection) which feeds the receivers and works > well. > I have not performed any 'formal' measurements of the stability of the 10 > MHz or 1 PPS signals though. That's on one of my many 'back burners'. > > Hope this helps and good luck. > > Happy New Year to you and all on the list. Thanks again to all on the list > for all your help to me in the past. > > Joe > > > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Chris Albertson > Sent: Thursday, December 30, 2010 5:26 PM > To: Discussion of precise time and frequency measurement > Subject: [time-nuts] GPS Antenna > > > A few questions about GPS antenna.... > > > 1) I read the Thunderbolt user manual and did not find any meaningful spec > on the antenna except that it is amplified and uses DC power in > the coax. What signal level is the Thunderbolt expecting? oes it > want a 24dB antenna or more or much less? > > 2) I want to feed two GPS units with one roof mounted antenna. I figure > that splitters are just a transformers and will not pass DC to power the > antenna. There must be an easy way around this. > > 3) Do people really run coax straight from a GPS antenna into their house > with no protection from lightening? Maybe a GPS antenna is a small target > compared to a 100 foot wire antenna in Florida > > -- > ===== > Chris Albertson > Redondo Beach, California > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
