There is a Greek ham who sells a nice, very small, 4 way splitter with amp on eBay. Sorry, no URL handy. It works well, but is L1 only, if that matters. It costs a lot more than a Mini-circuits splitter, but a lot less than a "real" GPS one.
John On Apr 30, 2020, 3:16 AM, at 3:16 AM, Bob kb8tq <[email protected]> wrote: >Hi > >Again, that’s just the candidates pulled out of the first dozen. > >Three port splitters (in general) don’t exist. At least not on the “low >cost” end >of things. You either use a 4 or a set of three 2 ports ( to make a 4 >port). > >Each time you split 2 ways, you “loose” 3 db ( equal power into two >loads). A two way >will be 3 db and a 4 way 6 db. Yes, there is some fraction of a db that >is truly lost and >not just split between the loads. Figure 0.1 db or check the spec sheet >on the Mini >Circuits web site if you really need to be accurate. > >With some shopping ( = going through all 200 or 500 listings), you >should be able to find >something reasonable for < $30 delivered. I’d go for something up >around 8 ports or so. >GPS stuff tends to multiply …. > >Maybe this one if the guy will take a $20 offer: > >https://www.ebay.com/itm/Mini-Circuits-8-Port-IF-Splitter-Combiner-15542-ZB8PD-2/182003853838?epid=1529816498&hash=item2a60466a0e:g:vzcAAOSwqYBWpoFo ><https://www.ebay.com/itm/Mini-Circuits-8-Port-IF-Splitter-Combiner-15542-ZB8PD-2/182003853838?epid=1529816498&hash=item2a60466a0e:g:vzcAAOSwqYBWpoFo> > >It will have 3 db more loss than a 4 way (so a total of 9 db). > >At some point your combo of loss in the splitter, loss in the coax from >the antenna, loss in the cable >from the splitter to the GPS is more than the device can handle. Figure >that you need about 12 db >“left over” even for a fairly good device. People do make GPS amps if >you go to far. > >Bob > > >> On Apr 29, 2020, at 10:06 PM, Frank O'Donnell <[email protected]> >wrote: >> >> On 4/29/20 6:01 PM, Bob kb8tq wrote: >>> Here’s a few: >> >> Bob, thanks very much for the suggestions. >> >> Five of the seven splitters in your list appear to offer a total of >two output ports. What I'm looking for is one that will accommodate >(specifically) three or four ports. >> >> Of the remaining two on the list, this one: >> >>> >https://www.ebay.com/itm/Mini-Circuits-ZN4PD1-63W-S-RF-Power-Splitter-250-6000MHz-Qty-Available-GOOD/133387795141?hash=item1f0e883ac5:g:tdoAAOSwAbxel2o~ ><https://www.ebay.com/itm/Mini-Circuits-ZN4PD1-63W-S-RF-Power-Splitter-250-6000MHz-Qty-Available-GOOD/133387795141?hash=item1f0e883ac5:g:tdoAAOSwAbxel2o~> >> >> has five outputs and costs $50. Probably usable, though I was >wondering if going with additional output ports could increase possible >loss? And also, the price isn't a show-stopper but is a little high for >what I was hoping for. >> >> The other one: >> >>> >https://www.ebay.com/itm/New-Mini-Circuits-ZB6PD-2-S-800-2000-MHz-Power-Splitter/114155096838?hash=item1a942c8b06:g:jNIAAOSwedNedT92 ><https://www.ebay.com/itm/New-Mini-Circuits-ZB6PD-2-S-800-2000-MHz-Power-Splitter/114155096838?hash=item1a942c8b06:g:jNIAAOSwedNedT92> >> >> isn't entirely clear to me. The text says it's a three-port, but I >count four visible connectors that look like output ports, and two more >that might be hiding under caps. This one goes for $19.90. >> >> Given all of that, do either of these two seem like the optimal way >to go if I want to plug in three or four GPSDO's? >> >> Thanks again, >> >> Frank >> >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. > >_______________________________________________ >time-nuts mailing list -- [email protected] >To unsubscribe, go to >http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
