Lots of comments. Indeed it sounds like a great discussion for pizza and beer. The more beer the more lively. Did they bring beer? Fact I have used a 8 way splitter Sat/TV for 5 years now. Port to port loss is something like 16 db or 26 db as I recall. It has dc blocking on all but 1 port built in. The loss was as advertised. The cost was pretty high at $7. To make up for the loss I used a amplifier. A Mar circuit and only enough gain to cover the splitter loss since the single antenna has 30db of gain and feed 1/2" hardline. So if all of things discussed are happening its not at all apparent from the 6 rcvrs on the system. Some old like odetics austrons some newer like 3801s and Tbolt...Plus I never have to hunt for a port for experimenting. There is one catch and this can apply to all splitters some rcvrs need a dc load so that they think they have an antenna. I think about 430 ohms. As I say its been 5 years and it just works. Total investment $10?? Though it doesn't say HP on it. Regards Paul WB8TSL
On Tue, Oct 9, 2012 at 7:14 AM, Robert Atkinson <[email protected]>wrote: > When GPS first started to be fitted to light aircraft it was found that LO > leakage from some VHF navigation recivers blocked the GPS when the NAV was > on certain channels. You can buy a BNC "T" adaptor where the leg of the T > is a 1.5GHz coax stub notch filter. They go on the NAV RX antenna connector. > > Robert G8RPI. > > > ________________________________ > From: gary <[email protected]> > To: [email protected] > Sent: Tuesday, 9 October 2012, 8:51 > Subject: Re: [time-nuts] To use or not to use transmission line splitters > for GPS receivers > > I was wondering about that myself, but my guess is the crosstalk would be > from whatever grunge was coming from the other GPS. Every amplifier has > reverse parameters, so a small amount of the crud (circuitry noise) from > one GPS will reach the other GPS. Not much, but some people are nuts about > time. > > This is a bigger problem with radios, where the locals from one radio can > reach the input to the other radio. > > I was also confused on the notion of a transmission line splitter. Is this > a Wilkinson or something else? > > On 10/9/2012 12:40 AM, Azelio Boriani wrote: > > Crosstalk? With the same signal? > > > > _______________________________________________ > 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.
