This is a common problem even with commercial stations that use synchronous repeaters (which is really what we're doing with multiple Part-15 transmitters.) I think it's a problem that we have to live with. I think you might be able to space them to minimize the problem. The Rangemaster can be synchronized either by cabling them together or by using an GPS add-on.
If you link your transmitters through Internet streaming, each transmitter's audio will be out of sync with the others. This is due to lag in each stream. I thought about this solution to link multiple Part-15 FM transmitters. I may try it out and just live with the lag. You can use what the phone company calls a "dry pair", which is a solid copper point-to-point run. They're often sold as alarm circuits as some alarm systems needed a DC run from the alarm to the monitoring point. But, that's an expensive solution, and these runs are getting harder to find as technology changes.
I have not used any of the license-free STL's, but look to be a good solution if you have power at both ends and a clear path to the transmitter site.
> I was told by a guy who spent a lot of money setting up two
> Rangemasters that having multiple transmitters to cover a
> larger area can be very problematic because anyone driving
> will likely hear the effects of unsynchronized signals. I'm
> using an SSTran and would try to use more of them if I were
> to expand (mainly because I might as well be throwing money
> into a pit any other way), but what is the most effective
> way to prevent the aforementioned problem? I'm considering
> streaming from my main transmitter to the internet and then
> having PCs hooked up the the net just rebroadcast the
> stream, although if one of them had to rebuffer I can see
> how it would become a mess quickly.
>
> As always with part 15
, is there a way to effectively do
> this on the cheap? STLs? Anything else? Thanks.
>
<P ID="signature">______________
Frank
East Hill Radio
Moderator, Community Radio USA, Seattle</P>
