Affichage des articles dont le libellé est Is this simulcast distortion or something else?. Afficher tous les articles
Affichage des articles dont le libellé est Is this simulcast distortion or something else?. Afficher tous les articles

lundi 26 janvier 2015

Is this simulcast distortion or something else?

To start, I have read about the simulcast distortion and think that MAY be my problem, but I'm not 100% sure so I would like some other opinions, and if this is in the wrong forum, please feel free to move it to the correct one.



Anyway, I have a RS Pro-651 handheld and I purchased the cheap 1/4 wave ground plane antenna from RS and put it in my attic. I ran an RG6 from said antenna to my computer room where I use the scanner most. When using this antenna I get what I would describe as digital distortion (choppy, broken up transmissions that cut in and out). This seems to happen maybe 50% of the time, so it isn't constant....one transmission may be garbled like described, and the next may be crystal clear. So far, I have only noticed this on the local P25 system, which is a 5 site simulcast system. When switching to the WX frequencies to test the antenna receptions, I know I am getting better reception vs the rubber duck. I also seem to get better reception of the statewide P25 system, which only has one site online in my area currently.

Before I put the antenna in the attic, I had it sitting in the room with me, with a short RG6 jumper and it seemed to work fine.

When I put the rubber duck on, I don't get the distortion and seem to get all the transmissions fine, but I also notice a weaker signal on the other system.



One other thing I noticed is on my scanner it will tell me if the TG being received is digital or analog and all I have programmed are digital systems, but when getting the distortion, the notification will flip between digital and analog, which again makes me think it is something in the decoder and a simulcast problem with the higher gain antenna (vs rubber duck).



Thoughts?





Is this simulcast distortion or something else?