Have searched through this forum, but I am still looking for some answers on the above subject.
My mates and I used to have the Intaride systems, but gradually progressed to Motorola GP360 radios on the PMR frequencies, through Autocom systems. The radios are ex Police stock and with a 4 watt output work really well. But the problem most of us have is the background noise/interference. I say most of us, because one or two seem to have no trouble at all.
Naturally, we all use different bikes.
I seemed to be in that latter catagory, with little background noise, until a few weeks ago when my transmissions became terrible with a high pitched sound drowning out the words.
Up until now, I ran my Autocom and radio power leads through a Centech auxilliary fusebox.
I tried going back to basics and a direct feed and earth from the battery, and its is clear until the engine is running. I tried cleaning all interface connections, and replaced the lead that connects the radio to the Autocom system, as it seemed loose at the radio connection end. None of this has helped, as the noise does not rise with the revs, but is constant.
My question really are;
Does some kind of shielded power cable, ie a kinda co-axial cable between the battery and the radio make any difference?
Also, does anyone bother with a noise suppressor nowadays - they seem awful scarce on the ground if they are necessary for bike comms?
We spoke with Autocom, and they suggested that we need another part, number 2437, a relay of sorts which takes its feed from the power source, ie the tail light, before supplying power to the radio. They were a bit cagey on whether this would solve our background interference noise.
This really is frustrating, especially when you watch bikers on telly, such as Hairy Bikers and McGregor/Boorman having crystal clear comms.
I'd be really interested to hear if anyone has solved this problem.
My mates and I used to have the Intaride systems, but gradually progressed to Motorola GP360 radios on the PMR frequencies, through Autocom systems. The radios are ex Police stock and with a 4 watt output work really well. But the problem most of us have is the background noise/interference. I say most of us, because one or two seem to have no trouble at all.
Naturally, we all use different bikes.
I seemed to be in that latter catagory, with little background noise, until a few weeks ago when my transmissions became terrible with a high pitched sound drowning out the words.
Up until now, I ran my Autocom and radio power leads through a Centech auxilliary fusebox.
I tried going back to basics and a direct feed and earth from the battery, and its is clear until the engine is running. I tried cleaning all interface connections, and replaced the lead that connects the radio to the Autocom system, as it seemed loose at the radio connection end. None of this has helped, as the noise does not rise with the revs, but is constant.
My question really are;
Does some kind of shielded power cable, ie a kinda co-axial cable between the battery and the radio make any difference?
Also, does anyone bother with a noise suppressor nowadays - they seem awful scarce on the ground if they are necessary for bike comms?
We spoke with Autocom, and they suggested that we need another part, number 2437, a relay of sorts which takes its feed from the power source, ie the tail light, before supplying power to the radio. They were a bit cagey on whether this would solve our background interference noise.
This really is frustrating, especially when you watch bikers on telly, such as Hairy Bikers and McGregor/Boorman having crystal clear comms.
I'd be really interested to hear if anyone has solved this problem.
