power mate

[samuell]

Has anyone installed a power mate regulator with a rotax engine,i'm haveing a lot of noise problems with uhf radio in a savannah xl.I'm hoping this will fix the problem.Anyone that has put one in, i'd love to hear if it helped.

 

Cheers sam

 

 

[bones]

Save yourself the trouble, go to your nearest "dick smith" type store, somewhere that works with computers, and buy a bout 5 Ferrite(sp) resistors, these are the black lumps on all your computer cables, should cost about $2 each, put them on every wire in and out of the radio, they just clip around the wires,,, should be problem fixed.

 

Took me about 18 months of taking radios out sending them away, only to be told nothing wrong with them, i was having massive mic feed back, the easiest cheapest fix i ever did find, i put them on every radio i fit now, even they dont need them.

 

PS i have nothing to do with Dick Smith stores, or any computer store that sells this product.

 

 

[icebob]

Hi Sam,

 

bones is correct but be careful DS also sells the incorrect ferrites, you need the ones for vhf/uhf radios. Some are marked SP(correct ones) the others are marked S (INCORRECT).

 

There are ones that clip on and you need to loop the wire through three or four turns and others that just clip over make sure you get all of the same type unless you use a remote GPS reciever then use the one you put the loops through.

 

Have them all as close to the radio as you can.

 

Bob.

 

 

[samuell]

Thank you for your advice,alot of my trouble is noise in transmisson,do you think they will help with this problem as well.there seems to be three types of noise on transmission and sounds muffled.

 

cheers Sam

 

 

[bones]

Yeah i would think so, the noise is all feed back of different types, left over bits of power running a muc in your radio and wiring, these things stop them, cant say for sure, but for 10 or 20 bucks it be my first try anyways.

 

 

[Dieselten]

Another form of noise, usually manifest as a "squealing" sound behind the tramsmitted audio, is RF feedback getting into the audio circuits in either the radio or the intercom - or both.

 

The cure is to get the antenna as far away from the radio and intercom units and their associated wiring as possible. Add ferrites to taste. Filter capacitors across the main electrical buss, even inline chokes if necessary. Noise can and will get in wherever it can. Tracking down the sources and fixing it can be a time-consuming task.

 

 

[Guest Nelson Smith]

Sorry to disagree with the Ferrites idea but we did extensive tests with the ferrites and found that all they did was shift the SQUEALING up or down the frequency range.The cure was better headsets e.g. David Clarks, Lightspeed Zulus, Or BOSE. The Bose were by far the best to cure the transmit squealing. Give Altronics and the cheaper headsets away to save yourself headaches.

 

Nelson

 

 

[bones]

Sorry to disagree with the Ferrites idea but we did extensive tests with the ferrites and found that all they did was shift the SQUEALING up or down the frequency range.The cure was better headsets e.g. David Clarks, Lightspeed Zulus, Or BOSE. The Bose were by far the best to cure the transmit squealing. Give Altronics and the cheaper headsets away to save yourself headaches.Nelson

Sorry to disagree with you but this was using the top of the range bose head sets :)

 

 

[eightyknots]

If it is a kind of squealing sound, it could be the alternator too. This squealing can be fixed with an inexpensive capacitor in many instances.

 

 

[Guest ozzie]

ignition noise can be a ticking as the faulty componet receives the current to fire the plug. poor lead sheilding or cracked insulator/caps can do it. A continuous noise that increases with RPM may be alternator. Worn slip rings/ brushes can be the source. One solution to 'noise' can be insulating the alt from the engine and wire it 'above earth' do the same with the avionics. Isolate the equipment from it's metal mounts and run all the earth leads straight to the battery.

 

 

[Harthy]

All of the above ideas are good to check out. I had problems with noise in my headsets in my Thruster with a 582 for a long period of time, and tried the above mentioned solutions with little improvement. I was told about the power mate regulator and dodged around it for some time as money was not plentiful. In the end I rang the gentleman, Cluas I think his name is. Lucky for me I live in south QLD and when I was in the Brisbane area one time I dropped in to see him. After talking to him I decided to purchase one. It turned out to be be a good decision.

 

I no longer own my Thruster, and I won't try and sell what the Power Mate does. But give him a call. Great product!!!

 

Harthy