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handheld radio

PostPosted: Thu Nov 03, 2016 5:59 pm
by tegsy1
Hi All, I am looking for a decent 2m 70cms handheld radio. I want to use it in my works van,I have been using the boafeng masuto but the interference is too bad. I cant earth bond any part of the van because it is a lease hire van. I have been using the rubber duck on the boafeng and also have had a magmount connected but same results.Any help or suggestions appreciated.

Re: handheld radio

PostPosted: Thu Nov 03, 2016 7:22 pm
by G4RMT
You sure the mag mount is 100%? Most nowadays have no electrical connection to the base at all - so should always perform better than an internal rubber duck?

What kind of interference are you getting? Electrical hash, or processor noise from the vehicle computers? Does it get better if you connect the shield of the coax to something grounded? Plenty of places to get a chassis connection usually that take no fiddling or destructive action. 12VDC connector, loosening a seat mount bolt and loads of places. In my Vivaro van, under the centre pull off panel are loads of available metalwork places to attach a cable. However - even just floating on it;s own battery power, no noise issues on external magmounts. In fact, I removed the mag mount and drilled a hole - made no difference I could tell to the performance.

Re: handheld radio

PostPosted: Thu Nov 03, 2016 11:24 pm
by m0lsx
How are you powering the handheld? I assume if it's on a 12 volt power supply that you have tried the radio on it's batteries.
If the issue is the electrical noise in the vehicle, then the chances are that hanging radios will make little or difference.
Is the noise the same if the engine is running or if the ignition is simply switched on? Lots of systems come on when the ignition is switched on, others only when the engine is running.

Re: handheld radio

PostPosted: Fri Nov 04, 2016 5:43 pm
by tegsy1
Hi All,thanks for the replies,I am running the handheld on its own battery, the noise sounds like when you light a sparkler,if you know what I mean, its fine when the engine is off, the voice breaks up also when the engine is running ,the voice breaks up,comes on then off repeatedly, I have heard loads of hams on mobiles in vehicles and they are clear as a bell.

Re: handheld radio

PostPosted: Fri Nov 04, 2016 7:06 pm
by G4RMT
Does it do it on the rubber aerial fixed to the radio, or only on the external mag mount? Any chance we can hear it? Doesn't quite sound right?

Re: handheld radio

PostPosted: Fri Nov 04, 2016 9:36 pm
by tegsy1
Thanks for the reply,yes it does it on the rubber duck and the magmount.

Re: handheld radio

PostPosted: Sat Nov 05, 2016 12:03 am
by m0lsx
What is the vehicle. You say a van, but does it have anything extra added a reefer, data screen, anything? I only ask because as a HGV & PSV driver I know I could not operate on a bus, with things like the destination board, ticket machines & those GPS things that let everyone know how long before the next bus.
Have you tried using the handheld to track down the noise? If not see if it can receive the noise with the antenna moved to attenuate it as much as possible. Then go hunting for the maximum noise. Just poke your radio around the cab & engine bay & see if you can find it.
If the handy does not work, try a AM Medium Wave radio. They are a standard tool for mobile QRM hunting. Tune the radio between stations & see what you can find.

Re: handheld radio

PostPosted: Sat Nov 05, 2016 9:32 am
by G4RMT
I've got a Chinese DVD/Internet/CD/USB/Ipod/gps gizmo in my van - and every now and then it goes mad and wipes out radio 2 and my business radio. Have you got anything similar?

Re: handheld radio

PostPosted: Sat Nov 05, 2016 2:33 pm
by tegsy1
Hi Thanks for the reply, I drive a transit van, the van is equipped with a tracking device inside the dash, but when I tried the magmount the noise was exactly the same so its got to be something in the cab itself.

Re: handheld radio

PostPosted: Sat Nov 05, 2016 2:34 pm
by tegsy1
just to add, I am using the boafeng misuta.