mica
New member
We get interference on our VHF Radio if we use it whilst the fridge is on. Does anyone have a remedy for this please?
Many thanks,
MICA
<hr width=100% size=1>MICA
Many thanks,
MICA
<hr width=100% size=1>MICA
VHF Radio Interference
- Thread starter mica
- Start date
Rigger
Member
There was a long thread on this 3-4 days ago. Try looking there,it helped me!
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Birdseye
Well-known member
Nobody can give you a failsafe remedy since the cause could be a number of things depending on the details of the equipment / installation.
Instead the procedure is to first of all check and re-make if necessary all connections to the radio. The interference will most likely be getting in, so to speak, through the 12v power feed or the aerial. If you re-make these connections you may well get rid of the problem.
If it persists, then try using a "ferrite" on the power leads of the radio. This is a tube of ferrite - you can buy them from Maplins - which increases the impedance of the feed wires and reduces transmission of alternating currents. You can achieve the same result by oputting a large condensor between the 12 v feed wires to the fridge - in this case any ac (but not the dc feed) shorts across the feed wires and goes nowhere.
make sure that the 12v feed to the radio comes from the battery ie does not come off the wires to the fridge or vice versa. Batteries smooth out these sort of rogue signals.
The last resort is the aerial itself, making sure that the outer screen is well connected at both ends, and that it has a decent coverage ie it covers a high percentage of the inner, and isnt something nasty like old TV coax.
If none of the above works, then you need an engineer to look at your particular installation.
<hr width=100% size=1>this post is a personal opinion, and you should not base your actions on it.
Instead the procedure is to first of all check and re-make if necessary all connections to the radio. The interference will most likely be getting in, so to speak, through the 12v power feed or the aerial. If you re-make these connections you may well get rid of the problem.
If it persists, then try using a "ferrite" on the power leads of the radio. This is a tube of ferrite - you can buy them from Maplins - which increases the impedance of the feed wires and reduces transmission of alternating currents. You can achieve the same result by oputting a large condensor between the 12 v feed wires to the fridge - in this case any ac (but not the dc feed) shorts across the feed wires and goes nowhere.
make sure that the 12v feed to the radio comes from the battery ie does not come off the wires to the fridge or vice versa. Batteries smooth out these sort of rogue signals.
The last resort is the aerial itself, making sure that the outer screen is well connected at both ends, and that it has a decent coverage ie it covers a high percentage of the inner, and isnt something nasty like old TV coax.
If none of the above works, then you need an engineer to look at your particular installation.
<hr width=100% size=1>this post is a personal opinion, and you should not base your actions on it.
bruce
New member
would also check/clean ground on fridge, or add extra one. also separate ground from fridge cabinet to ground other than ground used for radio, etc.
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