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I a Magnum Dynalab FM tuner the Etude have very large roof aerial

Everything works very well apart from BBC Radio 4 93.5

When ever I have that channel on, there is a hum from the speakers


Is there an electrical fault, that could cause it?


--
Dave xxxx
www.davewhitter.myby.co.uk

Music is Art - Audio is Engineering
Steam is Fun

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"Dave xxxxx" said:

I a Magnum Dynalab FM tuner the Etude have very large roof aerial
Everything works very well apart from BBC Radio 4 93.5
When ever I have that channel on, there is a hum from the speakers
Is there an electrical fault, that could cause it?

Try to disconnect the ground lead to the mains.

Music is Art - Audio is Engineering

Thou art a Pinkerton worshipper?

Steam is Fun

Until it comes out of your ears.

--
Sander deWaal
"SOA of a KT88? Sufficient."

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Sander deWaal wrote:
"Dave xxxxx" said:

I a Magnum Dynalab FM tuner the Etude have very large roof aerial
Everything works very well apart from BBC Radio 4 93.5
When ever I have that channel on, there is a hum from the speakers
Is there an electrical fault, that could cause it?

Try to disconnect the ground lead to the mains.

do you mean the one in the power lead?



Music is Art - Audio is Engineering

Thou art a Pinkerton worshipper?
:-) NO !



Steam is Fun

Until it comes out of your ears.

Its ok coming from my trains
http://www.davewhitter.pwp.blueyonder.co.uk/trains.htm

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Sander deWaal wrote:

I a Magnum Dynalab FM tuner the Etude have very large roof aerial
Everything works very well apart from BBC Radio 4 93.5
When ever I have that channel on, there is a hum from the speakers
Is there an electrical fault, that could cause it?

Try to disconnect the ground lead to the mains.

What makes you think it's a mains or earthing problem if it only happens on
one station?


--
Wally
www.artbywally.com
www.wally.myby.co.uk

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Dave xxxxx wrote:
I a Magnum Dynalab FM tuner the Etude have very large roof aerial

Everything works very well apart from BBC Radio 4 93.5

How does it sound on 95.8?


--
Wally
www.artbywally.com
www.wally.myby.co.uk

Not Valves but you might be able to help tuner question
 

Wally wrote:
Dave xxxxx wrote:
I a Magnum Dynalab FM tuner the Etude have very large roof aerial

Everything works very well apart from BBC Radio 4 93.5

How does it sound on 95.8?

Just looked on BBC site see no Radio 4 on 95.8
http://www.bbc.co.uk/reception/radio....shtml#Wrotham

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Dave xxxxx wrote:

How does it sound on 95.8?

Just looked on BBC site see no Radio 4 on 95.8

Ah well - it was just a guess. I get it on 95.8 here (near Edinburgh).


--
Wally
www.artbywally.com
www.wally.myby.co.uk

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Wally wrote:
Dave xxxxx wrote:

How does it sound on 95.8?

Just looked on BBC site see no Radio 4 on 95.8

Ah well - it was just a guess. I get it on 95.8 here (near Edinburgh).


Found you 95.8 Blackhill transmitter

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In article , Dave
xxxxx writes
I a Magnum Dynalab FM tuner the Etude have very large roof aerial

Everything works very well apart from BBC Radio 4 93.5

When ever I have that channel on, there is a hum from the speakers


Is there an electrical fault, that could cause it?



I presume that you are using the Wrotham radio 4 transmitter?. It is
possible for a transmitter to have a fault on it for some while
especially if its a relay station out in the sticks, but a transmitter
in earshot of Broadcasting hice isn't likely to be duff for long!.

Are you certain that radio 3 hasn't got the same hum?.

I cant say I've heard of a tuner doing a similar fault like this on
different frequencies.

Mains hum loops are possible, and I've had one here as the aerial in
question is very well earthed for lightning protection, and that set up
a good 'um loop.

Question.. is there any fluorescent lighting close by?.

Other than that difficult to point out the cause, is it possible you can
post up an MP3 sample of the hum and quite bits of R3 and R4?....

--
Tony Sayer

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tony sayer wrote:
In article , Dave
xxxxx writes
I a Magnum Dynalab FM tuner the Etude have very large roof aerial

Everything works very well apart from BBC Radio 4 93.5

When ever I have that channel on, there is a hum from the speakers


Is there an electrical fault, that could cause it?



I presume that you are using the Wrotham radio 4 transmitter?. It is
possible for a transmitter to have a fault on it for some while
especially if its a relay station out in the sticks, but a transmitter
in earshot of Broadcasting hice isn't likely to be duff for long!.

Are you certain that radio 3 hasn't got the same hum?.

I cant say I've heard of a tuner doing a similar fault like this on
different frequencies.

Mains hum loops are possible, and I've had one here as the aerial in
question is very well earthed for lightning protection, and that set
up a good 'um loop.

Question.. is there any fluorescent lighting close by?.

Other than that difficult to point out the cause, is it possible you
can post up an MP3 sample of the hum and quite bits of R3 and R4?....


radio 3 has no hum :-(

no fluorescent lights in house at all