The Auto-Sleeper Motorhome Owners Forum (ASOF)
Would you like to react to this message? Create an account in a few clicks or log in to continue.

Odd signal issue

Go down

Odd signal issue Empty Odd signal issue

Post by Askit on Wed 30 Sep - 19:42

Something a bit odd is happening, not for the first time, with our TV signal. We're on site with the TV connected to the external aerial via one of the aerial sockets and getting a fairly poor but acceptable signal with 20+ channels. The teleplus is set on vertical, which is needed locally to get a signal. The odd bit is, if either of us move up to the back of the van we lose the signal. Seems to be illogical but we've tested it over and over again and it keeps happening. Does anyone have an idea of how or why this occurs?


Thank you in advance to all those who want to suggest us not moving to the back if the van  snigger  

_________________
Tony
Askit
Askit
Donator
Donator

Male

Posts : 2573
Joined : 2015-05-16
Member Age : 71
Location : West of Scotland
Auto-Sleeper : Neuvo EK LP
Vehicle Year : 2015

Back to top Go down

Odd signal issue Empty Re: Odd signal issue

Post by modelman on Wed 30 Sep - 19:48

Sounds a bit like your 'bodies' are acting like part of the antenna,  similar to the old ign-key to the head syndrome! hugegrins

_________________
I DO have to grow old, I DO NOT have to grow up!
modelman
modelman
Donator
Donator

Male

Posts : 5237
Joined : 2011-09-16
Member Age : 74
Location : Barnsley,S/Yorks
Auto-Sleeper : Amethyst
Vehicle Year : 2003

http://www.modelslipway.com

Back to top Go down

Odd signal issue Empty Re: Odd signal issue

Post by roli on Wed 30 Sep - 20:59

We get interference on the TV picture if Liz walks past it, I dont seem to affect it.   Not an issue at the moment TV is opened up on the bench at the moment has an iffy joint on the DC input socket
roli
roli
Moderator
Moderator

Male

Posts : 8913
Joined : 2011-03-04
Location : N.West
Auto-Sleeper : Warwick Duo
Vehicle Year : 2016

Back to top Go down

Odd signal issue Empty Re: Odd signal issue

Post by brodco on Thu 1 Oct - 8:51

Hi wave

You’re a great tub of fat and water hugegrins hugegrins hugegrins hugegrins
 
Not meant an insult but as far as RF is concerned it’s true. As such you are good absorber of radio signals.

Several possible reasons but probably:
 
In a good signal area you are getting the signal direct from the transmitter along the direction of the aerial. You may also get a proportion of the signal reflected from the surroundings, but this proportion of the signal is very small and a good aerial will tend to reject them.
 
In a poor signal area you may get little or no signal from the direct line of the transmitter and the aerial is receiving mainly (or only) the reflections. There can be multiple reflections coming in from different directions. When you move around the van you absorb some of the signals and change this multi path reception to the point where the signal drops below the minimum needed by the receiver.
 
Incidentally this is one of those weird situations when a omnidirectional (flying saucer type) aerial may out perform a higher gain directional.
 
Funny stuff RF
brodco
brodco
Member
Member

Male

Posts : 1046
Joined : 2012-07-30
Member Age : 65
Location : Worthing
Auto-Sleeper : Duetto
Vehicle Year : 1997

https://www.eurotherm.com/en/eurotherm-products/

Back to top Go down

Odd signal issue Empty Re: Odd signal issue

Post by Askit on Thu 1 Oct - 15:07

Thanks, that makes complete sense. We've had it before but this is the first time it was obvious and we could repeat the signal blocking. I was wondering about making myself a tinfoil suit but perhaps that's going too far  hugegrins We've moved site and getting 100+ channels so it's not a problem any longer.

_________________
Tony
Askit
Askit
Donator
Donator

Male

Posts : 2573
Joined : 2015-05-16
Member Age : 71
Location : West of Scotland
Auto-Sleeper : Neuvo EK LP
Vehicle Year : 2015

Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum