[access-uk] Re: Indoor TV aerial required Aerial
- From: David W Wood <g3yxx@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
- To: access-uk@xxxxxxxxxxxxx
- Date: Wed, 22 Dec 2004 19:21:16 +0000
Robert
the salient point is the 75 ohm input impedance.
Most television aerials which are available on the commercial market
have a matching impedance of this value.
Three further factors need to be taken into account.
1. is your local transmitter horizontally or vertically polarized?
2. in which band are the transmissions made?
3. is the signal strength good enough for your new purchase to receive
a 'loud' enough signal.
All these questions should be answerable by your local independent TV
shop.
Unfortunately, the chains probably won't be able to answer the technical
questions.
David
In message <001a01c4e853$0f540270$9aad2452@Compaq>, Robert Stokes
<restokes@xxxxxxxxxxxxxxxx> writes
>Hi Folks,
>
>I've purchased a USB 2.0 TV Box. Can anyone recommend a suitable aerial to
>match the following specification?
>
>TV : 75 ohm coaxial TV Antenna/Cable input
>
>Analog video in : One S-video and one composite video input
>
>Audio in :Two L/R RCA audio input
>
>Audio output: in XP audio go through USB, in Win2000 audio through
>
>Sound card,
>
>Video system : NTSC, PAL, SECAM multi system support
>
>Motion capture : MPG1/2/4 and AVI format support
>
>Still image capture : 720x576(PAL) and 720x480(NTSC) BMP/JPG/TIF/
>
>PCX/TGA file format support
>
>. Performance : Up to 25 fps at 720x576 for PAL, 30 fps at 720x480 for NTSC
>
>. Power Source : 5VDC, 450mA(max) through USB port, no need power adapter
>
>
>Best.
>
>Robert.
>
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--
David W Wood
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