Multiple FM tuners to only one antenna
 

is possible to do this? can some one tell me how I can do it

Multiple FM tuners to only one antenna
 

Stats wrote:
"Is it possible to do this?"
Yes. Emitter, source, or cathode followers may be used, one for each
tuner to isolate the tuners from each other.

All the the bases, gates or grids can be fed from the same antennna
signal. Individual isolated signals are available at the emitters,
sources, or cathodes for the tuners.

Radio Shack or some similar supplier likely has a device such as this
with one input and multiple outputs available off the shelf that works
in the VHF TV and FM broadcast bands. Unlike the followers, it may give
you 10 dB or 20 dB gain on each output.

Best regards, Richard Harrison, KB5WZI

Multiple FM tuners to only one antenna
 

In message , Richard
Harrison writes
Stats wrote:
"Is it possible to do this?"
Yes. Emitter, source, or cathode followers may be used, one for each
tuner to isolate the tuners from each other.

All the the bases, gates or grids can be fed from the same antennna
signal. Individual isolated signals are available at the emitters,
sources, or cathodes for the tuners.
Surely a bit too complicated? The simplest way is to use a passive
multi-way CATV splitter. With a 2-way you lose 3.5dB, 4-way 7dB, 8-way
10.5dB. If necessary, precede with a preamp. The isolation performance
will be more than adequate for your purpose.

Radio Shack or some similar supplier likely has a device such as this
with one input and multiple outputs available off the shelf that works
in the VHF TV and FM broadcast bands. Unlike the followers, it may give
you 10 dB or 20 dB gain on each output.
As I describe, a preamp plus splitter. I don't know what Radio Shack
stock, but in the UK, you can buy 40 to 860 MHz wideband units at
several DIY stores. Gains per output range from 0 to around 10dB.
Outputs 2 to 6. The internal splitting may simply use resistors (and not
use the low-loss ferrites used in CATV splitters), but they work fine.
Some have separate diplexed inputs for TV and FM. Cost $30 to $50.

Ian.
--

Multiple FM tuners to only one antenna
 

Ian Jackson wrote:
As I describe, a preamp plus splitter. I don't know what Radio Shack
stock, but in the UK, you can buy 40 to 860 MHz wideband units at
several DIY stores. Gains per output range from 0 to around 10dB.
Outputs 2 to 6. The internal splitting may simply use resistors (and not
use the low-loss ferrites used in CATV splitters), but they work fine.
Some have separate diplexed inputs for TV and FM. Cost $30 to $50.

It may be more difficult than you think. The U.K. TV system went to
UHF only a long time ago. Amplifiers for TV antennas may be designed
to filter out VHF signals to prevent interference. Ones designed
for splitting cable TV would be wideband. It pays to ask.

I tried to look up Radio Shack's web site in the U.K. (or Tandy's),
but could not find it.

Geoff.


--
Geoffrey S. Mendelson, Jerusalem, Israel N3OWJ/4X1GM
IL Voice: (07)-7424-1667 U.S. Voice: 1-215-821-1838
Visit my 'blog at http://geoffstechno.livejournal.com/

Multiple FM tuners to only one antenna
 

In message , Geoffrey S.
Mendelson writes
Ian Jackson wrote:
As I describe, a preamp plus splitter. I don't know what Radio Shack
stock, but in the UK, you can buy 40 to 860 MHz wideband units at
several DIY stores. Gains per output range from 0 to around 10dB.
Outputs 2 to 6. The internal splitting may simply use resistors (and not
use the low-loss ferrites used in CATV splitters), but they work fine.
Some have separate diplexed inputs for TV and FM. Cost $30 to $50.

It may be more difficult than you think. The U.K. TV system went to
UHF only a long time ago. Amplifiers for TV antennas may be designed
to filter out VHF signals to prevent interference. Ones designed
for splitting cable TV would be wideband. It pays to ask.

I tried to look up Radio Shack's web site in the U.K. (or Tandy's),
but could not find it.

The OP appears to be in Guatemala, so I don't know what will be readily
available from local DIY and electrical stores. However, a search on
"radio shack"+FM+TV+amplifier
brings up lots of websites. These show examples of the type of equipment
which should be suitable.

The following site shows amplifiers and splitters which should be
suitable:
http://www.dennysantennaservice.com/1237607.html

Something like Radio Shack Catalog # 15-2506 should be OK. It does not
say it covers the FM band, but I expect that it does.
http://www.radioshack.com/product/in...entPage=search

Or there are these:
http://www.radioshack.com/search/ind...p litter&sr=1

Here is a list of RS model numbers (you may have to re-flow this link):
http://72.30.186.56/search/cache?p=%...TF-8&fr=yfp-t-
501&x=wrt&meta=vc%3D&u=support.radioshack.com/productinfo/productresults.asp%3Fname%3Dvideo_accessories%26id %3D006001002&w=%
22radio+shack%22+fm+tv+%22distribution+amplifier%2 2&d=HymMAurnO7JO&icp=1&.intl=uk

Ian.
--

Multiple FM tuners to only one antenna
 

wrote in message
ps.com...
is possible to do this? can some one tell me how I can do it


TV distribution amp

Multiple FM tuners to only one antenna
 

"Jimmie D" wrote in message
...

wrote in message
ps.com...
is possible to do this? can some one tell me how I can do it


TV distribution amp

Just be sure it does not have an FM rejection filter. Also DO NOT use a CATV
amplifier. They are not meant to be used with microvolt level signals like
you get off an antenna. I tried it with a TV antenna, and it made it worse.

Tam

Multiple FM tuners to only one antenna
 

On Jun 24, 3:01 pm, wrote:
is possible to do this? can some one tell me how I can do it

TKS a lot to everyone ill choose the splitter solution and it works
really great... TKS again and have a lot of Fun