I'm a newbie upgrading to a 3GHz scanning system so I'm no looking round for recommedations and feedback on antennas that perform
up to 3GHz. I would rather spend extra for a professional level antenna than go for a cheaper option. The AOR DA5000 looks good
but I'd appreciate any tips before I start shelling out money. I'm currently scanning with a D130 discone which works well but it
only goes up to 1300MHz. Thanks for any advice.

You will be lucky if you pick up ANYTHING worth listening to above 400Mhz
R

There's alot around 400-500 as steve terry said in his reply,
and around 800-1000 there's alot of analogue repeaters,
shortrange stereo wireless/headphone, and cordless phones.

I could also comment on the antenna question,
personally I mainly use the Dressler ARA-2000 active antenna
but a good discone with a low noise preamp would be just as fine.

Preamps are usually required on high frequencies due to signal loss
in the cable, so to overcome the noise you'd use a preamp.
(well, technically you use a line-amp. to overcome the cable loss
and low noise preamp to increase sensitivity)
I'd go with active antennas for any UHF reception.

1GHz (microwave) you mainly use directive antennas,
dish and/or horn or yagi is most common and very effective,
though very narrow band, you won't find anything to cover
1-3GHz, you'd probably not have more than 0.1GHz span
using a helix so you'll need an antenna for every purpose.....

//Greg

(excuse me for improper pronunciation and/or formulation,
I'm not from UK, I'm swedish

"Greg" wrote in message
...
I could also comment on the antenna question,
personally I mainly use the Dressler ARA-2000 active antenna
but a good discone with a low noise preamp would be just as fine.

thanks for your feedback Greg but I see the ARA-2000 only goes up to
2G and the scanner I'm intending to use goes to 3G and I want to be
able to utilise the full range of the scanner.

On Feb 26, 11:49 am, "Greg" wrote:
I'm a newbie upgrading to a 3GHz scanning system so I'm no looking round for recommedations and feedback on antennas that perform
up to 3GHz. I would rather spend extra for a professional level antenna than go for a cheaper option. The AOR DA5000 looks good
but I'd appreciate any tips before I start shelling out money. I'm currently scanning with a D130 discone which works well but it
only goes up to 1300MHz. Thanks for any advice.

You will be lucky if you pick up ANYTHING worth listening to above 400Mhz
R

There's alot around 400-500 as steve terry said in his reply,
and around 800-1000 there's alot of analogue repeaters,
shortrange stereo wireless/headphone, and cordless phones

Also there are point-to-point links above 1000MHz, used between base
stations and hilltop radio sites. You can spot these on masts by the
horizontal plastic tubes pointing outwards, these contain a long Yagi.
The small elements for these wavelengths are more affected by wind &
rain, hence the protective tube.

AFAIK these carry plain FM voice if it's a single-channel link, multi-
channels using subcarriers also exist.

In article
,
"alexander.keys1" wrote:

On Feb 26, 11:49 am, "Greg" wrote:
I'm a newbie upgrading to a 3GHz scanning system so I'm no looking round
for recommedations and feedback on antennas that perform
up to 3GHz. I would rather spend extra for a professional level antenna
than go for a cheaper option. The AOR DA5000 looks good
but I'd appreciate any tips before I start shelling out money. I'm
currently scanning with a D130 discone which works well but it
only goes up to 1300MHz. Thanks for any advice.

You will be lucky if you pick up ANYTHING worth listening to above 400Mhz
R

There's alot around 400-500 as steve terry said in his reply,
and around 800-1000 there's alot of analogue repeaters,
shortrange stereo wireless/headphone, and cordless phones

Also there are point-to-point links above 1000MHz, used between base
stations and hilltop radio sites. You can spot these on masts by the
horizontal plastic tubes pointing outwards, these contain a long Yagi.
The small elements for these wavelengths are more affected by wind &
rain, hence the protective tube.

AFAIK these carry plain FM voice if it's a single-channel link, multi-
channels using subcarriers also exist.

Actually, Most of these antennas you describe are Circularly Polarized,
Helix antennas, inside the RayDomes.

You wrote in
:




Actually, Most of these antennas you describe are Circularly
Polarized, Helix antennas, inside the RayDomes.

I thought it was "radomes", from radar.

--
Percy Picacity