[time-nuts] GPS antenna??

Robert Atkinson robert8rpi at yahoo.co.uk
Wed Apr 10 02:43:22 EDT 2013


Hi Rob,
See my earlier post on using repeaters / re-radiators in the UK. Ofcom are insitituting a "light" licencing scheme for GPS / GNSS repeaters. The "transmit" antenna must be inside and the licence fee is £75. No mention that I've seen of type approval but they should of course meet CE requirements. Connecting an active and passive antenna  back to back (with a bias tee or inline amp) is illegal in the UK unless you get a licence from Ofcom first. A quick seach on Ofcon GPS repeaters will bring up a bunch of references.
 
Robert G8RPI.




________________________________
From: Rob Kimberley <robkimberley at btinternet.com>
To: 'Tom Van Baak' <tvb at leapsecond.com>; 'Discussion of precise time and frequency measurement' <time-nuts at febo.com> 
Sent: Tuesday, 9 April 2013, 12:51
Subject: Re: [time-nuts] GPS antenna??

Unfortunately, (I think this is still valid in the UK), we are not allowed
to use GPS re-radiators. I need to check latest rules & regs.
Rob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Tom Van Baak
Sent: 08 April 2013 22:12
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] GPS antenna??

Alan,

Google for words like GPS re-radiator or GPS repeater. There are also units
on eBay. If not to buy, at least to study examples.

The one I have is made by www.gpssource.com but it seems you could build one
yourself. It's easy to test by looking at your indoor SV count and reception
levels. With patch antennae you don't have to worry about RHCP issues,
right?

/tvb


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