The Great Barr Repeater
GB3GB RB12
Tx 433.300
mhz Rx 434.900 mhz
Ctcss 67 hz RMG Tone A
GB3GB RB12 433.30 434.90 IO92BN SP065965 LAT 52.56629399 LONG -1.905523042
GB3GB came on air at 21:15 on the 11th Sept 1997
form this site at Doe Bank Lane, Streetly, West Midland.
I had being looking after a CBS repeater for an engineering company on this
site.
When I had the idea of putting a Ham Repeater on there.
Talking to G8SSL of the RMG he offered to sort the paper work side out for me.
So off I went I exchanged an UHF Zycomm FM5016 for a Tait 345 Base station.
Ordered the G1SLE Mk1 repeater
controller and a Procom duplexer
from CTS.
I had used this duplexer on GB3CB in the past after
hearing about them from the GB3EH
group.
But when the one came for GB it did not work right! CTS had it back saying that
their was a fault with them!
But they sent me a Sinclair one at no
extra cost for GB. This Duplexer is fantastic sorry can't remember model number.
The Controller Sends a ID every 5 mins (I was going to change this after a month
or so to 10 or 15 mins but had no reason to go to site after GB started service)
without PL (ctcss) and Acknowledgement of W(weak), I(intermediate), or S(strong)
at the end of an over.
Access is best by PL 67Hz which get a high pitched acknowledgement signal or
1750 Hz tone burst which will get the lower pitched acknowledgment signal. Sorry
can't tell you the timeout time as the moment I think its 5 mins.
The aerial is a four stack dipole system which gives 3db gain and Omni coverage.
A veiw from the south side
The lower 4 stack on the left is GB3GBs aerial.
The site was re-engineered around 2003 from the mess of aerials on the telegraph
pole and chicken feed silo by CarTel
who are currently running the site and pay the rent Thanks
The Duplexer that did't work on GB.
