The Bristol 70cms Repeater Group
Click to enlarge image.
The complete repeater comms rack. GB3BS at the top, GB7BS just below.
The rear of the comms cabinet.
GB3BS before it was joined by GB7BS.
The rear of GB7BS (Motorola DR3000).
Under the hood of GB7BS. Viewed from top.
What does what in the logic interface.
Together GB3BS and the logic interface. Shown here in early testing in 2008.
Once all Resistors and diodes were in place, Mat (Who used to do PCB Assembly for a living) covers the components with 'Blue' masking tape. This tape leaves no glue marks on PCB
Under the hood of GB7BS. Viewed from front.
The Custom built logic interface (GB3BS).
The GB3BS RC210 Controller unit (Pre-built).
Starting to 'Board stuff' our spare RC210 controller (Kit form).
Remember to save the off-cuts. You never know when you want to make some links!
Very limmited edition mugs. Thanks to all who bought one and helped boost the groups funds. Remember those who have one, there are only 10 of you in the world with one of these mugs! look after itl
But things to go wrong. Take a look at our sad looking 4 stack antenna. What could have happened?
We had to get a rigging team in to take down the failed antenna and replace it with a brand new one.
Alloy fatigue. The Aluminium simply rotted it was very crumbly to the touch.
Parts recovered from around the tower. And that my friends is why you wear hard hats when working around them!
Legs of components before they are cropped
Mats trusted (And old) cropping tool.
Solder in the parts. Almost looks good! next the IC's
Of course, occasionally even we stop for a cup of Java.
These bits were found around the base of the mast.
The failed antenna was only 14 months old. Thankfully the manufacture accepted a design flaw and replaced the unit Free. Although we still had to pay for the rigging team.
Alloy fatigue. All four elements suffered the same fate.
The Repeater Group was honoured to be presented with the G8HPC trophy for outstanding contribution to amateur radio by the North Bristol Amateur Radio Club (NBARC)