Project:Mast SCAM-12
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The London Hackspace has a 12 metre SCAM-12 dismountable mast currently living in the yard. It's the easier, smaller radio-centric of its bigger older sibling, the Clark 63/100Trailer Mast.
(this page work in progress - JJ)
Specifications
| Clark SCAM-12 Mast Specifications | |
|---|---|
| Make | Clark Masts |
| Model | SCAM-12 Mast (Modern Commercial Variant is the WT 12-8 TP) |
| Age | Manufactured during the 1980s/90s |
| Extended Height | 12m (36') |
| Antenna Attachment | 40mm socket |
| Maximum Recommended Headload | 35 kgs |
| Maximum Safe Windspeed | 144 km/hr if guyed |
| Picket Radius | 6.9 metres |
| Time to Extend | 180 seconds with no headload |
| Time to Retract | 75 seconds |
Work Required
As at Sep 2015
Things to procure
- 8 x Fischer Bolts for 4 mounting legs - 12mm (14?) [also for base]
- Stub for top of mast (39 inner perhaps 40, 57 outer)
- 20+ metres of feeder cable (UHF and HF feeders)
- Post-level (bubble indicator)
- LED strips and Swarovski crystals for decorations
- Pneumatic stuff:
- hoses
- connectors
- electric compressor
Things to do
- Fit legs to mast and fit bolts to ground
- Balance mast for easy erection
- run cable between mast top (fully erect) and shack
References / External Links
- Paul Sladen's SCAM mast info website - Note that the SCAM mast is a cousin of our WT8 mast in the Clark 63/100 trailer assembly.
- 2E0IJK's SCAM12 Repair Site - Mast refurbishment notes plus a piston reassembly video
- Clark Masts Historical site
- Clark Masts Official Website
- SV2GWY's SCAM12 antenna setup - He shows how to apply the air pressure, lock/unlock tower segments, etc.