[ARC5] Receiver Dials

[Brian Clarke]

Different experience here. I've only seen plastic dials on Rxs and only 
metal on Txs. Not seen a brass dial, but have seen damaged dials that 
behaved like plated copper.

I don't think corrosion came into the design equation till some equipments 
had down-sloping connectors on front panels. And I've seen plenty of 
'rusted' aluminium connectors, covers and chasses.

73 de Brian, VK2GCE.