Re: 10 ghz lash up test
On a perhaps more general note, and with the condensation sub-thread in mind, is it considered bad or good practice (nowadays) to incorporate a breather hole at the lowest point of the sort of enclosure and application being discussed here? I seem to recall that the feed boot for mk1/mk2 driven elements (coax entry) on F9FT antennas had something like this...
From: G3XDY g3xdy@... [ukmicrowaves]
Sent: Mon, 16 Mar 2015 16:30
Subject: Fwd: Re: [ukmicrowaves] 10 ghz lash up test
Does the box have a rubber sealing gasket around the perimeter? If so it should be reasonably easy to mount a small aluminium plate on the box using the holes outside the seal area and put a 50mm exhaust clamp (Halfords etc) on the plate to clamp it to the mast.
If its a non-sealed box you will need to take care to make it weatherproof using non-corrosive silicone sealant, including all the mounting screws. Water will sneak in otherwise.
If you can mount it with connectors facing down that will help. If not, then use rubber gasketed bulkhead mounting connectors to prevent water getting in.
You can use UT141/RG402 as feeder if the run is short, or something like LDF2-50 for anything longer than 75cm or so.
The box should go above the rotator or top guy ring, just below or behind the dish.
Look forward to a QSO soon.
On 16/03/2015 15:18, essexsteve@... [ukmicrowaves] wrote: