Hi Bob, W7LRD

Your switching box is the KLM model CS2 suitable for 70 cm crossed yagi model 435-18CX or 435-40CX and it is enclosed into a completely sealed aluminum box so that a weep hole in the bottom is recommended to prevent umidity condensation inside of it.

I have removed the above CS2 switching box for only RHCP and LHCP on my 435-40CX crossed yagi and I have designed and built e four polarizations switcher for V-H-RHCP and LHCP as described by my articles into the AMSAT Journal March/April 2007 and May/June 2007

If you cannot get the above AMSAT-Journals please let me know and I will send to you a copy via Stan W1LI because your provider @comcast.net rejects all emails coming from my provider @tin.it

Best 73" de

i8CVS Domenico

----- Original Message ----- From: Bob- W7LRD To: domenico.i8cvs@tin.it Sent: Friday, January 22, 2010 7:21 PM Subject: switch box

Hi Domenico

Thanks for your pictures. Attached are some pictures of my switch box. I am not sure what the brand of this antenna is. It has been recommended that I have a weep hole in the bottom. What do you think? There is sealing material called 3M5200 a marine sealant, very nasty but almost permanent and very wx resistant.

73 Bob W7LRD