[Icom] Coax Switches Revisited

Mon, 19 May 2003 12:07:55 -0400

A lot of products such as this are "tuned" during assembly, using 
asymmetrical fastener torque (and other assembly tricks) to achieve 
isolation specs when final testing is done on a network analyzer. Taking 
them apart for cleaning will often "un tune" them. I've witnessed this in a 
production environment.

73 Frank W3UHF

>From: "William Lambing" <[email protected]>
>Reply-To: [email protected]
>To: <[email protected]>
>Subject: [Icom] Coax Switches Revisited
>Date: Mon, 19 May 2003 10:01:28 -0500
>
>
>  Problem is, not all switches are created equal.  If you have ever taken 
>any
>of them apart to clean contacts or whatever, you might find out that while
>some might say 40 or 50 db, look at the construction.  Good grief.if you 
>get
>10db you are doing good..!
>
>Switches held together with sheet metal screws should be a dead giveaway.
>Not quality..!!
>
>But, in most cases, as with radios, you get what you pay for.
>
>73
>
>Bill, W0LPQ
>----
>Your Moderator: Dick Flanagan W6OLD, [email protected]
>Icom Users Net: Sundays, 1700Z, 14.315 MHz
>Icom FAQ: http://www.qsl.net/icom/

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