[TenTec] Sick 580 Delta

[N4NT]

You will find on the schematic that the ALC voltage is generated by two 
diodes on or near the final board.  Sometimes these fail because of a 
lightning discharge in the next county.  Another nearby pair generates the 
SWR voltage.  When a fellow is in there replacing diodes, it is well worth 
replacing all 4 or 5.

73, Mike N4NT

----- Original Message ----- 
From: "Sonny Eisenberg" <w4kxq at yahoo.com>
To: "TenTec List" <tentec at contesting.com>
Sent: Thursday, November 01, 2007 7:14 PM
Subject: [TenTec] Sick 580 Delta


> While checking my Delta 580 & 260 P.S.  setup before putting it for sale, 
> seems the ALC control is not working..Turns smooth but has no 
> effect...Everything else  operates normal .Transmits fine but of course 
> have to watch the drive control or the power supply will shut down..Any 
> one know what I should check or does this need a call to Tentec..
> Tnx for any help,
> Sonny W4KXQ