[Heathkit] connection

[dg8lav at amsat.org]

You need :

SK-220 SOFT-KEY MODULE 
The SK-220 is an interface module which allows your transceiver to 
key the SB-220 seeing only 0.7 volts at 1.5 mA. The original SB-220
circuit had +120 volts on the keying line. This easily installed unit is 
only $21.00.  Sales tax for Ohio residents will be added. 

http://www.harbachelectronics.com/reference/harpg3cart.htm

Works for me a long time without problems.

73 de Karl
dg8lav


*********** REPLY SEPARATOR  ***********

On 18.08.2004 at 16:28 irvingf wrote:

>hi
>i own a kenwood 940s and just picked up a heathkit sb220 amp . iwas told
>i would need an isolation relay inorder not to fry the radio. i found a
>soft key 220 interface
>made by harbach electronics. is that what i need and is it the best.i
>was told of an icom
>interface but it doesn't fit the 940
>any help is appreciated
>irv  ka2zje
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