[AMPS] SB-220 input circuit

[Rich Measures]

>At 04:12 AM 8/3/1999 -0700, you wrote:
>>
>>
>>>
>>>Hi Pete,
>>>
>>>> >From time to time we've seen posts about how the SB-220's input network
>>>> >is badly designed for 10 meters, and that results in lower output.
>>>
>>>Part of the problem is lead lengths and component tolerances, as 
>>>well as wiring dress.
>>>
>>€ A Q of only 0.75 on 80m is also part of the problem - but only for 
>>solid-state output radios.  
>>
>>>There is no solution other than dropping the panel and working on 
>>>the input.
>>> 
>>€  amen.   Extending the multimeter wires and adding a ground wire makes 
>>this a whole lot easier.  
>
>Ah... good point.  I'll check this out -- I assume you mean a ground wire
>between the panel and the chassis of the amp?  It looked like a real
>nightmare otherwise...

€  You need a ground wire if you operate the SB-220 with the front panel 
removed.  Otherwise, the multimeter does not work.  
.  
-  cheers, Pete


Rich...

R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  


--
FAQ on WWW:               http://www.contesting.com/ampfaq.html
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm