[Heathkit] Heathkit SB 220 and SB 201 amperage draws

[Peter Markavage]

Go here:
http://www.ne7x.com/sb200/heathkit-sb200.htm

This should answer your question about SB-200 input impedance. On my 756
PRO II, I use the auto antenna tuner to match the input impedance of the
SB-200 to the output of the PRO II. Works great on AM and SSB.

Pete, wa2cwa

On Tue, 7 Mar 2006 00:03:07 -0500 "David  Thompson"
<thompson at mindspring.com> writes:
> A friend in another state has a problem with using his SB 200 amp.  
> He has a
> IC 765 transceiver and Butternut 80 to 10 vertical.  With the 
> transceiver
> directly to the vertical he has good SWR (below 1.5 on the bands).  
> With the
> amp in the line the SWR climbs to 3 to 1.
> 
> I have used SB 220's in the past but have never owned the SB-200.  
> Does the
> 200 have tuned inputs?
> It seems tthere is a mismatch between the transceiver and the amp.  
> The coax
> checks OK and I asked him to borrow another amp to see if it 
> duplicates the
> problem. He has used the amp with other transceivers
> and transmitters/receivers with success.
> 
> Is this a mismatch at the amp or what?
> 
> 73 Dave K4JRB