[Heathkit] SB-620 and HA-10

[KH6ITY at aol.com]

(1) I really enjoy having a scope to monitor my AM modulation envelope  
output. I have a working SB-620 scope. Someplace I read the SB-620 can be  adapted 
to work like an SB-610 scope. I don't have a manual on the 620 so I  don't 
want to risk things until I know. I noticed the 620 has an input on the  rear for 
RF input and a switch for  20 db attenuation. But without the  manual, I'm 
concerned and could use some advise. 
(2) I'm looking for an HA-10 Heathkit amp.
Regards & 73's  Larry  kh6ity   Brownsville,  TX