[ARC5] ARC-5 TX output circuit modeling [long]

[W7QHO at aol.com]

In a message dated 1/7/07 9:03:05 AM, cosmoline at aa4rm.ba-watch.org writes:


> Dennis I was coached to put a BCB variable in series w. output on anything
> like a TCS, a BC-2/430, or a ARC-5-ish hf.  Make sure series inductor
> rolled to 0 & start w. link @ half (45 deg.s).  Then tune BCB var. for
> max. load & this is where BCB var.'s Xc matches link Xl.  Then adjust
> link for right output stage operating pt.
> 

Marty,

HMMM....   Don't use the variable inductor at all.   Never tried that.   Have 
used the small fixed series cap with command sets, TCS, ATD, TA-12 and GP-7.  
 On the latter set, 100pf works FB 160 thru 40M.

Still don't understand where Ian's model puts the 1500pf unit, i.e., in 
parallel with the link, in series with it, where....?   (Ian, are you there?)

Dennis D. W7QHO
Glendale, CA