Friend Carl / kz5ca
I have a very similar FL2277B to the FL2100z.
You have to check the capacity of the 2 condensers of having entered by each
band, they are the condensers that has the reel of 10mtrs in the
entrance, in my FL2277B the condensers are of 200pf and 100pf, if they
are outside of capacity never rot to lower the one it ROE between
the transiver and the FL2100z.
I had that problem and the one ROE it was very high in all the bands and
almost all the
condensers were outside of capacity, it changes them and now the one ROE it
is 1:1.
I know my FL2277B very well, if you need some other help, you can wonder.
A hug.73.-
Eduardo. CO8LY
>
> > I have made an interesting note on the FL2100B input swr VS.
> >tubes.!!!
> > I have been fighting this amp for a long time now using chinese
> >tubes and could never get the input swr down much below 2.5 :1.!!!On 10
> >mtrs. I had to add capacity to the input pi-net to get anywhere near
> >even 2:1. !!
> > I recently acquired a pair of Cetrons, ( 572B/T160L ) , which
> >I think was the tube originally used in that amp.
> > I tuned the inputs per the original instructions and lo and
> >behold, the inputs are almost all well below 1.5:1 swr. the only
> >exceptions are the high end of 80 ( 1.55:1) and the High end of 10 (
> >29.4 -29.7 , 1.45 :1 , !!!) I also had to remove the extra capacitance
> >I had added on 10.
> > I have to wonder now about the actual input capacitance of
> >the chinese tubes !!!!
> > what ever it was that caused the problems on 10 mtrs. I will soon
> >see if it has gone away.!!!!!
> > Has anyone else had problems with the 2100 on ten mtrs ??
> > Just wondering.!!!!
> >
> >
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|