Hi:

i've found out from my reading that pin diodes are only used as attns
and switches down to about 10MHz. i'm wondering if i can use another
type of diode as an attn or switch at lower freqs. i don't recall ever
hearing that.

i think i've seen common diodes (maybe gen purpose signal diodes) as RF
switches and the passive DBM can be used as an attn, though i'm not sure
about the freq range for the DBM attn.

BTW i've got the HP app notes on pin diodes, but there's no info there
pertaining to my question.

out of all the circuits i've seen, i'm beginning to think i'm stuck with
things like dual gate MOSFETs for attnuation. or bipolars driven into
the non-linear region. maybe JFETs or MOSFETS as analog switches.

i'll need to go down to 3MHz for now, but i'm interested in going lower
and what the practical solution is for different freq ranges.

any suggestions would be greatly appreciated.

thanks
mike c