Your next to last sentence has the answer "No" Steve. Only fixed roofing
filter action is present until the DSP core processor is reached at the
final IF of 36 KHz. All narrower bandwidths are determined by DSP filters.
The PRO is architecturally very different from the 870.
73/72/oo, George W5YR - the Yellow Rose of Texas
Fairview, TX 30 mi NE of Dallas in Collin county EM13qe
Amateur Radio W5YR, in the 56th year and it just keeps getting better!
QRP-L 1373 NETXQRP 6 SOC 262 COG 8 FPQRP 404 TEN-X 11771 I-LINK 11735
Icom IC-756PRO #02121 Kachina 505 DSP #91900556 Icom IC-765 #02437
All outgoing email virus-checked by Norton Anti-Virus 2002
Steve Ellington wrote:
>
> George, are you saying the PRO has no means to vary the IF bandpass before
> reaching the DSP? If you set DSP for 100hz bandwidth, does the IF bandwidth
> remain wide open at it's default? The TS-870 has two rather wide band IF
> amps with wide, 6khz crystal filters, and as I mentioned, they overlap as
> greater selectivity is called for. Surely, the PRO has some means of doing
> this...or does it? Educate me on this please.
|