Jay in the Mojave wrote:

Steveo wrote:

Does DSP improve the receive much on 11?


Hello Steveo: ( anyone show up for a Lic?)

Yeah the DSP and digital IF filters work great, but as james said not a
fix all. Good call.

The DSP does reduce some noise and such. But the Digital IF Filters
allows the operator to select wide or narrow IF filters that allow a
great deal of flexible to the operator.

I use to have a sharp/narrow IF crystal filter in a Heathkit receiver,
it allowed you to receive AM signals during the jamming hour. It allowed
you to only receive one sideband if the station you wanted to understand
was a little low on the frequency, it worked.

While listening in on 10 and 11 meters, I have had stations from the
central and south america come in on the opposite sideband. On 38 LSB
one day I was trying to hear a station at Easter Island (357) but had
bleed over from a station on USB, the digital filters allowed me to
significantly reduce the USB signal/bleed over to hear 357. Usually I
can reduce stations from signal strength from the beam, by pointing the
null towards them, but in this case 357 was in the same direction.

I also use a DSP Speaker in the mobile that significantly reduces some
noises. But again it ain't a fix all. Shielding and by-passing the
iginition system and grounded the fenders, firewall, and hood was a
tremendous reduction in noises.

Next time your in AES or HRO have the sales dude show you the DSP and
digital filters on a Icom Pro 746 radio.

Jay in the Mojave

You can also do some really neat things with the attunator, different
bandwidths of the IF Filters, and rotating the beam around.

I have a one dB step attunator wired into the Icom 746.

Jay in the Mojave