Doug Smith W9WI wrote:
wrote:
- Agree.. ANY way of filtering this out ?
Buy a HD radio.
Seriously.
The Boston Acoustics Receptor HD, when tuning *analog* stations, seems
largely immune to IBOC QRM from *digital* stations on adjacent
frequencies. The set uses digital signal processing of analog signals;
I might guess that it uses the opposite digital sideband to cancel out
the one that's interfering with the desired analog station.
In general, my experience has been that the Receptor HD is a pretty
decent analog radio, both AM and FM, if you give it a decent antenna.
(the antennas provided with the radio are crap) Of course, it is pretty
expensive as well!
- Of course, the problem for the radio industry is that
- almost nobody *has* a Receptor HD - when the
- interference cranks up, people will buy XM or Sirius,
- put in a CD, or turn on the TV long before they'll buy
- a HD radio.
DS [W9WI] - Yes in spite of the idea behind HD-IBOC
AM/MW Broadcasting as being the 'savior' of AM Radio.
Many DX {Out-of-Area} Listeners may simply Turn-Off
the AM Radio and Turn-On something else. ~ RHF
In the SF Bay currently I can hear many Out-of-Area
AM/MW {Analog} Radio Stations like :
Sacramento - KSTE 650 kHz and KFBK 1530 kHz
Fresno KRE 580 kHz
With HD-IBOC these AM Signals will be under the
Digital Signal Hash an no longer be able to be heard.
* With HD-IBOC these AM Signals will be under the
Digital Signal Hash an no longer be able to be heard.
* Local Only - HD-IBOC will result in about 30 AM
Radio Stations that could be heard easily with 6-7
of those being so close to the each other that the
number may even be smaller.
In the Twain Harte, CA currently I can hear many
Out-of-Area AM/MW {Analog} Radio Stations like :
Sacramento - KSTE 650 kHz and KFBK 1530 kHz
Fresno KRE 580 kHz
* With HD-IBOC these AM Signals will be under the
Digital Signal Hash an no longer be able to be heard.
* Local Only - HD-IBOC will result in about 9 AM
Radio Stations that could be heard easily.
--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com