-
Get involved.
We want your input!
Apply for Membership and join the conversations about everything related to broadcasting.
After we receive your registration, a moderator will review it. After your registration is approved, you will be permitted to post.
If you use a disposable or false email address, your registration will be rejected.
After your membership is approved, please take a minute to tell us a little bit about yourself.
https://www.radiodiscussions.com/forums/introduce-yourself.1088/
Thanks in advance and have fun!
RadioDiscussions Administrators
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Use Digital audio on your radio
- Thread starter 4dude
- Start date
OH NO! This is the same technology that makes such a mess on AM with iboc!
It may not be the same codec, but it's the same method that creates full-time hash QRM instead of SSB "side chatter".
It's going to be even worse than on AM, since people trying to receive SSB are using a local BFO that will make the hash even more apparent. There's no way to do this and not annoy everyone else who is trying maintain good operating practice.
A whole bunch of 50 baud sidebands at 62.5 hz spacing!
This is what happens when the FCC is full of lawyers instead of engineeers.
It may not be the same codec, but it's the same method that creates full-time hash QRM instead of SSB "side chatter".
It's going to be even worse than on AM, since people trying to receive SSB are using a local BFO that will make the hash even more apparent. There's no way to do this and not annoy everyone else who is trying maintain good operating practice.
A whole bunch of 50 baud sidebands at 62.5 hz spacing!
This is what happens when the FCC is full of lawyers instead of engineeers.
Tom Wells said:OH NO! This is the same technology that makes such a mess on AM with iboc! It may not be the same codec, but it's the same method that creates full-time hash QRM instead of SSB "side chatter".
Not quite. IBOC has a 20-30 kHz bandwidth, enough to ride roughshod over adjacent channels. This system is required by FCC rules to confine its bandwidth to about 6 kHz (a standard ham AM signal). Plus, hams can change frequencies at will to avoid QRM. Broadcast stations cannot.
It's going to be even worse than on AM, since people trying to receive SSB are using a local BFO that will make the hash even more apparent. There's no way to do this and not annoy everyone else who is trying maintain good operating practice. A whole bunch of 50 baud sidebands at 62.5 hz spacing!
It'll be no worse than an SSTV signal, only somewhat wider. The main problem with it is, since it plugs into an SSB rig, that the audio levels on the transmitter shouldn't be set too high and the speech processor should be turned off. Too much audio level could cause intermod between the carriers, resulting in splatter over more spectrum than the FCC allows. But that's the user's responsibility to make sure that doesn't happen.
This is what happens when the FCC is full of lawyers instead of engineeers.
??? ??? ??? Rules allowing any type of voice emissions in the phone bands have been in place for decades. No different than RTTY or digital telegraph/teletype modes in the CW spectrum. Common sense has to prevail and maybe digital phone modes should be confined to a subband, such as at the high end. So should Antique Modulation, for that matter.
Tom Wells said:OH NO! This is the same technology that makes such a mess on AM with iboc!
I have had a chance to hear a recording of somone using this: SOUNDS LIKE CRAP!!
The Dude said:Tom Wells said:OH NO! This is the same technology that makes such a mess on AM with iboc!
I have had a chance to hear a recording of somone using this: SOUNDS LIKE CRAP!!
So does any mode other than AM and slope-detected NBFM when listening on a receiver without a BFO. What's your point?
The Dude said:I have had a chance to hear a recording of somone using this: SOUNDS LIKE CRAP!!
And here it is!
http://files.ww.com/files/53570.html
- Status
- This thread has been closed due to inactivity. You can create a new thread to discuss this topic.