No, not by "content", except for unallowed transmission of music,
pornography, business communications, etc., there is no regulation by
"content". You can say or send whatever you wish. "Content" is the data
delivered. The actual wording in the regulations is "emission type"
instead of mode, bu
Yes, lots of modern transceivers have a dedicated data mode, but they're
generally too wide for optimal RTTY reception. In contrast, consider the
Twin Peak filter available on recent Icom transceivers, for example; it's
only available with the transceiver's mode set to RTTY.
73,
From: KH6TY
To: digitalradio@yahoogroups.com
Sent: Tue, March 9, 2010 2:08:20 PM
Subject: Re: [digitalradio] Re: 1976 FCC - Delete all Emission Types from Part
97
Julian,
Using FSK instead of AFSK means you can run a big amp Class-C and get more
power
El 09/03/2010 02:08 p.m., KH6TY escribió:
Using FSK instead of AFSK means you can run a big amp Class-C and get
more power output. Also, you do not have to worry about preserving
linearity on a Class-AB or Class-B amplifier if running FSK,or figure
out how to interface the computer to the rig
I assumed that people kept using FSK because paths to Europe can have 20-30 Hz
of Doppler spread.
73,
John
KD6OZH
- Original Message -
From: KH6TY
To: digitalradio@yahoogroups.com
Sent: Tuesday, March 09, 2010 19:08 UTC
Subject: Re: [digitalradio] Re: 1976 FCC - Delete all
Julian,
Using FSK instead of AFSK means you can run a big amp Class-C and get
more power output. Also, you do not have to worry about preserving
linearity on a Class-AB or Class-B amplifier if running FSK,or figure
out how to interface the computer to the rig for AFSK.
Many of the "big guns"
The advantage of using FSK is that one can take advantage of the excellent
RTTY filters built into some transceivers. These filters are generally not
available when operating in USB/LSB. This is particularly important to
contesters operating in a crowded environment and DXers dealing with weak
sign
groups.com [mailto:digitalra...@yahoogroups.com] On
Behalf Of KH6TY
Sent: Tuesday, March 09, 2010 1:40 PM
To: digitalradio@yahoogroups.com
Subject: Re: [digitalradio] Re: 1976 FCC - Delete all Emission Types from
Part 97
The hope was that PSK63 could replace RTTY, being both spectrally more
efficient
The hope was that PSK63 could replace RTTY, being both spectrally more
efficient, and more usable for a panoramic presentation for contesters
to see who is on the band, but it never came about. Too bad, I think,
because it would help reduce congestion during contests. PSK63's overall
time to co
al current study on how we are using our bands.
"Passion is inversely proportional to the amount of real (true) information
available."
Astrophysicist Gregory Benford 1980
--- On Tue, 3/9/10, KH6TY wrote:
From: KH6TY
Subject: Re: [digitalradio] Re: 1976 FCC - Delete all Emission Ty
Julian,
"Digital" is what the FCC calls "CW-RTTY/data. CW is digital so it is
included and that is why the digital segment starts at 14.000. The ROS
author is not a ham. I don't know who is guiding him, but legally as far
as the US is concerned, he could go higher still and avoid Olivia, but I
Your are right, Julian. The current regulations mostly protect phone
users from interference by other modes and digital users are left to
figure out how to share what space is left. The division is
approximately 50-50 between phone and digital "what the FCC calls
'data/RTTY'". This is a holdove
2010 2:20 AM
To: digitalradio@yahoogroups.com
Subject: Re: [digitalradio] Re: 1976 FCC - Delete all Emission Types from
Part 97
Paul, it works, at least in part, because the huge numbers of US amateurs in
proportion across the border are regulated both by mode and by bandwidth.
Radio does n
Paul, it works, at least in part, because the huge numbers of US
amateurs in proportion across the border are regulated both by mode and
by bandwidth. Radio does not stop at borders, of course, so what makes
it work for the US helps make it work for Canada. Imagine what it would
be like if ther
What is your solution?
--- On Mon, 3/8/10, g4ilo wrote:
From: g4ilo
Subject: [digitalradio] Re: 1976 FCC - Delete all Emission Types from Part 97
To: digitalradio@yahoogroups.com
Date: Monday, March 8, 2010, 10:35 AM
I'm with Skip here.
First of all,
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