Some members of another group I am a member too felt harrassed and sent
a protest. Sometimes we got too many announcements and no real news, so
it became tiresome. Most mails were pdf's with large detailed images,
which was quite a burden for slow modems.
73,
Jose, CO2JA
---
Andrew O'Brien
I am guessing that it was taken down due to violation of Yahoo rules.
Several people have written to me privately complaining about what
they perceived as violations. I refrained from doing anything because
the group was in some sense a competitor to my digitalradio group.
Competition is good, so
ture
73 Dave WB2FTX
- Original Message -
From: Howard Brown
To: digitalradio@yahoogroups.com
Sent: Sunday, November 23, 2008 2:19 PM
Subject: Re: [digitalradio] Re: [illinoisdigitalham] Re: [psk31] Global
Emergency Network Marks Record
Hello David,
I would like to ask wha
on <[EMAIL PROTECTED]>; "Ewald, Steve, WV1X" <[EMAIL
PROTECTED]>; Earl Moore <[EMAIL PROTECTED]>; Earl Leach (WX4J) <[EMAIL
PROTECTED]>; Dave Knight <[EMAIL PROTECTED]>; Dan Ostroy <[EMAIL PROTECTED]>;
Dale Sewell <[EMAIL PROTECTED]>; Benson
Just for the record... My original comments were made tongue in cheek But
for the record
NTS Digital operates 24/7 on 80, 40, 30, 20, 17, and 15 meters... There are
mutiple stations that do this, again primarily dedicated to NTS traffic... Some
of the delivery points are made through pa
ember 31, 2007 14:25 UTC
Subject: Re: [digitalradio] Re: [illinoisdigitalham] Re: Power Mask for
Bandwidth Rules - USA
At one time the ARRL published plans for class B modulators with no
filters. What they publish will stay with the times. There is no reason
higher order analog filter
- Original Message -
> From: W2XJ
> To: digitalradio@yahoogroups.com
> Sent: Sunday, December 30, 2007 23:16 UTC
> Subject: Re: [digitalradio] Re: [illinoisdigitalham] Re: Power Mask for
> Bandwidth Rules - USA
>
>
> Modern filters that have been used i
To: digitalradio@yahoogroups.com
Sent: Sunday, December 30, 2007 23:16 UTC
Subject: Re: [digitalradio] Re: [illinoisdigitalham] Re: Power Mask for
Bandwidth Rules - USA
Modern filters that have been used in real equipment since the 80s can
be -1 db at 3100 and down 25 db at 3.5 k
Modern filters that have been used in real equipment since the 80s can
be -1 db at 3100 and down 25 db at 3.5 k with negligible overshoot and
ripple in the 10ths of a DB. Chebyshev filters are not really the filter
of choice for this, elliptic tilers with some custom tweaks are a better
choice.
An emission mask must accomodate AM so I looked at the speech amplifier and
modulator chapter in the 1955 Radio Amateur's Handbook. It advocates up to 25
dB of clipping and no circuit has more than a 3-pole filter. The best that can
be done today is a Chebyshev filter with 1 dB ripple and a 2.5
Mathew,
I don't think the League is trying to "control" anything.
My guess is that the FCC simply isn't buying the concept!
Perhaps it looks too much like an enforcement nightmare.
73,
John - K8OCL
Original Message Follows
From: "Matthew Genelin" <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROT
11 matches
Mail list logo
