So, , what digital modes exist that are in the 12 to 20 kHz range
could I use if I when and bought a SDR today ?
Andy K3UK
On 1/24/07, expeditionradio [EMAIL PROTECTED] wrote:
SDRs Open the Possibility for 18kHz Bandwidth HF Data
providing more robust communications and higher speed data.
Hold those thoughts for the ARRL Prize.
But yes there is lots of thought about narrow moodes, 500 Hz and less and wider
modes...3.5 KHz and perhaps 5-6 KHz.
The ARRL has proposed a 3.5 KHz bandwidth limit for wide bandwidth modes but I
think the FCC wants to limit it to less than 3 KHz (maybe
All,
The subject and E-Mail from N5OK says it all.
No design goals have been set for the mode/modem; but, look for them in the
next
few months. The actual ARRL Board action will be published when the Board
Meeting Minutes from last weekend's ARRL Board Meeting are published in the
next
few
The info the ARRL got was correct - it's in there today.
http://edocket.access.gpo.gov/2007/pdf/E7-729.pdf
Blind Linux users may have it better than Windows users. Check out
Emacspeak http://emacspeak.sf.net -- you can run your entire Linux
system from within EMACS using it. Heck, I run my entire system from
within EMACS anyway. The author, T.V. Raman, is a friend, though not a
ham.
I did some more research and found out that according to the Wikipedia
(which I find to be the most incredible resource on the internet for
general encyclopedic information), PSK (Phase Shift Keying) can be
considered to be a subset of QAM (Quadrature Amplitude Modulation). That
rather
So, , what digital modes exist that are in the 12 to 20 kHz range
could I use if I when and bought a SDR today ?
DRM.
9, 10, 18 and 20khz wide. Really good bitrate.
and it's free. google DREAM drm receiver.
DREAM does transmit too, DV (cd-quality) or data.
If this would be legal we would
KV9U wrote:
I did some more research and found out that according to the
Wikipedia (which I find to be the most incredible resource on the
internet for general encyclopedic information),
I can agree on that8-)
PSK (Phase Shift Keying) can be considered to be a subset of QAM
Does anyone have the wiring diagram for the cable for connecting a TM-271E to
an MFJ-1270C TNC?
I have the pin outs for BOTH, but the terminology or designations for the pins
vary too much for me to grasp.
What I've done is to modify the TM-271A with a Packet Pigtail, just like the
TM-271E
---
I just copied a partial picture om 7033.99. Couldnt make it all
out but the word Guatemala was definetly there. Maybe a TG9 ?
Mike K9HCK
In digitalradio@yahoogroups.com, Andrew O'Brien [EMAIL PROTECTED]
wrote:
What is this mode ?
http://www.obriensweb.com.unid.mp3
Hello Jose,
MFSK pictures are analog SSTV not digital SSTV.
Here are the MFSK SSTV specifications (from the Multipsk help)
73
Patrick
SSTV in MFSK16
Created by : Nick Fedoseev (UT2UZ) and Denis Nechitailov (UU9JDR) in 2003
Description :
It is a SSTV mode without transmission of a
What is that on or about 3,584?
Hi Jose:
they really aren't MFSK ,, they are FAX and this is what makes them noisy..
Unless a fax photo (try receiving a fax picture on one of the fax freq's)
you'll see that they are noisy too. It takes a very strong and clear signal to
get a clear pic.. It is possible,, I have had several..(
--- In digitalradio@yahoogroups.com, John Becker [EMAIL PROTECTED] wrote:
What is that on or about 3,584?
Feld Hell
I know hell and this aint it. but is back on again
At 07:55 PM 1/24/2007, you wrote:
--- In digitalradio@yahoogroups.com, John Becker [EMAIL PROTECTED] wrote:
What is that on or about 3,584?
Feld Hell
Announce your digital presence via our DX Cluster
telnet://cluster.dynalias.org
MFSK16 , over driven and with hum.
On 1/24/07, John Becker [EMAIL PROTECTED] wrote:
wav file attached
--
Andy K3UK
Skype Me : callto://andyobrien73
www.obriensweb.com
I am going to top post...so flame me. Hi Hi.
Bob, I'm over 65, been a ham for almost 50 years dropped out of engineering to
become a political scientist and somehow or the other became a program manager
for ADPE (automatic data processing equipment and systems...can you say
computer?).
I
--- In digitalradio@yahoogroups.com, Walt DuBose [EMAIL PROTECTED] wrote:
...I am looking for a
CD or DVD that has the Paul whiteman band with Gershwin at the piano
playing
Rhapsody in Blue A 40's RCA 78 RPM record. My copy was stolen
but I have the
RCA jacket. :-)
Walt --
I had a copy
Hi Walt,
Maybe you haven't seen the way hams have adapted ALE to our own
purposes... you can call CQ with it... in fact, there are 4 different
types of CQ. :)
We also have adapted ALE to do APRS-like stuff. But we call it ALE-GPR.
The ALE protocol, especially with what you can do with AMD, is
--- In digitalradio@yahoogroups.com, expeditionradio
[EMAIL PROTECTED] wrote:
We also have adapted ALE to do APRS-like stuff. But we call it ALE-GPR.
The ALE protocol, especially with what you can do with AMD, is flexible.
And in any case none of this is the last word, especially when hams
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