Hi Kevin,
The Digitalradio group 40m frequency is 7034.0kHz USB
If you set your USB VFO to 7034.0 kHz USB,
then your JT65A transmit frequency is approximately:
7035.2-7035.5 kHz
This frequency should be OK for Asia/Eur/Aus/Pacific/Rus/Afr, and
other areas of the world.
Bonnie KQ6XA
--- In di
In Andy's excellent Bozo's Guide the suggested operating frequency on 40
for JT65 is 7076.
Here in this part of the world 7050 - 7100 is the main SSB operating
area and 7075 is a very popular mobile SSB operating frequency.
So we would, by Gentleman's agreement not operate JT65 on 7076
Main digit
First a bit of brag.
This afternoon on 20m
041300 1 -8 -0.1 -13 3 * CQ ZS6WAB KG461 10
041500 7 -6 -0.1 -11 3 # VK5OA ZS6WAB KG46 OOO 1 10
041700 10 -9 -11 4 RRR ?
041900 3 -8 -0.2 -11 3 * -16DB TU 30M
Hello Cesco...
I am assuming the file is created "automagically" by the software.
What's the purpose of the date? Should I go in and edit the file
manually?
Howard W6IDS
Richmond, IN
- Original Message -
From: "cesco12342000" <[EMAIL PROTECTED]>
To:
Sent: Thursday, April 19, 2007
I was at work all day, but monitored 24910 from about 1400Z to Z .
some consistent activity
on a couple of different DF's, but nothing decoded into a callsign
Can do the same tomorrow
John
VE5MU
---
-Thanks Roger and Leigh,
How much SNR is needed to get a good picture on a typical HF band?
Andy
-- In digitalradio@yahoogroups.com, "Roger J. Buffington"
<[EMAIL PROTECTED]> wrote:
>
> Andrew O'Brien wrote:
> >
> > Now that images are legal to transmit (in the USA) and MFSK16 is set
> > for t
Andy,
I think it does not matter. RTTY has no envelope and nonlimear
amplifiers (Class C, etc) can be used with it.
Watch the ALC only for modes with an envelope, ie PSKxx.
73,
Jose, CO2JA
Andrew O'Brien wrote:
> I'm used to AFSK RTTY and keeping the ALC to a minimum. What about
> FSK RTTY I
I'm used to AFSK RTTY and keeping the ALC to a minimum. What about
FSK RTTY I notice my current settings produce a moderate amount of ALC
readings.
--
Andy K3UK
Skype Me : callto://andyobrien73
www.obriensweb.com
Andrew O'Brien wrote:
>
> Now that images are legal to transmit (in the USA) and MFSK16 is set
> for this in MixW and Multipsk, I wonder if it has been determined
> useful ? I rarely hear/see any use of this function. .
>
> -- Andy K3UK Skype Me : callto://andyobrien73
> www.obriensweb.com
I
Now that images are legal to transmit (in the USA) and MFSK16 is set
for this in MixW and Multipsk, I wonder if it has been determined
useful ? I rarely hear/see any use of this function. .
--
Andy K3UK
Skype Me : callto://andyobrien73
www.obriensweb.com
Thank you Patrick for the explanation. No doubt the mode has solid
theoretical resons for what it edits. Intercomparing various digital
modes has some merit-- like for a Ph.D thesis or marketing.
However as a user, the present value edited isn't a number that is too
useful.
It apparently tell
Hi John
I have be monitoring 24.910 almost the hole day with no luck, but
I was able to work South Africa on 40meter (7.045 USB) with
my "12 m dipole" right now.
The antenna is about 8 meter above the ground and I was using 75W.
193700 3 -21 0.1 -8 3 * LA5VNA ZS6WAB KG461 10
Hello brian,
The S/N referenced to a bandwidth is used to compare modes under a noise
environment criteria.
A minimum S/N of 0 dB means that with an equal power (let's say 1 watt) of
signal and noise (noise distributed over a 3 KHz band so with a density of
0.33 W/KHz), the signal transmitted
On Sat, 21 Apr 2007 12:58:12 -0400
"Andrew O'Brien" <[EMAIL PROTECTED]> wrote:
> John, name is Andy and am in FN02hk . I have been monitoring 12M
> while watching footy on the telly but just checked and see no
> received signals from anyone on 12M. I will transmit for a while and
> see if anyone
John, name is Andy and am in FN02hk . I have been monitoring 12M while
watching footy on the telly but just checked and see no received signals
from anyone on 12M. I will transmit for a while and see if anyone picks me
up.
Andy.
On 4/21/07, John GM4SLV <[EMAIL PROTECTED]> wrote:
On Sat,
On Sat, 21 Apr 2007 09:37:31 -0400
"Andrew O'Brien" <[EMAIL PROTECTED]> wrote:
> I'm not sure which Shetland island you are on John, I checked the
> Lerwick market web cam but did not see you out doing your shopping.
> I will try you later.
> Andy K3UK
>
Hi Andy,
Just returned and see absolute
I'm not sure which Shetland island you are on John, I checked the Lerwick
market web cam but did not see you out doing your shopping. I will try you
later.
Andy K3UK
On 4/21/07, John GM4SLV <[EMAIL PROTECTED]> wrote:
On Sat, 21 Apr 2007 10:32:25 +0100
John GM4SLV <[EMAIL PROTECTED]>
wrote:
On Sat, 21 Apr 2007 10:32:25 +0100
John GM4SLV <[EMAIL PROTECTED]> wrote:
>
> I'm going to try CQ on 24.910 (DF 0hz) on Fist Minute for most of the
> day while I'm around the house. I don't expect to be overwhelmed with
> a pile up!
>
> My simple station at the moment is IC706mk2g, set to ~20w o
I'm perplexed by the edited dB figures.
On JT65A HF it doesn't make any sense that the values are -5 or -6 db
when the signal is strong and moving the S-meter to s5 or s6.
Here we use a 300Hz filter and the audio output is adjusted to read
about 0db with no signal. What I would have expected is
I am not sure if the UTC time is correct since the announcement says
"8 AM" it might be 1200 UTC, not 1300..
Andy
-- Forwarded message --
From: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: 21 Apr 2007 10:57:41 -
Subject: [wsjtgroup] "Random QSO Hour" 13:00 - 15:00 UTC Meteor
S
Hello Steinar,
The problem in JT65 is that the important part of the Reed Solomon
coding/decoding (RS tables...) is not described. Moreover, it is writen in the
JT65 specifications (about RS decoding):
"it is based on a research paper by Ralf Koetter and Alexander Vardy and uses
computer code l
On Fri, 20 Apr 2007 23:20:49 -0400
"Andrew O'Brien" <[EMAIL PROTECTED]> wrote:
> I like Shetland John's idea about deep search work on 12 or 10 M. I
> think I will give it a try tomorrow on 12 and see what I come up
> with. Will check prop charts for best time to north of John O'
> Groats...
>
Hi Patrick,
Are you thinking about incorporate J65A in Multipsk? It would be great
LA5VNA Steinar
Patrick Lindecker wrote:
>
> Hello to all,
>
> _Comparizon with S/N Multipsk figures._
>
> According to JT65 specifications, this mode decodes with few errors
> down to -23 dB, with a normali
Hello to all,
Comparizon with S/N Multipsk figures.
According to JT65 specifications, this mode decodes with few errors down to -23
dB, with a normalized band of 2.5 KHz.
All Multipsk figures are normalized with a band of 3 KHz. -23 dB in 2.5 KHz is
about -24 dB in 3 KHz band (-23.792 dB exactl
All:
I used Pathsim to compare the sensitivity of JT65A
vs MFSK, PSK31 and OLIVIA using AWGN to alter the
SNR. I ran direct-path with no ionospheric
disturbance.
The chat modes decoded with error-free print down
to -12 to -14db SNR. The JT65A mode decoded
at -27db SNR (signal inaudible).
As
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