Hi Joe ,
Well, spot s/n this side where similar ? not sure if the monitors
decode the first tx's or may be later last night ? Ive noticed
on 500/477 that some times , areas become no-go at times , not too
sure as to why , may be some of L's , pesky protons turn up in the
wrong place ? skip is very defined as well , strange ,bit like 6 meters
.
Opera was designed to run on standard ham kit tx/rx set ups . the
test 'CW' waveform was the 20 wpm self test from the Racal MA1723
, which has envelope shaping , the DSP samples at a much higher rate
than the TX baud rate , so pulses , static etc only affects a small
% of the signal , its not possible to 'loose lock' as each pulse is
self syncing
Yes .. Rf can be fascinating. , unless its just set fire to the shed
or producing purple flames , at the end of the Ae )
On frequency ?, no such thing with the Opera system . as long as
the carrier is inside the red-lines on the waterfall or a few Hz
in from the band edges , then that's all that is needed , best to
keep away from the dead-centre, that can be a little busy , a guard
band of 3 or 5 Hz should be enough, may be a little in from the
band edges as well to allow for RX off sets
Phase and ultra stability , that's only for the Train-Spotters and
'Pixel' deep sea monsters from below 2000 mtrs :) the DSP will
take care of drift / phase and envelope distortion ,noting that narrow
filters will reduce the minimum decode levle , due to 'ringing' and
slew the s/n , which is based on 2.4 KHz ssb b/w
The ras-pi project is suffering from distributed attention , Dave
seems to of fixed memory leakage and other strange attributes , the
last air-tests produced quite good signals , but its only one of
many things , hes linked to , on the brighter side , the latest
issue of the U3 , has opera and can be programmed for multi mode
sequential beacons , allowing wspr+opera etc , next is linking to the
psk-map to show tx activity ..
Good luck tonight Joe
73-Graham
--------------------------------------------------
From: <[email protected]>
Sent: Tuesday, November 11, 2014 6:28 PM
To: <[email protected]>
Subject: Re: LF: OP8 on 478.477 kHz
Hi Graham,
It seems like poorer condx but it could be TX trouble too. There's
a sharp spike & ringing on the leading edge of the square wave as
it goes from the 4427 to the hexfet gate. Putting more uF across
the Vdd of the 4427 didn't help and there is still hissing unless
one stands on the left foot with one's hand in the pocket.
RF is fascinating.
Let's have another go tonight. Oh by the way, am I on frequency?
I miss the accurate QRG reports of Markus' OPDS.
73
Joe
On Tue, 11 Nov 2014, Graham wrote:
Joe,
Condx changed from last night ? Quick check on the psk data base
showing , No decodes east coast usa
still into UK & EU
Reliable path though ?
73-G,
G8HUH 600m OPERA 3550 km 01:45:46
F6CNI 600m OPERA 4052 km 02:06:48
2E0ILY 600m OPERA 3533 km 02:38:21
PA3ABK 600m OPERA 4045 km 02:59:23
F5WK 600m OPERA 4017 km 02:59:23
G3XDV 600m OPERA 3720 km 02:59:23
-34 OPERA 0.477 11/11/2014 00:00 Canada VO1NA GN37OR G8HUH IO81MG
-29 OPERA 0.477 11/11/2014 00:53 Canada VO1NA GN37OR G3XDV IO91VT
-29 OPERA 0.477 11/11/2014 01:03 Canada VO1NA GN37OR G8HUH IO81MG
-25 OPERA 0.477 11/11/2014 01:24 Canada VO1NA GN37OR G8HUH IO81MG
-30 OPERA 0.477 11/11/2014 01:24 Canada VO1NA GN37OR G3XDV IO91VT
-33 OPERA 0.477 11/11/2014 01:24 Canada VO1NA GN37OR 2E0ILY IO82QV
-26 OPERA 0.477 11/11/2014 01:45 Canada VO1NA GN37OR G8HUH IO81MG
-29 OPERA 0.477 11/11/2014 02:06 Canada VO1NA GN37OR F6CNI JN19QB
-34 OPERA 0.477 11/11/2014 02:38 Canada VO1NA GN37OR G3XDV IO91VT
-31 OPERA 0.477 11/11/2014 02:38 Canada VO1NA GN37OR 2E0ILY IO82QV
-32 OPERA 0.477 11/11/2014 02:59 Canada VO1NA GN37OR G3XDV IO91VT
-32 OPERA 0.477 11/11/2014 02:59 Canada VO1NA GN37OR F5WK JN18HP
-34 OPERA 0.477 11/11/2014 02:59 Canada VO1NA GN37OR PA3ABK JO21IT
--------------------------------------------------
From: <[email protected]>
Sent: Monday, November 10, 2014 7:28 PM
To: <[email protected]>
Subject: Re: LF: OP8 on 478.477 kHz
Hi Laurence and Graham, Group,
An XE reception would be nice, but more ERP would improve the
odds. OK with me on the claim, Graham -- thanks for promoting the
op stuff. Will try again tonight, pending the mood of the TX wrt
hissing fits &c.
73
Joe
On Mon, 10 Nov 2014, Laurence KL7 L wrote:
No decodes last night but it was a stretch - if its any consolation I
did see timed carriers around 478.5 in qrss but they were weak
Laurence KL7L/XE3
Wspr tonight 475kHz
On Nov 10, 2014, at 10:53, "Graham" <[email protected]> wrote:
Joe,
Nice to see your call pop up on 477 ! first decode of you for
me , so that completes the 'First Atlantic two way data qso'
on MF ,
Only a short time between tx/rx each way change of mode and a
re-allocation of the band etc , but apart from that , jobs a
good one as they say hihi
73-Graham
G0NBD
10 Rx stations
DL-SWL 600m OPERA 4400 km 02:57:24
DF2JP 600m OPERA 4188 km 04:00:30
PA3ABK 600m OPERA 4045 km 05:24:37
F4DTL 600m OPERA 4005 km 02:57:23
LA3EQ 600m OPERA 3958 km 04:00:30
F1AFJ 600m OPERA 3949 km 05:56:11
G3XDV 600m OPERA 3720 km 02:15:20
2E0ILY 600m OPERA 3533 km 05:03:35
G0NBD 600m OPERA 3495 km 01:33:15
W3NF 600m OPERA 2149 km 01:54:17
39 reports held in the psk-map data base ,
-29 OPERA 0.477 09/11/2014 22:44 Canada VO1NA GN37OR PA3ABK JO21IT RX
Op8
-29 OPERA 0.477 09/11/2014 22:45 Canada VO1NA GN37OR DF2JP JO31HH RX
Op8
-29 OPERA 0.477 09/11/2014 23:16 Canada VO1NA GN37OR G0NBD IO83LK RX
Op8
-29 OPERA 0.477 09/11/2014 23:16 Canada VO1NA GN37OR F1AFJ JN06HT RX
Op8
-29 OPERA 0.477 10/11/2014 00:09 Canada VO1NA GN37OR W3NF FM19MH
Op8_||||||||||_~27dB
-32 OPERA 0.477 10/11/2014 00:09 Canada VO1NA GN37OR F1AFJ JN06HT RX
Op8
-30 OPERA 0.477 10/11/2014 01:33 Canada VO1NA GN37OR G0NBD IO83LK RX
Op8
-32 OPERA 0.477 10/11/2014 01:33 Canada VO1NA GN37OR W3NF FM19MH
Op8_||||||||||_~27dB
-30 OPERA 0.477 10/11/2014 01:43 Canada VO1NA GN37OR PA3ABK JO21IT RX
Op8
-30 OPERA 0.477 10/11/2014 01:43 Canada VO1NA GN37OR 2E0ILY IO82QV RX
Op8
-27 OPERA 0.477 10/11/2014 01:54 Canada VO1NA GN37OR W3NF FM19MH
Op8_||||||||||_~27dB
-30 OPERA 0.477 10/11/2014 02:04 Canada VO1NA GN37OR PA3ABK JO21IT RX
Op8
-31 OPERA 0.477 10/11/2014 02:04 Canada VO1NA GN37OR 2E0ILY IO82QV RX
Op8
-34 OPERA 0.477 10/11/2014 02:15 Canada VO1NA GN37OR LA3EQ JO28XJ RX
Op8
-27 OPERA 0.477 10/11/2014 02:15 Canada VO1NA GN37OR G3XDV IO91VT RX
Op8
-31 OPERA 0.477 10/11/2014 02:25 Canada VO1NA GN37OR PA3ABK JO21IT RX
Op8
-30 OPERA 0.477 10/11/2014 02:25 Canada VO1NA GN37OR 2E0ILY IO82QV RX
Op8
-27 OPERA 0.477 10/11/2014 02:46 Canada VO1NA GN37OR PA3ABK JO21IT RX
Op8
-25 OPERA 0.477 10/11/2014 02:46 Canada VO1NA GN37OR 2E0ILY IO82QV RX
Op8
-33 OPERA 0.477 10/11/2014 02:57 Canada VO1NA GN37OR F4DTL JN18FP RX
Op8
-31 OPERA 0.477 10/11/2014 02:57 Canada VO1NA GN37OR DF2JP JO31HH RX
Op8
-32 OPERA 0.477 10/11/2014 02:57 Canada VO1NA GN37OR DL-SWL JO52HP RX
Op8
-32 OPERA 0.477 10/11/2014 03:07 Canada VO1NA GN37OR 2E0ILY IO82QV RX
Op8
-31 OPERA 0.477 10/11/2014 03:18 Canada VO1NA GN37OR PA3ABK JO21IT RX
Op8
-31 OPERA 0.477 10/11/2014 03:18 Canada VO1NA GN37OR F1AFJ JN06HT RX
Op8
-28 OPERA 0.477 10/11/2014 03:28 Canada VO1NA GN37OR 2E0ILY IO82QV RX
Op8
-27 OPERA 0.477 10/11/2014 03:49 Canada VO1NA GN37OR PA3ABK JO21IT RX
Op8
-33 OPERA 0.477 10/11/2014 04:00 Canada VO1NA GN37OR LA3EQ JO28XJ RX
Op8
-30 OPERA 0.477 10/11/2014 04:00 Canada VO1NA GN37OR DF2JP JO31HH RX
Op8
-32 OPERA 0.477 10/11/2014 04:11 Canada VO1NA GN37OR 2E0ILY IO82QV RX
Op8
-24 OPERA 0.477 10/11/2014 04:11 Canada VO1NA GN37OR PA3ABK JO21IT RX
Op8
-32 OPERA 0.477 10/11/2014 04:32 Canada VO1NA GN37OR F1AFJ JN06HT RX
Op8
-29 OPERA 0.477 10/11/2014 04:42 Canada VO1NA GN37OR 2E0ILY IO82QV RX
Op8
-34 OPERA 0.477 10/11/2014 04:42 Canada VO1NA GN37OR PA3ABK JO21IT RX
Op8
-30 OPERA 0.477 10/11/2014 05:03 Canada VO1NA GN37OR 2E0ILY IO82QV RX
Op8
-29 OPERA 0.477 10/11/2014 05:03 Canada VO1NA GN37OR PA3ABK JO21IT RX
Op8
-33 OPERA 0.477 10/11/2014 05:24 Canada VO1NA GN37OR PA3ABK JO21IT RX
Op8
-33 OPERA 0.477 10/11/2014 05:56 Canada VO1NA GN37OR F1AFJ JN06HT RX
Op8
--------------------------------------------------
From: <[email protected]>
Sent: Monday, November 10, 2014 3:20 PM
To: <[email protected]>
Subject: Re: LF: OP8 on 478.477 kHz
Hi Graham, Jean-Pierre and group,
Thank-you JP and Graham for the reports. This was the first attempt
with the new exciter comprising 7493, 7400 and 4427 chips wired on a
bit
of perfboard on the bottom of this (poor) photo. Above this are 2
earlier
breadboards with 74161 and 4011 chips and above that a 10 MHz ref.osc
amp
and 4020 divider chip. To the left are the Arduino and DDS60 boards
and
an antenna changeover relay. The jack for the CW key is on the LHS of
the
perfboard.
Seeing 10 reports on pskreporter last night was gratifying but there
is
still work ahead... the TX has hissing fits from time to time. QRO is
in the future when some cores and caps can be sourced for a new PA.
73
Joe VO1NA
On Mon, 10 Nov 2014, F1AFJ wrote:
Hi Joe ,
Good receipt of your signal this night , in spite of my WSPR beacon
in
working .
73 J-P f1afj
Le 09/11/2014 21:35, [email protected] a écrit :
Dear Group,
The TX seems to have stopped hissing and appears to be working.
40 watts to the monopole until 1000 UTC 10 Nov.
Reports welcomed.
73
Joe VO1NA
--
http://jpmere.online.fr/Sommaire.htm
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