August 03, 2007

D44TD tropo test again...

I got an early call from Joe CT1HZE who was hearing D44TD well on tropo even though they were beaming at 70deg elevation, so it seemed the duct as far as CT was strong.

We made a sked on Skype. I called them on 144270.0 CW one minute periods, just sending dashes and was heard again. "419 for one second" at 07:23.

This is surely MS with tropo extension to 4050km.

Still no QSO though :-(


So At 11:23 when the moon has just set in Cape Verde we tried again:

here is a transcript of the Skype chat as it unfolded:

[11:23:31] Tim says: Your moon is set now??
[11:33:42] Frank @ D44TD says: YEP
[11:33:54] Frank @ D44TD says: "%= SSB▀
[11:34:15] Tim says: Frank...cpi me??
[11:34:30] Frank @ D44TD says: 250?
[11:34:33] Tim says: rrr
[11:35:17] Tim says: do you hear Joe cw?? I adjusted my TX to be exactly same frequency as him ...please tune to it?? OK
[11:35:32] Tim says: Sending _ _ _ _ _ _ _ _ _ _ 4 you now
TX morse dashes 11:35.00-59 (to make high duty cycle beacon and type at same time)
[11:36:22] Frank @ D44TD says: "%=
[11:36:24] Frank @ D44TD says: 250
[11:36:27] Frank @ D44TD says: will rx
TX D44TD de G4LOH 11:37.00-59
[11:37:01] Tim says: I am 50Hz lower than before to be exactly on frequncy Joe was using...did you copy him??
[11:37:17] Frank @ D44TD says: joe is full house
[11:38:14] Tim says: :)
[11:38:20] Frank @ D44TD says: you tx always ?
[11:38:47] Tim says: I TX ODD mins (second per)
TX Morse dashes 11:39.00-59 and 11:41.00-59
[11:39:00] Tim says: I TX now...!
TX D44TD de G4LOH 11:43.00-59
[11:43:42] Frank @ D44TD says: HEARING calls i think
[11:43:45] Frank @ D44TD says: no da da da
[11:43:57] Tim says: yes!! sending calls!!!
[11:44:00] Tim says: wow
[11:44:05] Tim says: ms or tropo?
[11:45:48] Tim says: _ - - - - - - - again

[11:46:31] Tim says: I need to stop for 20 minutes to sort out a cow....can you still be QRV in 20 mins??
[11:45:15] Frank @ D44TD says: 529 on burst..419 tropo
[11:47:12] Tim says: Is exact on freq or you have RIT in?
[11:47:12] Frank @ D44TD says: 429
[11:47:24] Frank @ D44TD says: ok will qsy 300
[11:47:26] Frank @ D44TD says: call me here
[11:48:19] Tim says: OK, will call here in 20 mins...I have to do Artificial Insemination on a cow now!!!

[12:06:32] Tim says: OK, hope the cow is pregnant now....lets try QSO again :)
[12:07:17] Frank @ D44TD says: ok
[12:07:43] Tim says: calling _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
[12:07:53] Frank @ D44TD says: will rx 270
[12:08:02] Tim says: 270?
[12:08:19] Tim says: OK 270 is fine
[12:11:06] Tim says: Do you tx?
[12:11:13] Frank @ D44TD says: no
[12:11:17] Frank @ D44TD says: just rx
[12:11:27] Tim says: ok, sending dashes again...
[12:13:37] Frank @ D44TD says: you tx only second periode right?
[12:13:40] Tim says: rr
[12:13:59] Tim says: see in spectran??
[12:14:07] Frank @ D44TD says: yep
[12:14:24] Tim says: wow...
[12:17:07] Tim says: So can we make a qso??
[12:19:03] Frank @ D44TD says: think yes
[12:20:08] Tim says: great let's do it...
[12:20:34] Frank @ D44TD says: call you
[12:20:37] Tim says: ok
[12:24:20] Frank @ D44TD says: nothing sorry
[12:24:26] Tim says: :(
[12:24:37] Tim says: still see in spectran?
[12:25:28] Frank @ D44TD says: no more
[12:25:42] Tim says: dashes again now
[12:35:54] Frank @ D44TD says: breakfast time
[12:36:08] Frank @ D44TD says: we have to try in the evening again
[12:36:32] Tim says: enjoy food, 73

So again one way 429 with 529 MS or aircraft enhancement across the Bay of Biscay where the low pressure has already upset the possible tropo duct.

Not heard anything this end though, still not convinced I have the frequency exactly right for my narrow CW filter.

I just hope the cow is pregnant.


Tried again later in the day when D44TD was 599++ with CT1HZE and EB8AYA spotted in IN52.

[16:30:13] Frank @ D44TD says: ja
[16:32:24] Frank @ D44TD says: REAL TROPO
[16:32:32] Frank @ D44TD says: $!) $") QSB
[16:32:41] Frank @ D44TD says: 419 429 qsb

Continues......

[16:48:12] Frank @ D44TD says: break
[16:48:55] Frank @ D44TD says: 529
[16:49:00] Frank @ D44TD says: callled you
[16:49:12] Tim says: HOw can this be!! I hear nil

[16:49:55] Frank @ D44TD says: it was you vy sure
[16:50:11] Tim says: I am very pleased but very frustrated!!!

Still I cannot hear them.
No QSO.

If I do hear good signals there will not be dialogue on the Skype until after calls and RST are properly exchanged....if only!

Another test for 30mins in the evening:

[20:28:24] Frank @ D44TD says: good ping from you loud

One ping only :-(

Weather is very bad for tropo now. Light rain. Forecast is better tomorrow.

Posted by Tim at August 3, 2007 08:45 AM
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