IARU Region 1 ATV Contest 13/14 June

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G8ADM
Posts: 121
Joined: Sat Feb 23, 2008 7:14 pm

Re: IARU Region 1 ATV Contest 13/14 June

Post by G8ADM » Fri Jun 12, 2020 12:17 pm

I will be on from home in Pinner. Tx / Rx 70cm 2MS/s and receive on higher frequences...

radiogareth
Posts: 613
Joined: Wed Jan 06, 2016 9:46 am

Re: IARU Region 1 ATV Contest 13/14 June

Post by radiogareth » Fri Jun 12, 2020 2:35 pm

5.7GHz good to go :-) Just hoping Marcel can edit DVBS2-GUI to use the full Pluto RX range before the weekend.
No changeover relays were harmed in making this. It will also work as-is NB directly with the Langstone :-)
Cross-bar bolts to my Surveyors tripod.
Gareth
2020-06-12 15.23.27.jpg
2020-06-12 15.23.27.jpg (96.91 KiB) Viewed 989 times

g4bao
Posts: 14
Joined: Fri Jan 12, 2018 1:14 pm

Re: IARU Region 1 ATV Contest 13/14 June

Post by g4bao » Fri Jun 12, 2020 10:42 pm

I plan to be QRV on 146.5MHz (5W to 8ele horizontal) and 23cm (50W ish to a 44 ele) from JO02cg if anyone would like to try.

I will put out a test card at various times on 146.5 and 1255MHz system DVB-S H264 333 FEC 2/3.
Unless anyone can advise me on more appropriate system settings as I'm new to terrestrial ATV

Contact me for a skeds 01223 862480, @g4bao on Twitter, via the ON4KST GHz bands chat and I will leave the SSB RX on 144.750MHz TV chat frequency. Manual changeover of antennas between SSB and TV, so give a few calls, I may be transmitting TV.
Also QRV on 23cm SSB with 200W to the 44ele for sked setup.

Hope to make a QSO!

73
John

g4bao
Posts: 14
Joined: Fri Jan 12, 2018 1:14 pm

Re: IARU Region 1 ATV Contest 13/14 June

Post by g4bao » Fri Jun 12, 2020 10:53 pm

I should probably add that with some wire pulling and cable swapping that I can receive on
10370.5
3402.5
and 24049.0 MHz

using my terrestrial transverters if anyone wants a cross band QSO.

Not quite got round to TXing on those bands yet, but it's just a matter of switchery and drive levels from my Portsdown

Again, call in the places described in the previous post or in fact I have Zello as well

73
John

g8vpg
Posts: 353
Joined: Fri Oct 11, 2013 9:35 am

Re: IARU Region 1 ATV Contest 13/14 June

Post by g8vpg » Sat Jun 13, 2020 8:18 am

John,
Talkback on 144.750MHz is usually FM; if you can't make a 2m FM contact, you won't be exchanging TV pictures!
73 Shaun.

M0SKM
Posts: 303
Joined: Sun Jul 13, 2014 3:15 pm

Re: IARU Region 1 ATV Contest 13/14 June

Post by M0SKM » Sat Jun 13, 2020 9:00 am

I will be on from home in IO91RV. Two way on 1255MHz analogue/digital, two way 437MHz and receive on 146.5MHz.
Contact via Zello or https://dxspot.batc.org.uk/

Steve
Find me on D Star through GB7BP

g0mjw
Posts: 1443
Joined: Sat Sep 20, 2014 9:15 am

Re: IARU Region 1 ATV Contest 13/14 June

Post by g0mjw » Sat Jun 13, 2020 9:13 am

g4bao wrote:
Fri Jun 12, 2020 10:42 pm
I plan to be QRV on 146.5MHz (5W to 8ele horizontal) and 23cm (50W ish to a 44 ele) from JO02cg if anyone would like to try.

I will put out a test card at various times on 146.5 and 1255MHz system DVB-S H264 333 FEC 2/3.
Unless anyone can advise me on more appropriate system settings as I'm new to terrestrial ATV

Contact me for a skeds 01223 862480, @g4bao on Twitter, via the ON4KST GHz bands chat and I will leave the SSB RX on 144.750MHz TV chat frequency. Manual changeover of antennas between SSB and TV, so give a few calls, I may be transmitting TV.
Also QRV on 23cm SSB with 200W to the 44ele for sked setup.

Hope to make a QSO!

73
John
Hi John - I don't think we have a good enough path to work but I suppose we could test that on FM - my antennas are all horizontal beams though so I need to be pointing the right way for talk back.I have zello too. I am not set up yet, that's this mornings job. Had a lie in after completing those tiring Monday to Friday tasks you can now only dimly remember.

As for system settings I have been experimenting with low rates but for this contest maybe DVB-S2 at 333ks 1/4 rate or 125ks 1/2 rate will be sufficient for sending a contest exchange. Maybe even 66ks without audio would do. Awful pictures unless you use H265 but good enough for a static image with 4 numbers on it

Mike

g4bao
Posts: 14
Joined: Fri Jan 12, 2018 1:14 pm

Re: IARU Region 1 ATV Contest 13/14 June

Post by g4bao » Sat Jun 13, 2020 10:30 am

[Thanks for that Shaun. wasn't sure. I can of course do FM :-0 !

Do people use H or V pol on 144.750 FM?

73 John

g0mjw
Posts: 1443
Joined: Sat Sep 20, 2014 9:15 am

Re: IARU Region 1 ATV Contest 13/14 June

Post by g0mjw » Sat Jun 13, 2020 2:06 pm

M0DHP wrote:
Wed Jun 10, 2020 3:59 pm
I'm planning to operate on Sunday at The Ridgeway IO91IN. 70cm and (possibly) 23cm.

73
Ray M0DHP
Hi Ray - that Line of sight to me so should work on 70cm

Mike IO91IO

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G1LPS Terry
Posts: 154
Joined: Mon Mar 10, 2008 10:33 pm

Re: IARU Region 1 ATV Contest 13/14 June

Post by G1LPS Terry » Sat Jun 13, 2020 6:22 pm

We are seeing G7KBZ on 23cm FM ATV anyone know how to contact him????

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