First DATV QSO on 5.7 GHz?

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G8GKQ
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First DATV QSO on 5.7 GHz?

Post by G8GKQ » Fri Apr 10, 2020 1:21 pm

Neil G4LDR and I exchanged DATV pictures on 5.7 GHz over a 9 km obstructed path between our home QTHs today. Power at each end was about 5W; Neil running 125 kS DVB-S (from a Portsdown with filter-modulator board into his narrow-band transverter) and me running 333 kS DVB-S2 (from a Portdown with a LimeSDR into a homebrew (DATV) transverter).

We are not sure if this is a first? Has anyone else exchanged DATV pictures on this band? If so, over what distance?

Pictures below.

Dave, G8GKQ
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G4EWJ
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Re: First DATV QSO on 5.7 GHz?

Post by G4EWJ » Fri Apr 10, 2020 2:11 pm

I haven't heard of any previous UK DATV activity on 5.7GHz. HB9AFO has a record of a Japanese QSO in 2012 with SR-Systems equipment.

https://www.hb9afo.ch/records/recordse.htm

Brian

g8gtz
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Re: First DATV QSO on 5.7 GHz?

Post by g8gtz » Fri Apr 10, 2020 2:21 pm

I think it is a UK first for DATV as GTZ and FRE did not get our act togtehr soon enough!

I'll add it to the UK records wiki page https://wiki.batc.org.uk/UK_ATV_DX_Records

Congrats
Noel - G8GTZ

G8GKQ
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Re: First DATV QSO on 5.7 GHz?

Post by G8GKQ » Fri Apr 10, 2020 3:06 pm

Thanks Brian and Noel

Not sure that we'll be bettering the Japanese record of 464 km any time soon, but good to know that we're first in the UK.

So, there's the challenge to everybody in the UK - do better than 9 km on 5.7 GHz DATV!

Dave, G8GKQ

g0mjw
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Re: First DATV QSO on 5.7 GHz?

Post by g0mjw » Fri Apr 10, 2020 3:17 pm

Congratulations. I am surprised this the first UK 5.7 GHz DATV contact as there has been so much recent activity on 5.7 GHz analogue. Anyway is seems odd as we have already done 24 GHz and 10 GHz. I think 47 GHz and daylight might have been done too. How did 5.7 GHz get missed?

Mike

G4FRE
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Re: First DATV QSO on 5.7 GHz?

Post by G4FRE » Fri Apr 10, 2020 5:52 pm

Because everyone was focused on 5.6GHZ FPV FMTV?

Dave
G4FRE

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