DVB-T sked ??

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G4WIM
Posts: 346
Joined: Thu Jan 29, 2015 8:36 pm

DVB-T sked ??

Post by G4WIM » Sat May 15, 2021 2:26 pm

Hi,

I'm in IO83NS near to Preston in Lancs and was wondering if anyone fancied trying a DVB-T sked on 2, 70 ?

I can muster about 10 watts or more on each band using Portsdown 4 and a Lime along with a Kncuker rx preceeeded by lna and filtering etc.

Location is at sea level but with a good take off all round, 70cms would be my preferred band.

PM me if interested.

73 Tim

M0DTS
Posts: 497
Joined: Sun Feb 24, 2008 9:03 pm

Re: DVB-T sked ??

Post by M0DTS » Sun May 16, 2021 4:27 pm

We could give it a try, path plot shows some knife edge possibility over the top of the pennines...
10W maybe a bit low for this path but you never know!
I have 8el on 2m and 15el on 70cm - but more power on 70cm and less band noise.

Rob
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M0DTS
Posts: 497
Joined: Sun Feb 24, 2008 9:03 pm

Re: DVB-T sked ??

Post by M0DTS » Sun May 16, 2021 6:47 pm

Close but not quite enough signal to noise for DVB-T.
Another day it may work.

Rob
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M0DTS
Posts: 497
Joined: Sun Feb 24, 2008 9:03 pm

Re: DVB-T sked ??

Post by M0DTS » Sun May 16, 2021 7:25 pm

DVB-S2 worked better but that has 1/4 fec available.
Tim received here upto D3.

Rob
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G4WIM
Posts: 346
Joined: Thu Jan 29, 2015 8:36 pm

Re: DVB-T sked ??

Post by G4WIM » Sun May 16, 2021 7:35 pm

Hi Rob,

close but no cigar at this end ! Just done a quick test and I have a huge out of band interferring signal on 443MHz at a level of -25dBm into the WH rx - might be why I couldn't decode your signal.

I'll see if I can filter / reduce its level then we can try again for a two way - I suspect the DVB-T lock up time might be a problem given the path and qsb etc.

Still not bad for an 80 mile path over the penines and me at sea level !

73 Tim

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