loss of SNR on HD ?

[The Mentalist]

My SNR drops to 60 - 65 % on HD channels from 80 - 85 % on other channels. Is this normal ? I have a DM800HDse with an 80cm dish. Do i need a different LNB to improve signal ?

[Simba92]

It would help if you said what satellite youre pointing at.

[The Mentalist]

Sly at 28.2E

[mdt]

Sly at 28.2E

if your in the uk your dish is slightly out... dvbs2 hd channels tend to have a lower snr than mpeg2/sd ones. what are you getting from channel 5 hd on astra 1n ?? regards mdt

[The Mentalist]

I am in UK. Getting 98% for Channel 5 from Astra 1N but it is not HD. Don't have an option to pick the HD channel on Astra 1N.

[stonewall]

mdt
I have similar issues to the poster. My location similar to yourself (Bolton,North west)
Snr: Channel 5 HD on astra 1n 60-61%. Would you say this is a dish alignement problem? I dont have many problems with break-ups of signals except in server heavy storms ( like yesterday). Your comments would be appreciated.

[mdt]

mdt
I have similar issues to the poster. My location similar to yourself (Bolton,North west)
Snr: Channel 5 HD on astra 1n 60-61%. Would you say this is a dish alignement problem? I dont have many problems with break-ups of signals except in server heavy storms ( like yesterday). Your comments would be appreciated.

the heavy storms we had yesterday reduced my signal by 5db and caused break up on the viasat nordic beams... it really depends on the rain margin you have on your set up. im getting 67% sq on a zone2 fixed on 19.2e with my octo lnb set at a 9 degree off-set for 28.2e. channel 5hd is on astra 2a southern europe beam and as such isnt as strong as 1n which has a uk spotbeam. although a zone1 is fine for all but the heaviest of storms id always go a little bigger if funds allow with a triax td54 or a zone2 for extra rain fade margin, so seeing as your using a 80cm dish it could be slightly out although im only getting 90% on my 1.25m gibby with matched feedhorn and inverto black pro.regards mdt