1.6m Prime Focus

Rick · 15-03-10, 09:23 PM

Picked up a new dish so thought I would post up some pictures

DSC03250.jpg DSC03252.jpg DSC03253.jpg DSC03254.jpg

It's a 1.6m prime focus, as yet I'm not sure who made it.

Not been able to do much testing yet as the LNB is knackered, but hopefully Ian will live up to his usual speedy service and A new one will be with me soon.

The polar mount was siezed solid when I got it though I have managed to free that off, and i'm about ready to see what it will recieve as soon as the new LNB arrives.

I'm planning on refurbishing the dish, so I will post updates as I go.

martin-f · 15-03-10, 09:34 PM

hi rick it would be nice to see 7w on your list i maybe joining you soon m8

i will let you know if/when

Rick · 15-03-10, 09:43 PM

It will be as soon as the new LNB arrives. Don't think I will make the Horizontals with it but Im hoping for the verticals.

Robbo · 15-03-10, 10:02 PM

Ahh, I see what you mean about the LNB Skew now.

There doesn't appear to be a way of physically adjusting it.

It don't know the correct name for it, but my Fibo had a part that looks very similar to what you have there between the feedhorn and the C120 flange. A voltage applied to it adjusts the skew electrically I believe.

martin-f · 15-03-10, 10:13 PM

the one i went to look at had two wires coming from the lnb and i did ask what they was for and he did say it's for the lnb skew so i would say you are right robbo

Robbo · 15-03-10, 10:39 PM

It's a polariser.

LNB Skew

Rick · 15-03-10, 11:02 PM

Yes I think it is a polariser, I've stripped the LNB and feedhorn, the feedhorn is in two parts, but they were seized together. The bolt on the lower right is to secure it as the inner part of the feed horn will slide in the outer. So when I put it back together i will leave the poliriser out and connect the feedhorn direct to the lnb.

lincsat · 15-03-10, 11:48 PM

It's a 2 wire polarizer, it uses a magnetic field to skew the signal as opposed to the older 3 wire types that uses a paddle. If you have a receiver that can control the polarizer, it's best to use one as the skew from different satellites is slightly different.

Rick · 16-03-10, 09:22 AM

Quote:

Originally Posted by lincsat

It's a 2 wire polarizer, it uses a magnetic field to skew the signal as opposed to the older 3 wire types that uses a paddle. If you have a receiver that can control the polarizer, it's best to use one as the skew from different satellites is slightly different.

Unfortunatley none of my recievers will. I'll be starting off moving the dish manually, as I haven't got a V-Box yet either, so can adjust the skew manually for now, I'll do some reading up on these polarisers, see if I can figure out the voltages for them and have a play.

kerrywez · 16-03-10, 10:45 AM

I had a box one time that did the skew, I might be worng, but I think that it was Philips that I used for the positioner for the good old D2 Mac, way back in the good old days. I think there was one for sale on here some time ago.

Regards Wez

15-03-10, 09:23 PM	#1 (permalink)
Rick Super Moderator Join Date: Jun 2008 Location: Blackburn, UK Posts: 2,630	1.6m Prime Focus Picked up a new dish so thought I would post up some pictures DSC03250.jpg DSC03252.jpg DSC03253.jpg DSC03254.jpg It's a 1.6m prime focus, as yet I'm not sure who made it. Not been able to do much testing yet as the LNB is knackered, but hopefully Ian will live up to his usual speedy service and A new one will be with me soon. The polar mount was siezed solid when I got it though I have managed to free that off, and i'm about ready to see what it will recieve as soon as the new LNB arrives. I'm planning on refurbishing the dish, so I will post updates as I go. __________________ Fibo 1.2m HH, Wavefield T90. AzBox HD Premium, Vu+ Duo Plumber and Satellite Installer North West Satellite Systems

15-03-10, 09:34 PM	#2 (permalink)
martin-f Super Moderator Join Date: Apr 2008 Posts: 3,301	Re: 1.6m Prime Focus hi rick it would be nice to see 7w on your list i maybe joining you soon m8 i will let you know if/when __________________ 1mtr orbital dish motorised azbox premium hd technomate 6900 hd combo "never argue with an idiot, they will bring you down to their level and beat you on experience"

15-03-10, 09:43 PM	#3 (permalink)
Rick Super Moderator Join Date: Jun 2008 Location: Blackburn, UK Posts: 2,630	Re: 1.6m Prime Focus It will be as soon as the new LNB arrives. Don't think I will make the Horizontals with it but Im hoping for the verticals. __________________ Fibo 1.2m HH, Wavefield T90. AzBox HD Premium, Vu+ Duo Plumber and Satellite Installer North West Satellite Systems

15-03-10, 10:02 PM	#4 (permalink)
Robbo Satellite mad Join Date: Jul 2007 Location: Kent Posts: 9,439	Re: 1.6m Prime Focus Ahh, I see what you mean about the LNB Skew now. There doesn't appear to be a way of physically adjusting it. It don't know the correct name for it, but my Fibo had a part that looks very similar to what you have there between the feedhorn and the C120 flange. A voltage applied to it adjusts the skew electrically I believe. __________________ القمر الصناعي هو أفضل TM600 linux,TM6800HD,TM5200,TM1000,TM2200 motor, Triax TD110 dish. Electronics Engineer and satellite installer.MBC Satellites

15-03-10, 10:13 PM	#5 (permalink)
martin-f Super Moderator Join Date: Apr 2008 Posts: 3,301	Re: 1.6m Prime Focus the one i went to look at had two wires coming from the lnb and i did ask what they was for and he did say it's for the lnb skew so i would say you are right robbo __________________ 1mtr orbital dish motorised azbox premium hd technomate 6900 hd combo "never argue with an idiot, they will bring you down to their level and beat you on experience"

15-03-10, 10:39 PM	#6 (permalink)
Robbo Satellite mad Join Date: Jul 2007 Location: Kent Posts: 9,439	Re: 1.6m Prime Focus It's a polariser. LNB Skew __________________ القمر الصناعي هو أفضل TM600 linux,TM6800HD,TM5200,TM1000,TM2200 motor, Triax TD110 dish. Electronics Engineer and satellite installer.MBC Satellites

15-03-10, 11:02 PM	#7 (permalink)
Rick Super Moderator Join Date: Jun 2008 Location: Blackburn, UK Posts: 2,630	Re: 1.6m Prime Focus Yes I think it is a polariser, I've stripped the LNB and feedhorn, the feedhorn is in two parts, but they were seized together. The bolt on the lower right is to secure it as the inner part of the feed horn will slide in the outer. So when I put it back together i will leave the poliriser out and connect the feedhorn direct to the lnb. __________________ Fibo 1.2m HH, Wavefield T90. AzBox HD Premium, Vu+ Duo Plumber and Satellite Installer North West Satellite Systems

15-03-10, 11:48 PM	#8 (permalink)
lincsat Super-Dooper Moderator Join Date: Sep 2005 Location: In front of the PC Posts: 6,227	Re: 1.6m Prime Focus It's a 2 wire polarizer, it uses a magnetic field to skew the signal as opposed to the older 3 wire types that uses a paddle. If you have a receiver that can control the polarizer, it's best to use one as the skew from different satellites is slightly different. __________________ DM800Pro/SE, Vu+ in Stock, SkyboxF3 under £55, Openbox S6000 £95. Kryptview/Phoenix A850HD £237.50, Kryptview £133 with Members Discount - Lincsat's Nick-Nacks (Shop) Drivers Protest Union

16-03-10, 10:45 AM	#10 (permalink)
kerrywez Grumpy Old Sat Man Join Date: Sep 2007 Location: Co. Kerry, Ireland Posts: 2,471	Re: 1.6m Prime Focus I had a box one time that did the skew, I might be worng, but I think that it was Philips that I used for the positioner for the good old D2 Mac, way back in the good old days. I think there was one for sale on here some time ago. Regards Wez __________________ Dreambox 7025, 250HDD, Dreambox 500s, 110 X 90Cm Hirschmann on Clarketech rotor, 1.2 Mtr. Channel Master. AZBox HD Running on E2. TM6900 super combo.

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