Usals problem & alignment

R

Red alert

Member
Messages
145
My Satellite Setup
1m Gibertini XP, Edision Mio 4K on Stab HH100
My Location
Manchester
Question for you all. How many of you actually measure the arm length before installing a new setup? This is something I never had thought of doing in the past due to “trust” of supplier.

HM-Sat have decided to send me the correct arm which is good news. Thanks @a33
 
Last edited:
sonnetpete

sonnetpete

Grumpy Old Moderator
Staff member
Messages
7,440
My Satellite Setup
Laminas 1.2M fibre dish with an IBU, on a Clarke Tech USALS motor, covering 57E - 24.5W to an Octagon SX88. Displayed on a 20" Dyon LED TV.

Seperate 80 cm dish on 28E with a Humax Freesat for SWMBO.
Free Sat V8 meter. Sony Bravia 46" LCD, Sony BluRay and Home Cinema.
My Location
Normandy, France
Question for you all. How many of you actually measure the arm length before installing a new setup?
Never...though to qualify that, all the dishes I've installed in the past here (seven and counting) have just 'looked right' out of the box. Perhaps that's because I've usually upgraded dishes and I have a smaller diameter one to compare the larger one with (though from memory, I've not done so) However, I'm pleased that HM Sat have finally agreed to send you a replacement feedarm. We await results....
 
jeallen01

jeallen01

Specialist Contributor
Messages
4,449
My Satellite Setup
See Signature
My Location
Somewhere in England (possibly?)!
Question for you all. How many of you actually measure the arm length before installing a new setup? This is something I never had thought of doing in the past due to “trust” of supplier.

HM-Sat have decided to send me the correct arm which is good news. Thanks @a33
Like @sonnetpete, I've never thought to measure arm lengths for the same reasons - OTOH, most of my dishes are s/h and "probably" worked OK for the previous owners (even some of the latter appeared to have no idea of how to set them up!)o_O
 
A

a33

Specialised Contributor
Messages
640
My Satellite Setup
XSAT410
Rebox RE-9000
My Location
NL
Question for you all. How many of you actually measure the arm length before installing a new setup? This is something I never had thought of doing in the past due to “trust” of supplier.

HM-Sat have decided to send me the correct arm which is good news. Thanks @a33

First of all: Yes that is good news, from HM-satshop!
I don't know what went wrong the first time, but I didn't think the intention of the satshop was to give bad service.
I'm glad that it seems to get solved neatly, after all? :)


Who tests correct focal position? I do!
I've seen enough cases of not optimal LNB-position on the internet: wrong arm length, or wrong offset position ("arm hanging through" ~ is that english?). My own triax 115 did have an arm hanging too low. Trust, but verify!

And I did offer to calculate it for you, didn't I?
But I must confess it's easier when you have a calculator at hand for that. I have made my own myself (even for wider than high offset paraboloid dishes!). Parabola6 by strannik is also excellent; introduced here bij RimaNTSS.

For motor setups I find it essential. The angles don't add up right, if the LNB is not at the correct offset angle.

Greetz,
A33
 
Channel Hopper

Channel Hopper

Suffering fools, so you don't have to.
Staff member
Messages
29,701
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK
The arms I have here for Gibertini are for the older style 60 and 80cm reflector designs, but good news that the German distributor is playing ball, a pity the manufacturer's name is tarnished as a result.
 
Lazarus

Lazarus

Tout Rond Bon Oeuf
Staff member
Messages
25,870
My Satellite Setup
80cm Motorised.
Several small Dishes.
Much else.
My Location
North York Moors
+1 for never.
 
Top