Beam Approach Visual Indicator Ref 10Q/4 RAF
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Beam Approach Visual Indicator Ref 10Q/4 RAF
Good day to you all, my name is Andy and I'm wondering if you might be able to help me.
I have been directed to this forum as part of my quest to find out more about this Sangamo Weston Beam Approach Visual Indicator Serial No 13078G
All I know to date is from the Aero Antique website and just wondering how much more there is to learn?
Cheers Andy
I've tried pictures but perhaps I'm not allowed to post yet?
I have been directed to this forum as part of my quest to find out more about this Sangamo Weston Beam Approach Visual Indicator Serial No 13078G
All I know to date is from the Aero Antique website and just wondering how much more there is to learn?
Cheers Andy
I've tried pictures but perhaps I'm not allowed to post yet?
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Yes, thank you that's the instrument.
I have pictures of the reverse but cannot share yet.
Mine, or should I say, my other half`s (Christmas present from me...) looks in a used condition compared to that one. There is a little delamination on the glass and some rust etc. but it has the bulbs in position.
Cheers Andy
I have pictures of the reverse but cannot share yet.
Mine, or should I say, my other half`s (Christmas present from me...) looks in a used condition compared to that one. There is a little delamination on the glass and some rust etc. but it has the bulbs in position.
Cheers Andy
Hi Andy
Yes not sure if you need a minimum number of posts before being able to post pics,I guess it will be maybe 5 or 10 posts.
Without googling I cannot give any info about the system although I have a rough idea how it worked.
Hopefully somebody will come along with some useful stuff for you.
rgds LR
Yes not sure if you need a minimum number of posts before being able to post pics,I guess it will be maybe 5 or 10 posts.
Without googling I cannot give any info about the system although I have a rough idea how it worked.
Hopefully somebody will come along with some useful stuff for you.
rgds LR
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Ok, thanks LR.
That Aero Antique website has given me a good idea behind the theory of its use.
The million dollar question for me is if it's possible to trace the history of this specific instrument back any further ?
Iim under the impression that a good many would have been made and fitted. Perhaps in the intervening years studies and notes have been made that might give me a clue of it's past ?
Cheers Andy
That Aero Antique website has given me a good idea behind the theory of its use.
The million dollar question for me is if it's possible to trace the history of this specific instrument back any further ?
Iim under the impression that a good many would have been made and fitted. Perhaps in the intervening years studies and notes have been made that might give me a clue of it's past ?
Cheers Andy
Roughly, the 'beam' transmitted a radio signal consisting of dots to one side of the on course signal and dashes to the other side.
If you were right of course, you would receive dashes which meant drift left; if dots you must drift right.
As you got close to the beam, the dots and dashes would merge to become a continuous tone so you were on course.
If you were right of course, you would receive dashes which meant drift left; if dots you must drift right.
As you got close to the beam, the dots and dashes would merge to become a continuous tone so you were on course.
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That's a nice look into the history thanks.
Interesting to see they describe it as a Blind Approach Indicator.
This little titbit makes me think that at the time of use and the aircraft it was fitted in it's likely there wasn't any landing lights.
Cheers Andy
Interesting to see they describe it as a Blind Approach Indicator.
This little titbit makes me think that at the time of use and the aircraft it was fitted in it's likely there wasn't any landing lights.
Cheers Andy
Can someone explain how this instrument converted the audio signal to a needle presentation?
Can someone explain how this instrument converted the audio signal to a needle presentation
https://en.wikipedia.org/wiki/Low-frequency_radio_range
megan, thanks for the link. I had looked at various wiki pages, but I didn't think to look at the radio range page. I hadn't heard of the vibrating reed instrument before but this is not the same as the SBA instrument.
chevvron, can you post a link? I couldn't find the section you referred to.
chevvron, can you post a link? I couldn't find the section you referred to.
megan, thanks for the link. I had looked at various wiki pages, but I didn't think to look at the radio range page. I hadn't heard of the vibrating reed instrument before but this is not the same as the SBA instrument.
chevvron, can you post a link? I couldn't find the section you referred to.
chevvron, can you post a link? I couldn't find the section you referred to.
IFT, try this. On the dial pictured the two circular features are lights which light up when the aircraft passes over the relevant marker beacon during the approach, the "O" being the outer marker and the "I" the inner marker.
https://wiki2.org/en/Lorenz_beam
https://wiki2.org/en/Lorenz_beam
megan, here’s the section of the page you referenced that I’m interested in:
I am trying to find out how the indicator converts the audio A and N into what amounts to a Localizer signal.
chevvron, my problem is that I can’t find the section you quoted. Starting at the Home page, how do I drill down to the info?
In order to ease the workload, Lorenz later introduced a cockpit indicator that could listen to the signals and display the direction to the runway centerline as an arrow telling the pilot which direction to turn.
chevvron, my problem is that I can’t find the section you quoted. Starting at the Home page, how do I drill down to the info?
megan, here’s the section of the page you referenced that I’m interested in:
I am trying to find out how the indicator converts the audio A and N into what amounts to a Localizer signal.
chevvron, my problem is that I can’t find the section you quoted. Starting at the Home page, how do I drill down to the info?
I am trying to find out how the indicator converts the audio A and N into what amounts to a Localizer signal.
chevvron, my problem is that I can’t find the section you quoted. Starting at the Home page, how do I drill down to the info?
2) Select 'Forum Members area'. (you can sign on quite quickly if you're not already a member)
3) Page down to 'Airfield related infrastructure and associated equipment'
4) In this section select 'RDF/Radar sites'
5) From the list of threads, select page 3
6) On page 3, select 'SBA (Standard Beam Approach')
NB: If you're not already a member, it can become VERY addictive!!
