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Aircraft radios of yesteryear

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nuckolls.bob(at)aeroelect
Guest

Posted: Sat Aug 21, 2010 1:54 pm Post subject: Aircraft radios of yesteryear

At 04:02 PM 8/21/2010, you wrote:

  	  Quote: 	
		   Good Afternoon 'Lectric Bob.

  

 And prior to that ultra modern Mitchel VHF set, we used Bill Lear's portable in a small suitcase which transmitted on 3105kc and allowed us to receive the "Beam" on low frequency. It even had a built in loop antenna. We could rotate the whole radio and get a bearing to or from the station. With a little judicious maneuvering, we could figure out whether the station was ahead or behind us in a as little as ten minutes or so.

 	
    If you ever run across any pictures, literature or

     stories about that era, I'd be pleased to get

     links/sources. 

  	  Quote: 	
		    

 The biggest problem with it was finding a long wire antenna. With such an antenna, we could talk to a tower from as far as fifteen miles away. Great stuff. 	


    Yeah, I wrote and illustrated an Accessory Kit for

    Cessna to put a Sun H.F. transceiver  . . . 



  http://www.aeroelectric.com/Pictures/Radios/Sun_Air_2.jpg



    in the Military 185 (U17) aircraft at the Pawnee Plant.

    We had a fixed wire that ran from cabin top to vertical

    fin and then out to the right wing tip. Then a trailing

    wire in the tailcone. For folks interested in such things

    you can see the kit instructions at:



  http://www.aeroelectric.com/Reference_Docs/Misc_PDF/AK-U-17-3B.pdf



    I'd forgotten about a ground adjustable loading

    coil installation behind the baggage compartment

    for making the fixed wire match the various installed

    crystals. Of course, if one was flying in a situation

    that allowed use of the trailing wire, you could run

    it out and tune it by watching the panel mounted antenna

    ammeter. Pretty heady stuff for HF in a small

    airplane in 1968. 



 

    Bob . . .    [quote][b]

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BobsV35B(at)aol.com
Guest

Posted: Sat Aug 21, 2010 2:48 pm Post subject: Aircraft radios of yesteryear

Good Evening 'Lectric Bob,

  

 You may have recalled that most of the early straight 35 Bonanzas came from  the factory with an automatically extending and retracting trailing antenna. It  extended at around 100 MPH and retracted at the same speed when slowing down. It  can be seen on some of the advertising copy for the early machines. It had a  small wind sock cone that mounted between the stabilators on a mast about six  inches high. Next time you see a 1947 or 48 Bonanza take a look back there.  Chances are you will see the remnants of the mast where it was sawed off after  the trailing antenna was an abandoned. Unfortunately, an awful lot of them got  ripped off by catching on an airport fence when folks made their approach just a  bit too fast. The FCC did take away our 3105 frequency and designated 3023.5 in  lieu thereof. Not sure just when that was but I think it was about 1948.�  Back when we were using 3105, the air carriers were using 6210. When we went to  3023.5 the frequency for air carriers was changed as well but I have forgotten  what that frequency was.

  

 I will see what I can locate in some of my WWII text books.

  

 Happy Skies,

  

 Old Bob

  

  In a message dated 8/21/2010 4:55:53 P.M. Central Daylight Time,  nuckolls.bob(at)aeroelectric.com writes:

  	  Quote: 	
		  At 04:02    PM 8/21/2010, you wrote:

    	  Quote: 	
		  Good Afternoon 'Lectric Bob.

 

And prior      to that ultra modern Mitchell VHF set, we used Bill Lear's portable in a      small suitcase which transmitted on 3105kc and allowed us to receive the      "Beam" on low frequency. It even had a built in loop antenna. We could      rotate the whole radio and get a bearing to or from the station. With a      little judicious maneuvering, we could figure out whether the station was      ahead or behind us in a as little as ten minutes or    so.

	
    If you ever run across any    pictures, literature or

    stories about that era, I'd be    pleased to get

    links/sources. 

    	  Quote: 	
		  

The biggest problem with it was finding a long      wire antenna. With such an antenna, we could talk to a tower from as far as      fifteen miles away. Great stuff. 	


   Yeah, I    wrote and illustrated an Accessory Kit for

   Cessna to put a Sun    H.F. transceiver  . . . 



http://www.aeroelectric.com/Pictures/Radios/Sun_Air_2.jpg



      in the Military 185 (U17) aircraft at the Pawnee Plant.

   We had    a fixed wire that ran from cabin top to vertical

   fin and then    out to the right wing tip. Then a trailing

   wire in the    tailcone. For folks interested in such things

   you can see the    kit instructions at:



http://www.aeroelectric.com/Reference_Docs/Misc_PDF/AK-U-17-3B.pdf



      I'd forgotten about a ground adjustable loading

   coil    installation behind the baggage compartment

   for making the    fixed wire match the various installed

   crystals. Of course, if    one was flying in a situation

   that allowed use of the trailing    wire, you could run

   it out and tune it by watching the panel    mounted antenna

   ammeter. Pretty heady stuff for HF in a    small

   airplane in 1968. 



   

   Bob . . .  	  Quote: 	
		  



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  [quote][b]

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brucebell74(at)sbcglobal.
Guest

Posted: Sat Aug 21, 2010 3:35 pm Post subject: Aircraft radios of yesteryear

My A-35 1949 Bonanza (D-1730) had one. Came out the factory door June  1948.

  

 ;

 From: BobsV35B(at)aol.com (BobsV35B(at)aol.com) 

   Sent: Saturday, August 21, 2010 5:47 PM

 To: aeroelectric-list(at)matronics.com (aeroelectric-list(at)matronics.com)  

 Subject: Re: Aircraft radios of  yesteryear

 



 Good Evening 'Lectric Bob,

  

 You may have recalled that most of the early straight 35 Bonanzas came from  the factory with an automatically extending and retracting trailing antenna. It  extended at around 100 MPH and retracted at the same speed when slowing down. It  can be seen on some of the advertising copy for the early machines. It had a  small wind sock cone that mounted between the stabilators on a mast about six  inches high. Next time you see a 1947 or 48 Bonanza take a look back there.  Chances are you will see the remnants of the mast where it was sawed off after  the trailing antenna was an abandoned. Unfortunately, an awful lot of them got  ripped off by catching on an airport fence when folks made their approach just a  bit too fast. The FCC did take away our 3105 frequency and designated 3023.5 in  lieu thereof. Not sure just when that was but I think it was about 1948.   Back when we were using 3105, the air carriers were using 6210. When we went to  3023.5 the frequency for air carriers was changed as well but I have forgotten  what that frequency was.

  

 I will see what I can locate in some of my WWII text books.

  

 Happy Skies,

  

 Old Bob

  

  In a message dated 8/21/2010 4:55:53 P.M. Central Daylight Time,  nuckolls.bob(at)aeroelectric.com writes:

  	  Quote: 	
		  At 04:02    PM 8/21/2010, you wrote:

    	  Quote: 	
		  Good Afternoon 'Lectric Bob.

 

And prior      to that ultra modern Mitchell VHF set, we used Bill Lear's portable in a      small suitcase which transmitted on 3105kc and allowed us to receive the      "Beam" on low frequency. It even had a built in loop antenna. We could      rotate the whole radio and get a bearing to or from the station. With a      little judicious maneuvering, we could figure out whether the station was      ahead or behind us in a as little as ten minutes or    so.

	
    If you ever run across any    pictures, literature or

    stories about that era, I'd be    pleased to get

    links/sources. 

    	  Quote: 	
		  

The biggest problem with it was finding a long      wire antenna. With such an antenna, we could talk to a tower from as far as      fifteen miles away. Great stuff. 	


   Yeah, I    wrote and illustrated an Accessory Kit for

   Cessna to put a Sun    H.F. transceiver  . . . 



http://www.aeroelectric.com/Pictures/Radios/Sun_Air_2.jpg



      in the Military 185 (U17) aircraft at the Pawnee Plant.

   We had    a fixed wire that ran from cabin top to vertical

   fin and then    out to the right wing tip. Then a trailing

   wire in the    tailcone. For folks interested in such things

   you can see the    kit instructions at:



http://www.aeroelectric.com/Reference_Docs/Misc_PDF/AK-U-17-3B.pdf



      I'd forgotten about a ground adjustable loading

   coil    installation behind the baggage compartment

   for making the    fixed wire match the various installed

   crystals. Of course, if    one was flying in a situation

   that allowed use of the trailing    wire, you could run

   it out and tune it by watching the panel    mounted antenna

   ammeter. Pretty heady stuff for HF in a    small

   airplane in 1968. 



   

   Bob . . .  	  Quote: 	
		  



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tp://www.matronics.com/contribution">http://www.matronics.com/contribution



	
	


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