[ARC5] More ZB

[Mike Hanz]

Wayne kindly sent me a photo of what he was talking about, and I placed 
it here:

http://aafradio.org/sidebar/F4U-1_radio_controls.png

What is fascinating is that the control is a simple linear tube with a 
1" black plastic knob coming out of a long helical slot on the left side 
of the tube, the slot rotating around the periphery of the tube 
approximately 90 degrees.  There appears to be a detent at each end to 
lock the knob in either fully opened or fully closed position.  No scale 
to show 0 or 100%, or anything between.  I've never seen anything like 
it, either for a loop or for a whip antenna.  Anyone have any idea?  
Keep in mind this would be a Navy-unique control.  The associated radio 
controls only indicate an ARR-2 and an ARA range receiver in terms of 
navigation.  The ARR-2 whip is not adjustable, so that only leaves some 
manipulation of the range receiver antenna, a requirement that I have 
never run into before.  Naturally, there is not a single word about the 
control tube in the description of radio controls...:'(

73,
Mike  KC4TOS

On 7/9/2011 1:22 PM, Mike Hanz wrote:
> On 7/9/2011 12:37 PM, Robert Eleazer wrote:
>> The manual shows a view of the radio controls in the cockpit, including a a tube mounted along the longitudal axis of the aircraft fuselage, and located just above the  radio control boxes, identified as "Navigation Antenna Control."  I have no idea what this could be.  Any ideas?
> Not without a more comprehensive description of its appearance...