Military versus commercial antenna dictionary

[jbartos]

Please, is there any way one might align the following military antennas to commercial antennas:
AS-3775/A VHF/UHF/LOS
AS-3775/A VHF/UHF/L-Band
AS-3711 HF 2-6MHz
AS-3772 HF 6-30MHz
AS-3018/A UHF SATCOM
OE-424 EHF SATCOM
for purpose of knowing their electrical and physical data (dimensions and weight)?
[sig][/sig]

 

[BlackBC]

Check this website, they sell military antennas and have most of the specs online.

http://www.shakespeareproducts.com/military/catalog.htm

 

[jbartos]

Thank you for your information. Most of those antennae have been found scattered and hidden on websites. However, it appears that any suitable and up-to-date dictionary converting commercial antennae to military ones and vice versa does not presently exist. There is a book that attempted to describe military antennae in more detail, i.e.
Preston E. Law Jr. "Shipboard Antennas," 2nd Edition, Artech House, Inc., 1986

 

[lewie]

Are you sure the antenna for the 2-6 Mhz is the correct nomenclature? I think you may want the AS-3771 vice AS-3711.

 

[jbartos]

Comment: Both appear to be correct. Visit
1.

http://www.valcom-guelph.com/highfreq/oe416.html

for AS-3771B/U
2.

http://www.fas.org/man/dod-101/sys/ac/equip/an-alq-136.htm

for AS-3711

 

[VEBill]

Whirligig - an End Fire Array of Two Turnstiles

Anyone know of an prior art on this concept ?

The turnstiles are the usual crossed dipoles fed to produce CP. The End Fire Array is the usual one quarter wavelength spacing and 90 degree phasing to produce a uni-directional pattern. The combination of these two concepts will produce the Whirligig - an antenna that (aimed horizontally) would look a bit like a small Quad Antenna support structure less the wires.

It would be advantageous to orient it as an X rather than a cross. Less height, more symmetry and better circularity.

Obviously the relative phases could be fiddled to send RHCP or LHCP either forward or backward.

The application (for those that are curious) is UHF SatCom on aircraft where it is easy to provide coverage up, left and right; but difficult to provide coverage front and rear. With this Whirligig Antenna, the front and rear could be filled in quite easily to provide complete coverage for highly mobile platforms.

I haven't found any references to prior art, but I would not be surprized that someone out there somewhere has mentioned this concept before.

Email your comments or pointers to VE1BLL@rac.ca

 

[VEBill]

Sorry - posted to wrong thread.