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 Author  Topic: Another question for Al Ross re 80' Elco antenna sections
Drew Cook

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Drew Cook  Posted on: Jun 5, 2009 - 11:10am
Dr. Ross,

Do you know what the lengths of the (two?) sections of the telescoping radio antennae on the 80' Elcos -- the lower and upper sections -- were?


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alross2

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of alross2   Send Email To alross2 Posted on: Jun 5, 2009 - 1:22pm
Drew,

The ELCO parts manual states only that they are government furnished (catalog #MM-435X) and that they are interchangable with the rigid type (also government furnished). The TechSpecs manual for the 565 series doesn't give any lengths or much other radio-related info either.

Al


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Drew Cook

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Drew Cook  Posted on: Jun 6, 2009 - 7:12am
Thanks, Al.


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Jeff D

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Jeff D   Send Email To Jeff D Posted on: Jun 6, 2009 - 6:43pm
You might want to try contacting these people Drew:

http://www.premaxlp.com/about/history.html

A link on that page opens a 1944 "thank you" telegram from Rear Admiral Cochrane.

I had also found this ad:
Premax 1PG Antenna base for marine & naval HF Whip Antenna
This is a heavy duty antenna base for marine antenna applications. Premax made the whip antennas that were used with TCS radio Sets used on the WW 2 PT boats. This may be one of them.
This is a are rare item. They are now made by .A. Miller.
Condition: good used, $75.00
Shipping Weight: 10 Lb.



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Jeff D

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Jeff D   Send Email To Jeff D Posted on: Jun 6, 2009 - 7:06pm
I don't know if it has the PT antenna but a 1947 Premax manual is for sale:

http://cgi.ebay.com/Vintage-Premax-Antenna-Manual-1947-Police-Marine-Mobil_W0QQitemZ200201056814QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2e9ce9b22e&_trksid=p3286.m20.l1116



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Frank J Andruss Sr

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Frank J Andruss Sr   Send Email To Frank J Andruss Sr Posted on: Jun 7, 2009 - 3:56am
Drew

Although I can't remember where I saw this information, I recall the lenth to be somewhere between 12 and 18 feet fully extended. I am looking in my files for this and hope to locate this. I have nothing in my Elco files as to the lenth.


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Jeff D

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Jeff D   Send Email To Jeff D Posted on: Jun 8, 2009 - 4:21pm
Found this at http://www.ibiblio.org/hyperwar/USN/ref/PT-Manual/MTBM-4.html#C6:

Motor Torpedo Boat Manual
February 1943

Name.--Navy Model TCS radio telephone and telegraph transmitter and receiver.
Frequency range.--1. 5-12. 0 megacycles (1,500-12,000 kilocycles).
Output.--40 watts Key/CW; 20 watts voice.
Power supply.--Two dynamotors.
Antenna.--Whip type--20-foot vertical.



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Jeff D

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Jeff D   Send Email To Jeff D Posted on: Jun 9, 2009 - 12:20am
Here's one of the best images of the section joints I've seen, taken at Melville:





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PRJM3

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of PRJM3   Send Email To PRJM3 Posted on: Jun 9, 2009 - 4:33pm
From my pictures it appears that they were three section antennas. The picture posted by Jeff D. appears to be of a collapsed antenna with both 'collars' next to each other. I've cropped some pisctures of Ron 27 boats and left them somewhat large to hopefully retain details. The 'collars' don't have the small ring at the bottom of them as in Jeff's picture. The first section is slightly higher than the searchligt, about the same height as the short antenna (don't know its real name) aft of the searchlight. The second collar appears to be slightly higher then the top of the radome. A full height antenna is visible among the nested boats. In the last picture of the 361 the base of the antenna is obscured by a tarp canopy on the foredeck, but you can see the antenna joints relative heights. The monkey was named Tojo or Little Joe, later determined to be Josephine.













Randy McConnell (Randall J. McConnell III)

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Drew Cook

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Post a Reply To This Topic    Reply With Quotes     Edit Message     View Profile of Drew Cook  Posted on: Jun 9, 2009 - 5:06pm
Thanks for the info and photos, Jeff and Randy...


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