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30 Dec 20, 11 tweets, 6 min read
@t3narrat0r Here is a good place to start:

THE OFFICIAL HISTORY OF THE R.A.A.F.
DIRECTORATE OF TELECOMMUNICATIONS AND RADAR
BY W/CDR, G. F. GATES

IONOSPHERIC ORGANISATION.
groups.google.com/g/rec.aviation…
@t3narrat0r This document is hard core ionospheric radio propagation. It was published in 1948 and refers back to WW2 in sections.

Circular of the Bureau of Standards no. 462: ionospheric radio propagation
archive.org/details/circul…
@t3narrat0r This is the best single source on the Interservice Radio Propagation Laboratory's work on H/F radio in WW2

Developments in Radio Sky-Wave Propagation Research
and Applications During the War*
Proceedings of the IRE ( Volume: 36, Issue: 2, Feb. 1948)
ieeexplore.ieee.org/document/16976…
@t3narrat0r This article is the single best H/F radio in S. Pacific article you will find.

Combat Information Center Magazine
Aug 1944 issue
"farewell to communication failures"
From the Original Manuscript prepared by S/L A. L. Hall, RAAF
See pages 7 thru 11
maritime.org/doc/cic/cic-44…
@t3narrat0r This is a 1948 Australian paper that constructed a model of local radio/radar ducting.

Radio Superrefraction in the Coastal Regions of Australia
Kerr, F. J.
Australian Journal of Scientific Research, Series A: Physical Sciences, vol. 1, p.443

articles.adsabs.harvard.edu//full/1948AuSR…
@t3narrat0r The point about the the 1948 superrefraction article is that Rabaul had frequent ducting events for the Japanese radar network to learn from.

One of the Rear Admirals at Rabaul in 1943-44 was the Navy base force commander at Okinawa.
@t3narrat0r This link is to a Aussie history of a pair of American strategic high frequency communications posts during WW2. It is useful in that it has figures for the WW2 solar cycles in the Appendix 2 part of the document.
bdars.org.au/wp-content/upl…
@t3narrat0r @threadreaderapp unroll
@t3narrat0r The document at the links below is the US Government National Defense Resources Committee Report on Radio Propagation in WW2

Radio Wave Propagation: Consolidated Summary Technical Report of the Committee on Propagation

catalog.hathitrust.org/Record/0014819…
@t3narrat0r Navigate through the Hathitrust document to pages 327 thru 335 on the ionosphere and 474 thru 480 on siting radar arrays and direction finding systems.

Pages 458 and 459 are how one estimates ship sizes with radar returns given varying atmospheric conditions as determined...
@t3narrat0r ...by Coast Artillery Experimental Establishment, England.

Page 460 has technical statistics on major radars, IFF and communications systems used in WW2.

I hope you find these sources of some small help.

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More from @TrentTelenko

Trent Telenko Profile picture
26 Nov 20
@James1940
@Alan_Allport
@JonathanBoff
@AdrianGregory20
@HGWDavie
@mark4harrison
@ProfGSheffield

1/ This thread is addressing why invading Italy was Strategically & Operationally necessary for the Allies in WW2.
2/If you are going to look at the latest historical research Battle of Sicily, you have to start with Dr. Gregory Hospodor lecture here:

Bitter Victory? The Allied Campaign for Sicily Revisited
Image
3/And this for the Italian land campaign.

Cirillo makes clear Southern Italian air bases were gold for the strategic bombing campaign.

The Ground War in Italy (2014)
Col. Roger Cirillo
Image
Read 18 tweets
Trent Telenko Profile picture
28 Oct 20
@KtunaxaAmerika @crusaderproject @bermicourt @sommecourt @NavalAirHistory @JanTattenberg @JeffCRutherford @mike_bechthold @AlexFitzBlack @GeorgeMCR01 @garius 1/ Okay, I went to the US Army's Signal Corps branch pub, the Army Communicator, at this link, to pull the history of WW2 German Army NVIS use to answer some challenges from yesterday.

See URL:
cybercoe.army.mil/AC/archive.html
@KtunaxaAmerika @crusaderproject @bermicourt @sommecourt @NavalAirHistory @JanTattenberg @JeffCRutherford @mike_bechthold @AlexFitzBlack @GeorgeMCR01 @garius 2/ The next few tweets use information and screen captures from articles in the Winter 2004 issue of the Army Communicator that you can find at the previous link.

The German Army was using NVIS HF radio on armored cars in 1935.
@KtunaxaAmerika @crusaderproject @bermicourt @sommecourt @NavalAirHistory @JanTattenberg @JeffCRutherford @mike_bechthold @AlexFitzBlack @GeorgeMCR01 @garius 3/ By 1938, the Germans were moving to much bigger armored cars to support HF radios with both NVIS & Skywave antennas, so they could execute long range reconnaissance in support of their mobile doctrine.

The FuG-10 radio used for NVIS HF coms was not small nor light.
Read 23 tweets
Trent Telenko Profile picture
25 Oct 20
1/ This is another thread on the Azeri Drone War on Armenia.

I've seen a recent open source analysis of what the Azeri drones are doing to Russian air defense equipment in the hands of Armenia.
2/ The Azeris, with or w/o the assistance of Turk instructors, have killed a number of 9K33 Osa AKM / SA-8 GECKO systems, a number of S-300PS / SA-10B GRUMBLE battery components, and a 9K331 Tor M2KM / SA-15D GAUNTLET.
3/ 1st, there is a claimed GPS/inertial configuration for the larger MAM-L munition that allows it to glide to 14 km range from an unspecified altitude, likely the typical operating altitude for the TB2 of ~18 kft.

This is stand off range for Osa.

See:
roketsan.com.tr/en/product/mam…
Read 16 tweets
Trent Telenko Profile picture
20 Oct 20
@DWB55 Mr Burns,

I've quite a few maps of the New Guinea campaign.

Few to none do what you just did there...you show the Japanese side with naval combatants & transports of less than 1,000 tons.

MacArthur Reports has a few such maps.

US Naval historians would rather slit their...
@DWB55 ...wrists in a long warm bath before consulting that resource and almost none have looked at the Japanese & Australian small ships and barges role in the New Guinea campaign.

Doing so is not career enhancing for what it reveals about the WW2 USN narrative.
@DWB55 When you compare your map to this one. You get the air-sea-land context of the Japanese projecting power and guarding sea lines of communication.

Here we are at over 75 years since these combats and it's only now such maps are made?
Read 5 tweets
Trent Telenko Profile picture
18 Oct 20
1/There has been a great deal on hypersonic weapons recently on Twitter.

This thread is my take on them & why Russia, China and the USA are going there.
2/I agree and disagree with one of the better recent twitter threads on hypersonic weapons.

Hypersonic weapons are yet another overhyped weapon system liked the F-35, Zumwalt DDG and Ford class carrier.

3/That does not mean deploying them would not aid the national security interests of China, Russia & the USA.

I have touched on Chinese interests with this tweet.

Read 26 tweets
Trent Telenko Profile picture
18 Oct 20
@LarrySchweikart @GoroOuter If Sir Henry Phelps Brown & Sheila Hopkins did not address the massive shift in industrialization by electrification covering 1920 - 1965 they have a methodological problem.

The shift from line shaft & belt mechanical power transmission to electrical had huge productivity plus.
@LarrySchweikart @GoroOuter The widespread use of electric motors small enough to be connected directly to each piece of machinery meant any location with a concrete slab and electrical connections could be a factory.

It also made factories built post 1920 both easier to relocate and harder to destroy.
@LarrySchweikart @GoroOuter This is why the Soviet Union could relocate it's factories during the German invasion of 1941.

It is also why strategic bombing of German factories did not degrade production like pre-war air power theorists expected.

I've written about that here --
chicagoboyz.net/archives/58334…
Read 21 tweets

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