RF Cafe Software
About RF Cafe
1996 - 2022
BSEE - KB3UON
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...
All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.
My Hobby Website:
Try Using SEARCH
to Find What You Need.
There are 1,000s of Pages Indexed on RF Cafe !
|October 1945 Radio News|
These articles are scanned and OCRed from old editions of the Radio & Television News magazine. Here is a list of the Radio & Television News articles I have already posted. All copyrights are hereby acknowledged.
D-Day occurred on June 6, 1944. It was the day that Allied forces stormed the French coastline with overwhelming numbers of battleships, landing craft, bombers, fighters, and personnel. It broke the German stronghold on mainland Europe and marked the beginning of the end of Hitler's dominion. These photos are the first official releases of radar imagery before and during the D-Day* invasion at Normandy. Pre-invasion reconnaissance radar plots show a sparsely populated coastline and English Channel. White areas that indicate radar targets were concentrated mainly in city regions. On the day of the invasion, white returns nearly saturate the displays due to the incredible presence of all the aforementioned war machine elements. Even the soldiers' presence contributed to the return because of all the metallic hardware being carried - guns, ammo, radios, helmets, bayonets, canteens, etc. Less than a year later, on May 8, 1945, the Western world was celebrating what is now known as V-E Day (Victory in Europe).
Thanks to Terry W. for providing this article.
Radar Plots the Invasion
By Eugene Mason
Presenting for the first time historical radar photos of the Normandy beachhead invasion. Radar has proven to be the greatest technical development of this war.
Fig. 1. Normandy beaches looked like this in the radar scopes of Eighth Air Force bombers during the pre-invasion reconnaissance flights. Despite solid clouds, coastline and built-up areas of the various towns showed up clearly.
The Normandy beaches looked quiet and peaceful (Fig. 1) during a pre-invasion reconnaissance flight. The cities of Le Havre and Cherbourg are clearly visible in the scope. And the characteristic French seacoast is strongly etched. The same beaches on D-Day (Fig. 2) look much different. Every dot on the oscilloscope represents one or more invasion craft in the Channel. A few of the white blobs represent planes flying low over the water. Seen from a height of many miles, the radar-equipped plane was about 35 miles from the French coast, its position indicated by the brilliant center spot. Strong elements of the invasion fleet are massed just off shore. But in every direction can be seen the great mass of sea and air power thrown into the D-Day offensive. The radar-equipped plane has passed over the invasion fleet (Fig. 3) and, at a lower altitude, is about to cross the coastline. The plane, on a bombing mission ahead of the newly established bridgehead, will use radar to locate strategic military objectives. Even though the pilot and bombardier can see nothing, the radar operator can tell them where they are. Before crossing the coastline, the radar operator flips a switch on his set to obtain a greatly magnified picture (Fig. 4) of the actual bridge-head. The many white dots and blurs - though difficult to distinguish near the center of the scope - are clearly discernible as invasion barges, boats, and ships. These are historic pictures - tiny white blobs of light on the face of an oscilloscope that attest to the might of Allied sea and air power.
|Fig. 2 - Same beaches on D-Day as those shown in Fig. 1. Plane has moved to within thirty-five miles of the coast. Its position indicated by bright spot in center of scope. Invasion fleet (smaller blobs and grains) is clearly visible massed just off shore. Fig. 3 (center). Even though pilot and bombardier can see nothing. Radar operators can tell them just where they are and when to drop their bombs. The photograph shows that the plane has lust passed over the invasion fleet and is about to cross the coastline. Fig. 4 (right). Radar operator has turned a switch to obtain a magnified exact picture of a small part of the coastline.|
* The U.S. Army website historical page is not linked because the historical revisions dictated by rampant political correctness
Posted May 10, 2013