[Milsurplus] U.S. Navy ECM gear in WWII?

[Bob Camp]

Hi

It’s low transmit power radar with low gain antennas ….you don’t need a lot of power to jam one. 
A fairly simple swept MOPA device in the “target” would do the trick. A one watt device 
could do the trick. Even “way back then” you could get something like that going pretty
quickly. 

Bob

> On Nov 12, 2017, at 6:10 PM, Hubert Miller <Kargo_cult at msn.com> wrote:
> 
> I don't see how the weapon could be countermeasured anyway. Neither the front lines at the Battle of the Bulge or the Okinawa suiciders were situations
> where any kind of high power VHF transmitter could be employed. Of course, the U.S. still had to consider the possibility. 
> I am wondering right now if in the production of the fuzes, there was any step that involved checking or setting the operating frequency, or if standard
> parts were just used and call it good, knowing the superregenerative circuit did not have to adhere closely to any rigid frequency limits anyway. 
> -Hue 
> 
>> Subject: [Milsurplus] U.S. Navy ECM gear in WWII?
> 
>> I was reading about the radio proximity fuze that the U.S. developed in WWII & was used to great effect in the Battle of Okinawa as well as in Europe. As the fuze was an oscillator coupled to an antenna it radiated a low power CW electromagnetic field in the 180-220 MHz range. What caught my attention was U.S. concerns that these signals could be intercepted by the enemy & this information used to develop countermeasures against the shells. As a countermeasure, this source stated that the Navy transmitted spoof signals to confuse any enemy radio intercept activity. Despite the fact that these fuzes were declassified in 1970, I am not familiar with the equipment that might have been used to generate these spoof signals. Any one have any insights to this?
> Jack
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