On 05/08/2023 17:38, a425couple wrote:
> from
> https://news.yahoo.com/russia-jamming-sophisticated-us-weapons-133427310.html
>
> Russia is jamming 'sophisticated' US weapons being used in Ukraine,
> making them useless, report says
>

The war that was supposed to be won in days is bogged down and the
Russians are taking heavy casualties going nowhere. The Ukrainians have
put the Kerch Bridge partially out of use again and their water supply
has been disrupted. Lets face reality here, as was said many years ago
amateurs talk about strategy, professionals discuss logistics. Ukraine
is now targetting and hitting key supply routes for the Russian Army
deep inside Russia itself.

This bridge does not just have enormous practical use but is symbolic.
Putin opened it by personally driving the first truck across.

Even worse for the Russians Ukraine is now targetting fuel depots in the
Crimea. Russia will soon have to face the reality of having a large
military in the Crimea that it cannot adequately supply, this is why the
Wagner group rebelled, troops that are cold, hungry and short of
ammunition do not perform well.
https://www.bbc.co.uk/news/entertainment-arts-66276788

"Keith Willshaw" wrote in message news:ub7gku$18uum$1@dont-email.me...

On 05/08/2023 17:38, a425couple wrote:
> from
> https://news.yahoo.com/russia-jamming-sophisticated-us-weapons-133427310.html

---------------------

https://pages.crfs.com/blog/how-to-deal-with-gps-jamming-and-spoofing

R.V. Jones' group was spoofing German radio location signals in WW2, as
spoofing to give false information is less easily detected than jamming.
When the Germans realized how thoroughly they had been deceived they
abandoned radio guidance, such as planned terminal guidance for the V-2.

On 12/08/2023 19:06, Jim Wilkins wrote:

>
> https://pages.crfs.com/blog/how-to-deal-with-gps-jamming-and-spoofing
>
> R.V. Jones' group was spoofing German radio location signals in WW2, as
> spoofing to give false information is less easily detected than jamming.
> When the Germans realized how thoroughly they had been deceived they
> abandoned radio guidance, such as planned terminal guidance for the V-2.
>

Indeed, in fact the spoofing system was so effective that the Germans
gave up on radio navigation completely. By 1944 the RAF was using B-17's
and B-24's to jam the systems used by the Germans to guide their own
nightfighters. The B-17 was chosen as it could operate at altitudes
above that which German Nightfighters could reach. By late 1944 the
German nightfighters had become the prey not the predator with Mosquito
nightfighters roaming the sky.

A standard landing in 1945 was to exit the cockpit when the aircraft was
still moving, the aircraft would be destroyed but the crew had a chance
of survival.

"Keith Willshaw" wrote in message news:ub93ut$1hj7a$1@dont-email.me...
....
By late 1944 the
German nightfighters had become the prey not the predator with Mosquito
nightfighters roaming the sky.

-----------------------
https://www.thriftbooks.com/w/night-fighter_cf-rawnsley_robert---wright/975001/item/56151350/#edition=66404236&idiq=56151350

from
https://news.yahoo.com/russia-jamming-sophisticated-us-weapons-133427310.html

Russia is jamming 'sophisticated' US weapons being used in Ukraine,
making them useless, report says

VIDEO: Why Russia's military is failing so far in UkraineScroll back
up to restore default view.
585
Tom Porter
Updated Fri, August 4, 2023 at 9:26 AM PDT·2 min read
The JDAM-ER, or Joint Direct Attack Munition-Extended Range, on an F-16
before a test at White Sands Missile Range in New Mexico.

Russia can disable US-made Ukrainian missiles because some use GPS signals.

Both sides are waging a battle to jam the electronics of missiles and
other weapons.

Russia's electronic warfare capability has evolved during the conflict.

Russia is disabling "sophisticated" missiles that Ukraine's Western
allies provided by scrambling their GPS coordinates, according to reports.

Bryan Clark, a senior fellow at Hudson Institute, a US think tank, told
BBC News that Russia's electronic-warfare capability had significantly
improved during the conflict with Ukraine.

He said that Russia was now deploying hundreds of small, mobile
electronic-warfare units along the front line, having previously relied
on large, cumbersome units that could be easily targeted.

Clark told the BBC that Russian technologies were able to jam missiles'
GPS coordinates, disable Ukrainian drones, and suppress Russian radar
signals that were used by Ukraine to identify targets to attack.

One such system, the R-330Zh Zhitel, is able to suppress satellite signals.

"Zhitel can jam a GPS signal within 30km of the jammer," Clark said.
"For weapons like JDAM bombs, which use just a GPS receiver to guide it
to the target, that's sufficient to lose its geolocation and go off target."

It's not the first time concerns have been raised about the
effectiveness of Joint Direct Attack Munition, or JDAMs, in Ukraine,
with the UK think tank The Royal United Services Institute in January
citing leaked US documents in which officials expressed concern that
Russia was jamming JDAM GPS coordinates.

JDAM bombs are among the weapons the US had provided Ukraine with and
can be launched by air to hit targets up to 45 miles away. Like many
long-range missiles, they rely on GPS coordinates to reach their targets.

They have a greater range than the HIMAR long-range missiles that
Ukraine used to drive back Russian forces in a counteroffensive last
year, The Defense Post reported.

They were also one of the weapons that Ukraine's Western allies hoped
could help Ukraine in its new counteroffensive to drive back Russian
invaders.

But Russian defenses have proven resilient against Western-supplied
weapons, with Western tanks largely ineffective in the face of the huge
minefields Russia has created to defend its positions in south and east
Ukraine. Western offensive tactics have so far not secured Ukraine a
decisive breakthrough.

The BBC reported that Ukraine is seeking to eliminate Russian
electronic-warfare units before it launches missile strikes in a game of
cat and mouse, or target them once they detect Russian attempts to block
missile coordinates.

Read the original article on Business Insider

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On Sat, 12 Aug 2023 14:06:44 -0400, Jim Wilkins wrote:

> "Keith Willshaw" wrote in message news:ub7gku$18uum$1@dont-email.me...
>
> On 05/08/2023 17:38, a425couple wrote:
>> from
>> https://news.yahoo.com/russia-jamming-sophisticated-us-
weapons-133427310.html

They may very well be able to jam the GPS receiver of a JDAM, but that's
not going to affect its primary guidance - the onboard solid-state INS.
It may not be "which pane of the window" accurate without GPS updates, but
I still wouldn't want to be near the intended target.

--
Peter Stickney
Java Man knew nothing about coffee