Electronic combat is a tough game to play," says Col.
Richard Hellier, Commander of the 366th Tactical Fighter Wing at Mountain Home
AFB, Idaho. "Except it's not a game."
Electronic combat is a difficult concept to grasp. Because
of its "electron-vs.-electron" nature, it can't be seen or touched.
With the exception of destroyed enemy radar emitters, there is no physical evidence
after an electronic battle. Success in the electronic battle, however,
determines the success or failure of the overall mission.
Electronic combat takes many forms, but the primary tactics
employed to get a force package of fighters or bombers into a target area is a
combination of radar equipment destruction, signal elimination, and jamming
to achieve radar suppression.
Airborne jamming began during World War II when aluminum
strips called chaff or "window" were thrown out of bombers by the
bale to confuse German radars. Today, jamming (obliterating radar returns by
more powerful emissions on the same wavelength) is more complex, simply because
of the larger number of emitters working on a multitude of frequencies.
Individual aircraft carry self-protection jammers (and
chaff, too) into combat to ward off radar-directed antiaircraft artillery
(AAA) and air-to-air and surface-to-air missiles (SAMs). Jamming over a wide
area to mask an incoming strike package from enemy radars, though, requires the
power of the Air Force's Tactical Jamming System (TJS), the EF-111A Raven.
Radar suppression was a response to Soviet-built SA-2 SAMs
and "Fan Song" radars that the North Vietnamese used to down American
planes in 1965. Eighty-nine days after initial development, four North American
F-l00Fs modified with radar homing and warning receivers and other equipment
arrived in Thailand to begin "Wild Weasel" operations against the radars
and SAM s. After a rocky start, the Weasel program developed into an
outstanding success using Republic F-105F and F-105G and McDonnell Douglas
Radar suppression was described by one Vietnam-era pilot as
"three‑dimensional chess where cheating is legal." It is the same
today. "The Wild Weasel fundamentals haven't changed since Vietnam,"
notes Col. Bill Payne, Vice Wing Commander of the 37th TFW at George AFB,
Calif. "Electronically, there is a world of difference."
Different But the
While targeting and jamming are quite different, there are
many similarities. At the top of the list, both missions are dangerous.
The Wild Weasel crews play a continuous cat-and-mouse game
with enemy radar, trying to get it to "come up" (turn on) so the electronic
warfare officer (EWO) in the F-4G's backseat can find the site and destroy it,
or to make the radar operator so fearful of attack that he does not turn on his
"If we get the radar to shut down, we're doing our job,
even if it is just for the minute or so we're there," says Lt. Col. Les
Moore, Assistant Deputy Commander for Operations for the 37th TFW. "They
turn off, and the force package can get in."
The Soviets have developed successive generations of
increasingly sophisticated radar, AAA, and SAMs. This has forced the Weasels to
operate at lower and lower altitudes. "We've had to go lower since
Vietnam, often as low as 100 feet," says Capt. Tom Finke, an EWO with the
37th TFW's 561st Tactical Fighter Squadron. "The front-seater has no time
to look inside [the cockpit]. Make a mistake and in two seconds you are in the
The EF-111As, meanwhile, are unarmed. The Ravens are just as
susceptible as the Weasels to ground threats. Unlike the F-4Gs, which carry
air-to-air missiles, the EF-111s don't have any means of defending themselves
except for a terminal jammer and speed. "At 600 knots, EF-111s are not
lucrative targets," says Capt. Greg Menke, an instructor EWO with the
390th Electronic Combat Squadron at Mountain Home AFB. "Speed is
A second similarity is that both missions are task-intensive
and task-specific. When standard F- 111As were redone as Ravens, all navigation
and communications equipment was moved from the right-seater's station to the
center console. This allows the aircraft commander to do everything necessary
to fly the plane during the height of combat while the EWO tends to the
"In the F-4G, the backseater is the key guy," adds
Colonel Moore. "He determines the order of battle. It's really
EWO-intensive. 'Weaseling' is a team-oriented concept. We are tied to the
force package in a supportive role. We don't just go out and destroy radars. We
have to be in support of some specific objective."
Another "given" is that nothing in electronic
warfare is as constant as change. "All electronic warfare is essentially
reactive," notes Colonel Hellier. "We see a potential adversary
develop a capability, and we have to move to counter it."
For electronic combat to be effective, the Weasels, Ravens,
and other aircraft, such as EC-130H Compass Call communications jammers, have
to be used together. But that highlights the limited numbers—forty-two EF-111s
and fewer than 130 F4Gs--of each of the electronic warfare assets. "We
don't try to spread the Weasels out along the whole FEBA [Forward Edge of the
Battle Area]," says Colonel Payne. "We want to mass our forces in one
area at the proper time."
The combination of scarce airframes and demanding missions
requires that the Weasel and Raven crews be among the most experienced in the
Air Force. In the past, an EWO needed at least 500 hours to become a Weasel,
and pilots for both the F-4Gs and EF-111s needed at least 1,000 hours coming in
the squadron door. These requirements have been lowered slightly, but not much.
At George, crews go through the Replacement Training Unit
(RTU), the 562d Tactical Fighter Training Squadron, which takes an average of
four months. The 562d TFTS also trains crews for the other Wild Weasel
units—the 52d TFW at Spangdahlem AB, West Germany, and the 3d TFW at Clark AB
in the Philippines.
Mission-qualified F-111 crews go through two levels of
training before becoming full-fledged Raven operators. "It takes one year
to [prepare] a mission-ready crew member," says Lt. Col. Rich Meeboer,
the 390th ECS Commander. "Even then, he is not really ready—we are just
scratching the surface." The 390th ECS is also the EF-111 RTU. There is
only one other Raven squadron in the Air Force—the 42d ECS at RAF Upper
Close coordination is needed between pilot and EWO in both
airplanes. Thus, a crew is paired off more or less permanently. A pilot and EWO
in the two operational Weasel squadrons at George, for example, will fly with
each other more than seventy percent of the time.
Weasel and Raven crews both have the same basic objective—to
disrupt the Soviet Integrated Air Defense System (IADS). The goal is to get a
radar emitter to "go autonomous," that is, to break out of the chain
of radars that are linked to provide a coordinated defense. Once isolated, the
radar can be dealt with. If the radar is destroyed, it is no longer a threat.
If the radar is jammed or shuts down, that creates a hole for the strike
package. Either way, the effectiveness of the entire IADS is degraded.
Opening holes in the FEBA is the primary task for the F-4G
and EF-111 crews, but both also train to go to the target with the force package.
Europe will be an electronic jungle, and once the force flies through the first
layer of defenses, the Weasel and Raven crews will be needed to go against
threats both en route and surrounding the target.
Intelligence is vital for every operation, but it is
paramount in the battle of electrons. "We will not send out Weasels
without good, up-to-date intelligence," says Colonel Moore. Adds 1st Lt.
Paul Hylton, the 390th ECS's Intelligence Officer, "Electronic warfare
intelligence is just a little different. We have to tell our crews not just,
'There is a target here.' We have to tell them what kinds of radars, how they
operate, and what frequencies they operate on."
How They Operate
The Wild Weasels operate in hunter-killer teams of two
aircraft, an F-4G with an F-4E at George and Clark and an F-4G with an F-16C at
Spangdahlem. (The latter combination may be the wave of the future.) The F-4G
"hunters" find the emitters with their equipment and then launch
ordnance, or the information is passed to the "killer" aircraft,
which can't find the emitters on their own but can certainly attack them.
The weapon of choice is the Texas Instruments AGM-88
High-speed Antiradiation Missile, or HARM. With a range of more than ten miles,
HARM gives the Weasel crews a true standoff capability. The nearly
fourteen-foot-long missile can be launched from a level delivery and greatly
expands the working area for the Weasel crews. "The AGM-88 is a great
weapon," says Maj. Walt Michalke, a pilot with the 561st TFS at George.
"You launch it, and there's a pretty good chance of its hitting what you
want it to hit."
HARM's only negative is that it is not overabundant. That
leaves the older, less reliable but more numerous AGM-45A Shrike to be used by
the "killers." In the inventory since Vietnam, Shrike has a range of
about three miles, which brings the aircraft closer to the SAMs and AAA. A
"loft" delivery, where the "killer" pulls up and launches,
gives the AGM-45 a little more range.
If a war lasts long enough for the Weasel crews to run out
of HARMs and Shrikes, the next weapon to be used would be the AGM-65D Imaging
Infrared Maverick. Principally an antitank weapon, Maverick's devastating accuracy
would work well on a radar. After that, it's down to iron bombs and directly
overflying the target, which is a method that crews would just as soon avoid.
The heart of the EF-111A is the AN/ALQ-99E jamming system, a
version of the ALQ-99 used in the Navy's EA-6B Prowler. The receivers and
antennae for this system are located in the "football," the blunt pod
on the tip of the aircraft's fin. The transmitters are housed in the
"canoe" on the belly. The processors and other equipment are
permanently installed in what was the F-111's weapons bay.
Unlike the system in the EA-6B, which requires three crew
members to operate, the EF-111's jamming system is much more automated and
requires only one EWO. The Intelligence Support System (ISS) is a computerized
program that provides information about radars in the area where the Raven
crew will be working. Before the start of the mission, ISS data are fed into
the Mission Data Generator (MDG) and then loaded into the aircraft via Raymond
Through the use of the MDG, the Raven's computer system can
determine what radar is "up," its priority as a target, and how to
jam it. The computer can jam automatically, or the EWO can jam manually. The
EWO also has the option of jamming other emitters as the situation dictates.
Where there is an air-to-air threat, the EWO will let the computer take more
of the work load so he can get his head out of his console and help the pilot
look for airborne "hostiles."
There are three primary types of jamming. Standoff jamming
blankets a number of emitters to mask friendly forces. Its primary advantage is
to keep the EF-111s away from the thick of enemy defenses. Close-in jamming
obscures radars in a specific area to open a corridor for the strike package
and increases the Raven's exposure to surface threats. The third type is escort
jamming, wherein the EF-111ls protect the strike package all the way to the
target, as in the 1986 USAF/Navy reprisal raid on Libya.
Preparing to Go
Maintenance for the F-4s (and the EF-111s as well) is a
labor-intensive activity. "You are definitely a crew chief on an
F-4," noted TSgt. Mark Mantz, a crew chief with the 37th TFW's 563d
Aircraft Maintenance Unit. "You know you will have to work hard. On some
newer aircraft, the crew chief is a glorified gas-station attendant, but not
All of the George F-4Gs are 1969 model F-4Es that were
converted to Weasels, so while some of the electronic equipment is new, the
airframes and most of the electronics are not.
One major problem is parts. "I have to spend a lot of
time on the phone trying to get spares," says SSgt. Charles Clark, the
assistant NCOIC maintenance supply liaison for the 37th TFW. "We have to
get some things out of AMARC [Aerospace Maintenance and Regeneration Center
at Davis-Monthan AFB, Ariz., where old aircraft are stored]. Getting parts for
the G-models is particularly hard. It gets hairy at times."
Likewise, the EF-111 airframes are old. The F-111As, from
which the EF-111s were modified, were built in 1966-67, but Grumman did not
make the electronics modifications to the aircraft until the early 1980s. The
electronics are of a newer, modular type and are fairly easy to repair or
replace. Finding parts for the airframe is a problem, but such parts are more
plentiful than those for the F-4, which the Air Force is phasing out of the
Despite the hurdles, the maintenance sections for both
units are getting the job done. The Fully Mission Capable (FMC) rate for the
37th TFW's aircraft was 52.8 percent in 1982. Last year the rate was 82.6
percent. The Mission Capable (MC) rate, which allows some system degradation,
is around seventy-seven percent for the EF-111s, a dramatic increase from just
two years ago. These percentages come despite the EF-111s' having among the
highest utilization rates in the Air Force. The F-4Gs also see a great deal of
New technology is one reason matters have improved. The
Weasel Attack Signal Processor (WASP) part of the APR-47 system that was
recently installed in the F-4Gs is much more reliable and easier to fix than
the APR-38's Homing and Warning Computer (HAWC) it replaces. It is also easy
to change the software to keep the system current. The AGM-88 can be
bench-tested with a single connection to the DSM-160 computer, which in minutes
can run a complete diagnostic test on the missile.
There are also many easier, smarter ways of doing things.
"We have to assemble the AGM-45s in the field," says MSgt. Stephen
Cotta, Assistant Chief of the 563d Combat Munitions Unit. "It's like a
big Erector Set. The guidance and control sets have to match up or the missile
won't work." The HARMs come as all-up rounds—just add fins.
"We are doing very well, maintenance-wise," says
Col. Robert "Slick" Andrews, Deputy Commander for Maintenance at
Mountain Home. "Dedicated people make it happen."
The keepers are rewarded for their efforts in several ways.
At George, if a squadron meets its sortie goal for a month, the AMU gets the
day off. Both the 37th and 366th TFWs offer orientation rides as an incentive
to the maintainers. "When deployment season comes, our guys are ready to
go," says Capt. Lee Cherry, officer in charge of the 390th AMU at Mountain
Home. "We go to Korea, Puerto Rico, and Europe. We thrive on that."
Deployment is not just an occasional thing with these two
units. The Weasel and Raven crews participate in every Joint Chiefs of Staff
exercise and in every Red Flag and Green Flag exercise at Nellis AFB, Nev. The
Ravens deploy overseas periodically and are frequent guests at Navy exercises,
adding a new wrinkle to what the Navy electronic warfare players usually see.
Ready for Anything
Another unit at Mountain Home that spends lots of time on
the road is the 392d Electronic Combat Range Squadron. This small, specialized
unit functions primarily as the ground "aggressor" force for the
Raven crews, but it also trains many other units. The radar operators simulate
the Soviet IADS and take it personally when they get jammed or
"destroyed" by strike packages on training missions.
The unit has established one training range at Saylor Creek,
Idaho, with another under construction, but the 392d ECRS also goes on
approximately thirty deployments a year. These deployments range from two
people and no equipment at a Red Flag exercise to as many as sixty people and
twelve radars at the Dugway Proving Ground in Utah for a joint force deployment.
The squadron has nearly thirty different radar systems with
which to train. "All of the radars are American-made," says Lt. Col.
Carl Newman, the Squadron Commander. "The part of the operation that
looks like the Soviets' is the RF [radio frequency] part. But we have a tough
time keeping them up because some are so old." The Soviets seldom retire
anything, but merely pass it on to their client states. A 1949 model MPS-9
radar given to the Soviets under World War II Lend-Lease is still used in some
parts of the world, so today's crews still have to train against them. Another
radar set used by the unit was found in a museum.
The unit regularly works with the intelligence section to
keep current in the Soviet order of battle. Intelligence also helps with
aircrew ground training. "We prepare the crews to fight a war in a
different part of the world each month, so they are ready for anything,"
says Lieutenant Hylton. "You also see a lot of pilots and EWOs coming in
to do self-study."
Mission academics at both George and Mountain Home is taught
under contract by civilians working for McDonnell Douglas Training Systems Inc.
At George, there is a G-suit/G-seat Weapon Systems Trainer (WST) operated by
CAE Link. The simulator doesn't allow for two-ship or tactics work, but does
provide highly realistic mission simulations for aircraft procedural training.
There is a WST at Mountain Home, too, and the EWOs also have the opportunity to
practice jamming procedures on an elaborate part-task trainer (PTT).
There are a number of changes being planned for the Air
Force's electronic warriors. The 37th TFW is scheduled to be merged with the
35th Tactical Training Wing (the F-4 "schoolhouse"), also at George.
Once the consolidation is complete, the new wing is tentatively scheduled to
move to Mountain Home, probably in 1992. This will mean that most of the
Stateside electronic assets will be in one place. George AFB is expected to be
To make room for the Weasels, the two F-111A squadrons at
Mountain Home are scheduled to be transferred to Cannon AFB, N. M. While
Mountain Home has the ramp space for the expected F-4s, new facilities will be
needed. "There appears to be justification for another runway, given the
number of aircraft movements per hour," says Col. Ron Kroop, the base
civil engineer. (Mountain Home has only one active runway.) "The
number-one priority is housing and feeding the 2,000 additional military
In the meantime, incremental changes are being made to the
Weasel and Raven aircraft. The EF-111s will be getting new instruments,
terrain-following radar upgrades, global positioning system equipment, and a
new inertial navigation system under the Avionics Modernization Program for
all F/FB-111s. The EF-111s are now getting the uprated Pratt & Whitney
TF30-P-109 engines. A program to integrate HARMs into the EF-111 to increase
its lethality (and survivability) is in the idea stage.
Several electronic upgrades have been proposed under the
Weasel Performance Upgrade Program, but the Air Force is increasingly turning
its attention to a Follow-on Wild Weasel platform. Several candidates have
been proposed, including derivatives of the McDonnell Douglas F-15E, General
Dynamics F-16D, and the Panavia Tornado, which would be built in the US by
Rockwell. A decision is expected in the early 1990s.
One thing is certain. "The [electronic combat threat]
situation will do nothing but get worse," concludes the 390th ECS's
Captain Menke. "We can't disregard it. We have to get better with it. It
is not going to go away."
Daily Report: Read the day's top news on the US Air Force, airpower, and national security issues.
Daily Report: Read the days top news on the US Air Force, airpower, and national security issues.
Daily Report: Read the day's top news on the US Air Force, airpower, and national security issues.
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