Can't answer your question but I do know that A-4 hump was for the ALQ-51
deception repeater designed to counter the NVN SA-2 Fansong track-while-scan
radar for tracking and guiding the Guideline surface-to-air missile.

Fortunately the Navy had built a thousand ALQ-51s for the A-3D Cold War SIOP
mission. USAF had nothing available for their F-105s and F-4s except the
ALQ -76 broadcast jammer which was effective only if the carrying planes
were flown in rigid formation over the threat areas. If just one plane
drifted out of formation it could be identified and shot at with the above
SA-2 system. For the USAF photo-recce RF-101s flying solo over NVN they came
to us looking for single aircraft protection - we gave them the ALQ-51.

During the Navy's Vietnam war we installed 13,000 sets of ECM equipment in
over 3,000 Navy and Marine aircraft, spending money like it was going out of
style! Nothing being too good for the fleet!

WDA
CDR USN Ret.

end



wrote in message
...
I have been trying to find out how many hump=backed A-4Es there were?
So far with no results. Any one have an idea. If you check the books
about the A-4 there is a complete absence of info about how many A-4Es
were fitted with the Avionics hump. Being and old AK, at one time, I
would have thought that such information would have been in the A-4E
IPB. Does anyone know? Walt

--
Posted via a free Usenet account from http://www.teranews.com