foxbat155

SPO-15 wasn't designed for Saphir radar at all. Sorry, but this is bull<profanity> story..... This system was created for attack aircrafts....and the first Soviet aircraft fitted from oem with SPO-15 was Su-17M3 in 1976......

You have very small knowledge about Tu-154's navigation system which have nothing to do with Mi-8. Tu-154 had TKS-P2 inertial platform, NVU-BZ navigation computer (analog), DISS-03 doppler navigation radar, GROZA M-154 meteo-navigation radar, KURS-MP2 or KURS-MP70 radio navigation system (RSBN short range, RSDN long range, SP-50M or SO-68 landing system, VOR, DME, ILS) and as a back up automatic radio compas ARK-15M x2. That was typical dead reckoning system for first half of 70's, with correction from radio navigation systems and later in mid 80's with additional correction from sat nav systems. In the same time most of B727 had only ADF, VOR, DME, even not INS. Only one customer SIngapore Airlines had B727 with INS from oem, LTN-72, which wasn't nothing better from BNK-154 (Tu-154's navigation complex), only had more digitalization. Similar situation was with early B737. Other thing is, that Tu-154 was specific aircraft because in Soviet Union was considered as a simple and robust working horse. You should make comparision with IL-80 or Yak-42 nav systems. Soviet electronics was bigger and heavier (around 20-25%) but not neccesary worse.

Exactly the same, navigation computer unit, model M, program 2204.

Most likely CWU-M(2204), because this unit is typical for WP export aircrafts.

Not....theoretically, all variants with RP-21M radar can use Kh-66 missile. So, MiG-21PFM, modernized PF, M, MF. Another thing: Kh-66 never had name Grom, even Kh-23 didn't had that name. Yugoslav variant of Kh-23 produced under Soviet licence had name Grom.....

Yes, for Czechoslovakia....

Not really... You mistaken few thing here. Poland during signing a contract for SU-22M4 delivery didn't intended use of those aircrafts as a recce platforms. Situation changed after withdrawal from service Su-20R, Air Force decided to modify 7 aircrafts to use recce pods (bort numbers 3508, 3306, 8205, 3304, 9615, 3816, 3920). Here was a problem, Poland had KKR-1, the oldest variant of this recce pods family, originally intended for Su-17M2 aircrafts. Su-22M4 had originally only KKR-1TE-54 pod(Soviet aircrafts were able to carry at least 7 variants of KKR pods) which was different in few details from old KKR-1. In order to use those old pods on the Su-22M4 was needed to do some modifications, pod's power/communication cables need to be connect a bit different way compare to KKR-1TE-54, new cable connection fairing need to be done and new type of control panel in a cockpit (Poland didn't had them at all). All mods were done locally in a service workshops. All serial Su-22M4 were ready to hung original KKR-1TE-54 pod, here on the photo lugs (green circle) for pod suspending and cable connector door (red circle), you can clearly read "KKR" description, photo shows underbelly of a aircraft bort number 3216 which never carried KKR pod during service in PolAF: Here photo of the same part of aircraft number 3620:

Quote from tire-strut suspension model development report: "As an example of the model’s accuracy, the main wheel of the Mi-38 (a variant of the Mi-8) was taken as a reference." Mi-38 a variant of Mi-8?. Are you serious guys?. This level of accuracy reveals a complete lack of accuracy.....

Photoshop, this is Romanian Air Force MiG-29A, serial number 2960535404. Those aircrafts are still rotting over there, you can check on the Google Earth. https://www.google.pl/maps/place/Mihail+Kog%C4%83lniceanu,+Rumunia/@44.3574172,28.478535,2669m/data=!3m1!1e3!4m6!3m5!1s0x40ba8a30a9018359:0xee3fc8b301356e39!8m2!3d44.3701439!4d28.4652673!16s%2Fm%2F02861x5?entry=ttu&g_ep=EgoyMDI0MTIxMS4wIKXMDSoASAFQAw%3D%3D

That's ok, please keep in mind, that my intention wasn't lecture you. Yes, you right, kind of mental shortcut.

Like I written before, HuAF were called those aircrafts officially MiG-29B, do you think they were doing this for joke? Here official page of Hungarian Armed Forces: https://honvedelem.hu/hatter/multidezo/in-memoriam-racz-zsolt.html Repulomuzeum Szolnok, official HuAF museum (in the middle of the page): https://www.repulomuzeum.hu/Tikuldtetek/BartaEndre/BE_katasztr/BE_katasztr.htm For me this is enough evidence. About IFF, Hungarian aircrafts have oridinary old SRZO-2M system what is typical for this export variant (MiG-29B), original Warsaw Pact MiG-29A aircrafts have mix of Parol/SRO-2 systems, similar to early Soviet MiG-29's. This is easy to recognize: beside KOLS sensor you have triple SRO-2 antenna, under fuselage between A-037 radalt antennas you have triangle orange (or very rare green) Parol system antenna.

Hungarian Wikipedia: https://hu.wikipedia.org/wiki/Magyar_Légierő Hungarian air shows always describes those aircrafts as a 29B: Photo portals described them as a 29B aswell: https://www.jetphotos.com/photo/11160372 https://www.airliners.net/photo/Hungary-Air-Force/Mikoyan-Gurevich-MiG-29B/5250897/L?qsp=eJxtjbEOwjAMRP/FcxbUFoVsdGGEgR%2BwHAORShvZHlpV/XdCKjGxnd473a1A02g8233JDAGUUegFDjIKvhXCCpiEBB/Woybaa953nfuJC48s/xWEpvXtyYFOYv1SDiIan4k4G0fY%2BVUiy1exUn1%2Blp1DCSy3mqE5Fh6T5gHrBhumAbbtA/fsPro%3D https://www.planephotos.net/photo/18859/Mikoyan-Gurevich-MiG-29B_18/....

Well, Hungarian Air Force called them MiG-29B (9.12B).....Yefim Gordon, although great publisher, made many small mistakes in his books.

Hungarian aircrafts were 9.12B model.

You right, search antennas block unit spins with a speed of 80 revolutions per minute, this gives 360 degrees swept every 0.75 seconds ( 60:80=.75 ). Of course when the target is on the radar level, return signal is given by both antennas and then the position of the target symbol on the screen should be refreshed every 0.35 sec. My mistake.