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drPhibes

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Everything posted by drPhibes

  1. A bank of analog bandpass filters.
  2. Crimea, Ukraine and Bosporus in a map of the Caucasus area makes just about as much sense as including Finland in a map of the Alps... What you are asking for is a black sea map.
  3. Would you rather have bugs from the open beta in the stable branch or wait for things to be fixed? If you're impatient, switch over to open beta (using dcs_updater or SkateZilla's GUI).
  4. Looks great. Keep up the good work!
  5. A-A TACAN isn't necessarily the same in all cases. Yardstick, where two aircraft interrogate each other's TACAN (with a 63 channel offset between the aircraft) gives you range only. The A-A TACAN systems used in tankers are full TACAN beacons, which have the required additional systems for generating the bearing signals (amplitude modulation of the DME pulses in conjunction with north reference bursts, either with an electrically scanned antenna, or one with director elements rotating around the center antenna element). Receive only/RCV is the only TACAN mode that only gives you the bearing.
  6. ...and the USAF used "F" for the 117, while it should have been an "A" or perhaps a "B". TL;DR: don't expect things to be logical or consistent.
  7. Nobody is arguing that imperial (+nautical) units are "better" than SI units (because they clearly aren't; even some Americans realize that...), but they are the international standard in aviation, and nobody (with very few exceptions) use anything else. If you are going to operate in airspace shared with aircraft that use the international standard you simply use the international standard, regardless of how archaic and outdated the units of measure are. If your speedometer and speed limit signs match they work just as well if they are both km/h or furlongs per fortnight...
  8. The wavelength of blackbody radiation is inversely proportional to the temperature of the object, so MWIR would typically be suitable for detecting higher temperatures than those detecatble with a LWIR sensor (approx. -60 to +100°C).
  9. If that's what you learnt in college physics I suggest that you demand a refund. Thermal radiation IS electomagnetic radiation, just like UV, visible light, radio waves, gamma rays, x-rays etc. Thermal cameras typically operate in the LWIR part of the spectrum (λ = 8-14μm).
  10. Feet and nautical miles is the international standard in aviation, both civilian and military, regardless of whether the country in question uses SI or imperial units of measure. There are a few exceptions (Russia/CIS and perhaps a few others), but the fact that a country uses SI units for everything else does not mean that they would also do so in aviation.
  11. I played the guitar in 1994, lost interest completely, and didn't touch one until 2012 when i started playing again. Thet doesn't mean that I have been playing for 25 years. The same goes for my DIY tube amplifier project. It was started around 2013, but never finished. It has not been "in development" for 6-7 years.
  12. It depends on whether you use the the meteorological or astronomical definition (autumnal equinox) of autumn. The meteorological definition is when the normal average day temperature (measured at 0600, 1200 and 1800 UTC) is between 0 and 10°C and decreasing.
  13. No it hasn't. https://forums.eagle.ru/showpost.php?p=4038656&postcount=12
  14. Because the real-beam mapping mode shown in the Deka screenshots is something completely different than the GMTI, SEA, DBS and SAR modes that will be added to the F-18.
  15. First flight in 1987: https://web.archive.org/web/20120521030622/http://www.boeing.com/defense-space/military/fa18/fa18_milestones.htm
  16. The big problem here is that people are comparing componet accuracy (the gun, either bolted to a test bench or in an aircraft tied down during the test) and system accuracy, where the gun is fired from an airborne aircraft, where the recoil forces actually cause the aircraft to move by a tiny ammount. In very simple terms: the gun fires, which causes the aircraft to move, which causes the gun to point in a slightly different direction.
  17. Use the WPDSG function to set the selected waypoint as a target, and then you can change the JDAM mode from TOO to PP to store the coordinates as a PP target.
  18. The thing Zhukov was referring to wasn't whether or not radio signals can reach over the horizon (ionospheric reflection of EM waves has been known for decades), but the claimed "fact" that HAARP is some kind of weapon*. *) Hint: it isn't, regardless of what the many Alex Joneses out there may think.
  19. Ok, so you clearly have no clue what you are talking about. DC, as in a stable regulated voltage, does not generate EMI. The major part of all EMI emmitted from a PC is switching noise from high speed clocks and switch mode power supplies. And out of curiosity: what are your qualifications in this field, other than watching scaremongering videos on youtube?
  20. Gravity is not equal to magnetism :doh: Who said anything aboud gravity? It seems like you just proved your technical illiteracy by not knowing about the earth's magnetic field...
  21. It's the fancy new type of nuclear weapon where a conventioal explosion in Achinsk causes radioactive material to be released in Nenoks, 2800km away... Joking aside, is it time to introduce a "No conspiracy nuts allowed" rule on the forums?
  22. A metal (or other conductive material) fuselage does shield the pilot to a certain degree. Electromagnetic waves can't pass through a metal surface; instead they induce surface currents in the outer layers of the fuselage panels, where they are either dissipated through resistive losses, or re-emmitted from various parts of the fuselage. Some aircraft have canopies with thin metal films deposited onto the acryllic (PVD), which provides some shielding. A good example is the hinged canopies on the EA-6 (as opposed to the clear forward facing part), where this is done in order to shield the pilots from emmissions from the EW pods.
  23. This is incorrect. The reason "our" Harrier uses ILS and not proper AWLS/ICLS is because ED hadn't implemented it when AWLS was added to the Harrier. Hopefully Razbam will correct this at some time in the future. The current solution is simply a workaround. And technically, ILS and AWLS/ICLS are not similar at all (other than the fact that both are radio landing aids). AWLS is a scanning beam system operating at ~15GHz (similar to MLS, but in a different frequency bad), while ILS is operates at 108.1-111.95 (LOC) / 329.15-335 MHz (GP), generating a radiation pattern where the DDM (difference in depth of modulation of a 90Hz and 150Hz tone) varies depending on the distance from the course line.
  24. Which number is largest? 30 or 0,000350?
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