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From: John Smith on Aug 7, 3:38 pm
Dan: Too bad the americans had not developed HS Digital Checksum Error Corrected Voice Transmission Packet methods over spread spectrum... could have filtered the CW audio and went right on, would have pi$$ed 'em off in style! Oh well, too late for back then, but today we can! The only thing WRONG with this back-and-forth is Dan's claim of Disability from Vietnam. The Vietnam War ended in 1975, THIRTY YEARS AGO. Had he been in communications with the military in Yurp "after" that, he wouldn't have any "disability" since he would be on active duty. If Dan Jeswald got out of the military DUE to warfare in Vietnam, then his personal experience from Yurp military exercises is THIRTY YEARS OLD. Present-day, and back in the FIRST Gulf War times, U.S. land forces most definitely have COMSEC (COMmunications SECurity) which pretty well defeats old-style jammers. The first instance of that was the AN/PRC-119 family, "SINCGARS," which is a selectable digital-voice/data, single frequency or frequency hopper on 30 to 88 MHz. It became operational in the U.S. Army in 1989, first sets to Army in Korea. At frequency hops of 10 per second, it is virtually immune to standard (old-style) jamming and very resistant to "noise jamming." [it's damn hard to detect, let alone jam] Later ("SIP") versions available by the SECOND Gulf War ("Revenge of the Shrub") had fully built-in COMSEC (voice scrambler no longer an external box) and half the size of the original manpack. A QUARTER MILLION R/T sets (manpack, vehicular, airborne) have been produced to the end of 2004 and all fielded. The land forces use a variety of radios and pieces of the EM spectrum, NOT so totally dependent on HF as Dan would have you believe. For MOST of the message transmissions, those go through VHF, UHF, troposcatter, and microwave radio systems with microwave dominating the major relays through military comm sats...one reason why CENCOM could command the 2nd Gulf War from Florida. As to HF radios in the military land forces, the AN/PRC-104 family (20 W manpack through 400 W PEP vehicular) is a synth frequency control unit for a full 3 to 30 MHz span and with automatic antenna tuner (even in the manpack!) and direct connections to COMSEC boxes. Designed and built by Hughes Aircraft Ground Division, it became operational first in 1986. It will be replaced by the AN/PRC-150 family designed by Harris, called by them "Falcon II." The "150" is more resistant to jamming and has built-in COMSEC. What these very amateur "military analysts" don't understand is that the RUSSIAN comm equipment "sold" to Iraq in the 1st Gulf War ALSO HAD SS-LIKE RF SCRAMBLING. That was back in 1990, 15 years ago. [they also had very Russian armor in which they carried those NON-morse-code radios] As to the alleged "CW intel from behind the lines" BS spouted by a few in here back some 6 to 7 years, the U.S. Army had the (now obsolete and replaced with newer) UHF portables with built-in data, "chiclet" keyboards, LCD mini-screens and with three different portable antennas to shoot to the comm sats or to orbiting comm relay aircraft. None of this nonsense of easy-to-DF HF slow-speed "CW" where the RF was spraying in all directions from omnidirectional antennas. Data rate then was 1200 BPS and the antennas directional. Whatever the Russians do in amateur regulations is a FAR cry from what they field in their army...as modern as any even if they have meager maintenance and not as much of the good stuff as the US military has. "WE" know HOW to jam them, or at least most of what they have for radios...the reverse has NOT been true for at least 15 years. You can take my word of it or not. I didn't "stop" working in communications for any part of DoD after my Honorable Discharge in 1960. I've played with SINCGARS and entered enough hopsets through its touch-screen front panel. I would have personally liked to work on the PRC-104, at least in operational testing, but other contract work called. What I've remarked on in public here is FROM public information that anyone can get, on paper or electronically. Instead, we have all these other "military analysts" claiming ten kinds of "knowledge" (some allegedly personal) which, in all likelyhood, comes from Popular Mechanics or old TV shows. Even the "FAS" (Foundation of American Scientists) is behind the times with old data from the 1980s. Better than nothing, I suppose. One thing for sure, the Russian amateur radio regs are NOT formulated to "build up a pool of trained morsemen" to serve in their military for their national whatevers. Geez, if all these renowned AMATEUR military radio experts were telling like it is, the USAF recruiting posters would feature "Air Crews For B-17s and B-24s" and the USA would still have sojer pictures with pre-1940 'dish' helmets and lace-up leggings a la 1940. :-) Unless something new has come up, WT Docket 05-235 is NOT concerned whether or not the Russkies still test for morse code. The FCC doesn't regulate in Russia...any more than Stebie Wundermurine "regulates" Somalian radio. Whatever Russia cares to do after WRC-03 is THEIR concern, not ours. We and the Brits have to help them raise their mini-subs or record their interceptor comms as they shoot down Korean civil airliners (played back in front of the UN some time ago). On the other hand, a regular columnist at ANTENNEX website is Russian and they are NOT sticking with 1950s technology these days. But, there's some ruff-and-tuff commie sympathizers talking at ya, John, and don't nobody step in THEIR way! :-) Dosvedanya droog Ivan day off |
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