SP8WJT/HF8V - RED ARMY RADIOTELEGRAPH SIMULATOR - SP8WJT/HF8V ==================== | POLISH AIR FORCE | ==================== ver. 4.29 OVERVIEW: Air-Ground Network, 1935 original procedures [1]. CALLSIGNS: All in $$# format, dynamical FREQ: Asummed in typical range used during this period (low HF). 3451 4987 FORMAT: 3F CODES: It seems special 6xx codes were used, meaning unknown, but from given example it can be deducted that: 631 = QTC 619 = QRV Looking for more info. PROB: sec/2 SIMULATION: Air-Ground Network, 1935 original procedures [1]. Calling (dynamic) and short static QTC. SOURCES: [1] Instrukcja Łączności Wojsk Naziemnych Z Lotnikiem, Szkoła Podchorążych Łączności, Zegrze, 1935, http://zbrojownia.cbw.wp.mil.pl:8080/Content/3377/305892_INW_305892.pdf Extracted Radiotelegraph Procedure (polish): hf8v.cba.pl/rars/documentation/pol_af_proc.png LOOKING FOR: 6xx service codes