原帖由 hsu01xy0 於 2008-4-1 09:39 發表
兩位學長說的:鐵片式天線,在學弟僅剩的一點模糊印象中,
應該,也許,或許稱作"鞭型天線"又稱為"短天線",
至於學長們提到的 "魚竿天線",我都叫他為就是所謂的增益天線,又稱為"長天線",型號應該是RC-292~~~
印象真 ...
報告hsu01xy0長官
為了響應長官你無私的奉獻
所以我也把我手邊的AN/PRC-77英文版諸元資料給打上來
看來我也洩漏機密囉(美軍的機密 )
Frequency range:
Low band - 30,000 to 52.95 MHz.
High band - 53.00 to 75.95 MHz.
Number of Channels:
920.
Channel Spacing:
50 KHz.
Types of Transmission and Reception:
Transmission-Voice and 150-Hz squelch tone.
Reception-Voice (no squelch); or voice and 150 Hz squelch tone.
Transmission and reception power requirements:
Transmission- 12.5 to 15 volts dc, 780 ma average.
Reception- 12.5 to 15 volts dc, 60 ma average.
Type of modulation:
Frequency.
Transmitter output power:
1.5 to 2.0 watts.
Type of squelch:
Tone operated by 150-Hz signal.
Distance range:
5 miles (8 kilometers) (varies with conditions).
Type of antennas:
Short antenna-Antenna AT-892/PRC-77 3 feet long, semi-rigid steel tape.
Long antenna-Antenna AT-271A/PRC 10 feet long, multi-section whip.
Power source:
Dry battery BA-386/U, BA-398/U, BA-4386/U,
or nickel cadmium rechargeable battery cassette.
Battery life (BA-398/U):
30 hours (with a 9:1 receive-transmit ratio).
RT-841/PRC Receiver-transmitter:
Dimensions-4" X 11" X 14" high.
Weight-13.75 lbs.
上面棕色字元便是hsu01xy0長官所說的77天線的美軍編號
**資料來源:個人所收藏之美軍AN/PRC-77技術手冊 |