quote]原文由
電台報務 於 2009-12-21 13:56 發表
引用:
原文由 cathay_cat1971 於 2009-12-14 10:00 發表
這種古董真空管機器操作起來,宛如有點"攔截密碼戰"電影情節裡的味道耶!建議
將它送進軍史館展示,千萬別報廢啊!
在上述網站中有AN/GRC-9,我當年在馬祖時 ...
嗯~AN/GRC-9經歷了韓戰的經典名機,更是收藏家的最愛~
AN/GRC-9 Radio Set ("Angry Nine")
The AN/GRC-9 (often called the "Angry Nine") was a 2-12 MHz, AM/CW,
low power transportable radio set which can be vehicular mounted
(as the AN/VRC-34). It was fielded in the late 1940s and used through
the Korean War and later in the 1950s. The AN/GRC-9 replaced the SCR-284,
SCR-288 and SCR-694 radios and was in turn replaced by the AN/PRC-62
and AN/PRC-74.
The complete AN/GRC-9 is a set of components for operation on Continuous
Wave (CW), modulated CW (MCW) or AM from 2 to 12 MHz across three bands.
According to TM 11-263 (1956), range is 30 miles on CW, 20 miles on MCW
and 10 miles on AM (voice). Operation in a vehicle had shorter ranges,
about half the above.
The main AN/GRC-9 component is the receiver-transmitter unit, RT-77/GRC-9,
operating on two pre-set frequencies determined by crystal.In addition to
the electronic components, the complete system includes canvas bags, whip
antenna mast with counterpoise 1/2 wave sloping wire (and erecting kit),
straps, a T-17 microphone, J-45 telegraph key for CW operation, HS-30
head- set and LS-7 speaker.
