Translated by Tom Grandgent on 2/19/2010
Notes:

| Top-left selector:
周波数帯轉換器 = |
周波数 [しゅうはすう] (n) frequency (of waves), (P) 帯 [たい] (n-suf) band (e.g. conduction, valence), belt (e.g. Van-Allen, asteroid, etc.), (P) 転換 [てんかん] (n,vs,adj-no) convert, divert, (P) 器 [き] (suf) (1) device, instrument, (2) vessel, container |
| Bottom-left dial:
同調 = tuning |
同調 [どうちょう] (n,vs) sympathy, agreement with, alignment, conformity, tuning, (P) 蓄電器 [ちくでんき] (n) (electric) condensor |
| Bottom-right dial:
補整 = adjust |
補整 [ほせい] (n,vs) adjust (by supplementing) 蓄電器 [ちくでんき] (n) (electric) condensor |

| Top dial:
ヘテロダイン = heterodyne |
ヘテロダイン (n) heterodyne 調整 [ちょうせい] (n,vs) regulation, adjustment, tuning, modification, alteration, (P) 器 [き] (suf) (1) device, instrument, (2) vessel, container |
| Bottom dial:
心線 = line |
心線
- the conducting wire inside an electric line, cord, cable, etc. 抵抗器 [ていこうき] (n) electrical resistor |
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受信機 = receiver |
受信機 [じゅしんき] (n) (television, radio, etc.) receiver, (P) |

| 九四式五号 = Type 94-5 無線機 = wireless, radio, (possibly transceiver) 第, 号 = serial number 三二号型 = No. 32 昭和19年8月製 = mfg. August 1944 大阪 = Osaka |
無線機 [むせんき] (n) wireless, radio, transceiver 第 [だい] (n,pref) ordinal 号 [ごう] (n,n-suf) (1) number, edition, make, model, issue, part of that group, (P) 型 [かた] (n) (1) model, type (e.g. of machine, goods, etc.), (2) type, style, pattern, (P) 昭和 [しょうわ] (n) Showa era (1926.12.25-1989.1.7), (P)
(date
converter) 大阪 [おおさか] (n) Osaka |

受信機 = receiver |
受信機 [じゅしんき] (n) (television, radio, etc.) receiver, (P) 第 [だい] (n,pref) ordinal 号 [ごう] (n,n-suf) (1) number, edition, make, model, issue, part of that group, (P) |

Note: This text is written right-to-left, which is very unusual for horizontally written Japanese.
軍事秘密 = military secret 甫 = possibly the end
of |
軍事 [ぐんじ] (n,adj-no) military affairs, (P) 秘密 [ひみつ] (adj-na,n,adj-no) secret, secrecy, (P) 軍事秘密 [ぐんじひみつ] (n) military secret The character resembling |
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心線電壓 = |
心線
- the conducting wire inside an electric line, cord, cable, etc. 電圧 [でんあつ] (n) voltage, (P) |