Fusprech. f - 1943 (Funksprechgerät f ) |
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A very compact, high-frequency transceiver - MOPA transmitter and heterodyne receiver. The same antenna, the same frequency and certain tubes are used for both transmitting and receiving. A very advanced type believed to be a Lorenz product. In field tests it gives practically the same results as the SCR-195, but the American set is simpler and of a more advanced design*. The set is contained in a metal case provided with a leather carrying strap. All seven tubes are employed when the set is operating as a receiver and just three are used when it is functioning as a transmitter. It is used with a loudspeaker and is provided with a special push button by means of which a tone modulation is transmitter for calling purposes Introduced in 1942 by Strassfurt Imperial, the Fusprech. f was mostly installed on armored half-tracks such as the Sd.Kfz. 234, 250, 251. * This opinion may be biased. |
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Specifications |
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YEAR INTRODUCED : |
1942 |
| MANUFACTURER: | Strassfurt Imperial |
FREQUENCY RANGE: |
(KHz) 19998 - 21473 divided into 60 x 25 KHz channels (German frequency numbers 341 - 400) for both transmitter and receiver. Tuning dial has 60 channels numbered 341-400, each representing 25 kHz) |
NUMBER OF CRYSTALS: |
None |
PRESET FREQUENCIES: |
None |
ANTENNA: |
Rod - 2 meter |
TUNING: |
(MO OR CRYSTAL) MO. The tuning dial has a graduated scale calibrated to kilocycles whose color codes agree with those of the band switch. |
SENSITIVITY: |
Excellent |
SELECTIVITY: |
Excellent |
POWER SOURCE: |
Dynamotor unit SEUa or SEUa1 which operates from a 12 volt storage battery at 5.2 amperes. Power requirements: |
SIMILAR SETS |
SCR-195, SCR-536a, SCR-610, Fusprech.a, Fusprech.d |
POWER OUTPUT: |
8 Watts |
TUBES (TYPE and NUMBER): |
7 total ( 6x RV 12 P 2000 (pentodes) and one RL 12 P 10) in the receive position, one Rl 12 P10 is used as AF output and six RV 12 P 2000 tubes are used as mixer, HF oscillator, 1st and 2nd IF amplifiers, detector and 1st AF amplifier; In transmit position, one of the RV 12 P 2000 tubes performs the function of MO and the RL 12 P10 that of power amplifier. A second RV 12 P 2000 serves to modulate the power amplifier. |
USE: |
Radiotelephone communication between reconnaissance armored cars and tanks. It is used only for voice communication. It can be used in nets with American AM radio sets within the frequency and distance range. |
TYPE OF SIGNAL: |
Voice only. |
RANGE: (MILES) |
3.5 approximately |
TO COMMUNICATE WITH: |
Fusprech.f, Torn. Fu. d3 (yes d3) |
| TO REPLACE IN PART: | |
TRANSPORTATION: |
Vehicular - mounted in reconnaissance cars and tanks. |
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The complete set. |
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Fusprech. f with cover. |
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The front panel. All control name plates are individually attached. |
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Inside the cover featuring instructions and a vehicular connection diagram. |
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The L.S. Fu. a speaker (manufactured in 1944) |
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Close-up of the manufacturer's data. |
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The male receptacle for the Fusprech.f output. |
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The correct SEUa Umformer |
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The Umformer with the lid opened. |
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The Umformer data plate - early 1940 manufacture. |
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The Fusprech.f-to-speaker connection cable. |
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The antenna connection system canned "Ant-Zuleitung r". This is the correct system to use with the Fusprech. a and d systems, but not Fusprech. f, which required an "Ant-Zuleitung i". |
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The "2k" box, closest to the antenna, and featuring the smoothing inductor. |
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The "2b" box, which is a part of several other types of matching systems. This box provides a disconnected female port to plug the Fusprech antenna output connector if another antenna is being used. |
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Close up of the intricate antenna connector. |
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The "2k" box opened. |
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Close up of the "2k" box interior. |
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The "2b" box interior. |
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