Collectible Communications Corner
from A.R.F. Products, Inc.
Here is a rare and collectible Citizens Band radio. It was made by A.R.F. Products, Inc. in the late 70's. It had a retail price of $ 1000.00 (higher if the frequency counter option was installed), and was produced in small quantities. Estimates indicate less than 1000 were produced. It was made in America, using only American parts. The internal layout was similar to commercial communications gear; with different PC boards for each "Stage".
Here is the left-hand view of the front panel. The Microphone Jack is not shown, but it is to the left of the Mike Gain. The SAM switch controls the Servo Amplitude Modulation circuit; an enhancement similar to a processor that A.R.F. incorportated into this design. The Mike Gain controlled the FET Preamp in the base of a D104, which started it's life as a G-Stand. The special preamp was placed in it's base, and was powered from the radio, as well as having it's gain controlled by the front panel control. It is very desirable to get the proper Microphone to get the best performance out of the SAM speech processor circuitry incorporated in the ARF-2001 Scanning Transceiver. Above the normal controls on the bottom are switches for some unique features. The PA is a familar function, but the ARF-2001 added a twist; TALK BACK. This isn't the "10-4 Good Buddy" type of talkback used to set your Echo for maximum disturbance factor. It was used to allow the ARF-2001 to be used in an industrial or commercial site as an intercom; allowing the PA Speaker (mounted in another department) to be used as a microphone to communicate back to the office. In addition, the External Speaker switch allowed another listening device to be mounted and controlled via the front panel. To the right of the External Speaker switch is the familar Noise Blanker (NB) switch. One more to the right is a feature labeled AMSIL for AM Silencer. This was an A.R.F. Products exclusive that would mute any AM (or carrier based signal) when the set was operated in the SSB Mode. It is impressive to hear it eliminate all hetrodyne, beeps, boops and Billy-Bobs on SSB so only a Sideband-Based signal would pass. Can you imagine a Sideband Squelch control that actually worked? This feature made this a reality. The switch to the right of this feature allowed the SWR to be monitored and was used in conjunction with the SWR / RF / Signal Strength meter. The other meter allowed Monitoring the percentage Modulation and Calibrating the SWR forward level.
In the center of the rig is a status window that has indicators for Transmit, High SWR, AMSIL and Receive. Below that is a Dimmer control for illumination level and a CALibrate control for setting the SWR amd Modulation percentage reference level. To the right of that is the freqiency display which displays the Channel number. It also functions as a digital clock. There was a factory option for a 5 digit frequency counter module that could be installed here to replace the clock/channel display. Below the display are the Mode and Scan switches. Each have an illuminated tip which changes color dependent on the position of the switch. The Scan function could seek either Busy or Open channels as an aid in finding either a clear channel or a channel in which a conversation was in progress. The Keypad to the right allows direct channel entry, programming or accessing the 10 memory channels, changing the scan rate or direction, last channel recall or immediate jump to channel 9 for Emergency traffic. Below the Keypad is an Antenna switch to allow front-panel control of two different antenna systems. The power switch toggles the display from channel readout and ON to digital clock and OFF
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