86 lines
3.4 KiB
Plaintext
86 lines
3.4 KiB
Plaintext
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<20><><EFBFBD><EFBFBD>Ŀ <20><><EFBFBD><EFBFBD>Ŀ
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1 o<> . <20><><EFBFBD> 24 <20>o
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2 o<> U <20>o
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3 o<> P <20>o
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4 o<> D <20>o P8
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5 o<> <20>o P7
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6 o<> 8 <20>o P6
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7 o<> 5 <20>o P5 <20><><EFBFBD><EFBFBD><EFBFBD> P0-P8
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8 o<> 8 <20>o P4 PROGRAMMBLE PINS
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9 o<> <20>o P3
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10 o<> <20>o P2
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11 o<> <20>o P1
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12 o<> 13 <20>o PO
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<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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Al pins on this Chip are used except pin 19 which is
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Grounded. This should leave you to some Conclusion!
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You Should cut the trace on this pin and install a
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4.7k Resistor for Conversions! the following Conversion
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Information Pertains to the Early Uniden 858 Chassis!
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The Radios Covered are The President Washington, Grant
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Teaberry Stalker 1& II, Courier, Robyn, Cobra 138XLR &
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139XLR.
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CONVERSION:
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Lift pin 19 by cutting it's Trace and add a 4.7k Resistor
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Refer to fig.2 Connecting leads as Shown will give you in
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the Center Postion 1-40 and Frequencies to 27,805 with some
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below the band channels from 1-8 postions on your Channel
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Selector.
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Note: Some of the Newer set both AM & SSB now use the Circuit
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Shown.this circuit functions okay with the Pin 19 Coversion
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but will not work on the other pins because they have done
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away with the Isolation Resistors and Caps! and use the
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Channel selector to Ground the pins. If You Apply VCC to a
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Pin the Diode just passes it to Ground. On these sets follow
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the Diagram and Jump the Diodes and add 4.7k resistors to
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each Address pin.
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<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
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<20> <20> FIG. 2
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Vcc +4.68v <<3C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>oĿ o<><6F><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>> pin 18 or other pins
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<20> <20> <20>
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1n34A Diode<64><65><EFBFBD><EFBFBD>> <20><><EFBFBD> <20>
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<20> o <20><>> o <20>
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<20> <20>
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<20> <20>
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Chassis Ground <<3C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>o o<><6F><EFBFBD><EFBFBD><EFBFBD><EFBFBD>> Pin 19 of 858
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<20> <20><><EFBFBD><EFBFBD><EFBFBD>Ĵ <20> ( Cut Trace which
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4.7k Resistor<6F><72><EFBFBD><EFBFBD>> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Grounds pin 19
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DPDT First.)
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CENTER
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OFF
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SWITCH
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<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ DPDT Center off Switch
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VCC+4.68v <<3C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵo<C4B4>Ŀ o<>
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<20> <20> <20>
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<20> <20> <20>
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1n34a Diode<64><65><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>> <20> <20>
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<20>o <20><><EFBFBD><EFBFBD>>o<>
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<20> <20>
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<20> <20><><EFBFBD><EFBFBD>Ŀ <20> <<3C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>4.7k Resistor
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<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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Ground <<3C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>o o<><6F><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>>to one address pin
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<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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Cut Traces to Isolate pins (22 21 20 18 17 16 15 14 & 13)
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Cut the trace Grounding pin 19( install 9 such swiches and
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do away with the Channel selector! One to each Address Pin!
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to 1 side
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of Switch
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<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
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4.7k Shunt <20> .<2E><>
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Switched in<69><6E><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ 858 <20><>
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<20><>o<EFBFBD>o<EFBFBD>o<EFBFBD><6F><EFBFBD>o<EFBFBD>o<EFBFBD><6F>o<EFBFBD>o<EFBFBD><6F><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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<20><>/\/\/\<5C><>x <20> <20> <20> <20> <20> <20> <20>
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<20> <20> <20> <20> <20> <20> <20> <20> <20>
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<20> <20><><EFBFBD>> x <20> <20> <20> <20> <20> <20> <20>
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<20><><EFBFBD>Ŀ <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ
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<20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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to 1 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Channel Selector Sw.
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side of Switch
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VCC may now be Applied to Raise Pin or Not added to Ground
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Pin.
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