Midland 75-820 Transceiver Manual

							MODEL 75-820
40 CHANNEL PORTABLE MINI CB
WITH 10 CHANNEL WEATHER RECEIVE
5 MEMORY CHANNELS, MEMORY SCAN
ALL CHANNEL SCAN, INSTANT CHANNEL 9/19
HI/LO POWER, AUTO POWER SAVE
BACK LIGHTED LCD DIGITAL CONTROL SCREEN  
						

							THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.
OPERATION IS SUBJECT TO THE CONDITION THAT THIS DEVICE
DOES NOT CAUSE HARMFUL INTERFERENCE.  
Your 40 channel Portable CB/Weather Monitor represents the state-of-the art in high-
tech engineering. Designed for 40 channel  Citizen Band operation  plus 10 weather
channels, this compact package is big in performance. This unit  is a quality piece of
electronic equipment, skillfully constructed with the finest components. Surface mount
circuitry is all  solid - state, mounted on fiberglass printed circuit boards. It is designed
for many years of reliable, trouble-free performance.Your portable CB is under control
of a microprocessor resulting in enhanced features and performance. The microprocessor
controls not only the CB tuning but also dual watch, memory channels, weather monitor,
and a host of other useful features.
GETTING THE MOST FROM YOUR PORTABLE CB
Range of a CB is generally determined by enviromental conditions. Range will be
severly reduced when operating in a vehicle or metal building. Use of a mobile or base
antenna will increase range greatly. Do not leave batteries in the unit for long periods of
time, the batteries may leak and destroy the unit. Keep the unit dry and protected from
moisture. If problems occur always check the batteries and antenna.
FUNCTION AND LOCATION  OF THE CONTROLS 
						

							  1.Antenna connector: With BNC connector type. A mobile or base station antenna
(adapter required) can be used to extend range.
  2.“Squelch” Control: For the maximum receiver sensitivity, the control must be
adjusted exactly where the receiver background noise disappears.
  3.ON/OFF Volume Control.
In ‘’OFF’’ position your transceiver is off.  Turn this control clockwise to switch on
the unit. Turn the knob clockwise a little more to set the audio level, until you get a
comfortable sound level. 
  4.Multifunction backlighted display. This liquid crystal display has been enlarged to
show all of the operating modes.
A. Shows the selected channel number or operating frequency.
B. Indicates the received signal strength or the relative power of the transmit signal.
      C. RX: Indicates the receive mode is on.
D. EMG:  Icon appears to indicate the emergency channel 9 function is activated.
E. LOW:  Low icon appears when the low power function activated.
F. SAVE: Indicates the save function is activated. This is an automatic function to
increase battery life.
G. LOCK: Indicates the keyboard lock function is activated.
H. BATT: When this icon illuminates, it indicates the batteries are low and should be
replaced or recharged.
I. TX: Illuminates to indicate the unit is in the tx mode. 
						

							J. DW: Illuminates when the dual watch mode is enabled.
K. AM: Indicates the CB mode is activated.
L. “F”: Indicates the function button has been activated. The function mode allows 
use of the modes inprinted on the function buttons face.
M. “M/1”: Indicates the memory channel selection.
N. SCAN: Illuminates to indicate the scan mode is activated.
O. WX: When visible indicates your transceiver is in the weather receive mode.
Select the appropriate channel with the up/down buttons.
  5.Hand Strap Mount: Attach the included hand strap to this point.
  6. Mic/Spk: Plug in an optional speaker/microphone in this jack. The Midland model
22-410 speaker/mic or 22-430 throat mic with earphone is available from your
Midland dealer or directly from Midland.
 7. LIGHT button: Press and release will cause the display backlight to turn on. It will
automatically shut off after a few seconds.
  8.”LCR’’ button: Pressing this button will recall the last selected channel.
  9. “F” button: This is a dual function button. Press and release to activate the “M1-
M5”  memory selections or for memory programming. Press and hold will cause the
display to toggle between channel number and frequency readout. 
10. “PTT” button: Press to activate transmit. 
11.”Channel UP” button: To skip to the next channel in CB or weather mode. Keeping
this button pressed causes rapid incrementing.
12.“Channel DOWN”: To skip to the previous channel in CB or weather mode.
Keeping this button pressed causes rapid incrementing.
13.  “Control buttons”:
a.“M1 CH9/19 Button”; Press this button and release to select emergnecy channel 9.
Press  and release again and highway channel 19 will be selected. Press and release 
again will  cause return to the original channel.
To select memory channel 1; Press the “F” function button and release. Then press
the  “M1” button and release, memory channel 1 will be selected.
To program memory channel 1; Select the desired channel to be in memory 1. Press
and  release the “F” function button. Press and hold the “M1” button until a “beep” is
heard  and the M1 icon is displayed. The selected channel is now programmed in
memory 1.
b.  “M2 DW Button”; To program the 2 dual watch channels, select the first channel.
Press and hold the “DW” dual watch button until a “beep” is heard and the DW icon
begins flashing.  While the DW icon is flashing select the second channel, then press
and hold the DW button again until a “beep” is heard and the DW icon stops
flashing. The receiver  will scan between the 2 programmed dual watch channels.
To stop dual watch press the “DW” button. To resume dual watch press the “DW”
button again.
To select memory channel M2 press and release the “M2” button. 
						

							To program memory channel 2 follow the instructions for programming memory
channel  1, except substituting channel 2 for channel 1.
c. “M3 SC Button”; To start scan, set the squelch to mute the background noise. Press
and  release the “SC” scan button, scan will begin. The scan will stop on all channels
where a signal is received with enough strength to open the squelch. The squelch will
remain  stopped for a  few seconds after the signal disappears to allow time to answer
the call. To  stop scan press the SC button. Pressing the UP/DOWN or PTT buttons
will also stop  the scan.
  To select memory channel M3 press and release the “M3” button.
To program memory channel 3 follow the instructions for programming memory
channel  1, except substituting channel 3 for channel 1.
d. “M4 CB/WX Button”; To change between CB and weather receive, press and release
the  CB/WX button. To select weather channels press the up or down button.
To select memory channel M4 press and release the “M4” button.
To program memory channel 4 follow the instructions for programming memory
channel  1, except substituting channel 4 for channel 1.
e. “M5 Lock Button”; To lock out all button functions except PTT, press and release the 
LOCK button. To unlock, again press and release the LOCK button.
To select memory channel M5 press and release the “M5” button.
To program memory channel 5 follow the instructions for programming memory
channel  1, except substituting channel 5 for channel 1. 
						

							f. “M.SC  H/L Button”; To change between high and low power, press and release the
H/L button.
To scan only the 5 channels in memory locations 1 through 5, press the “F” function 
button and release, then press and release the “M.SC” button. To stop memory scan, 
press the up, down, or PTT button.
HOW TO OPERATE YOUR TRANSCEIVER FOR CB
1. Insert the antenna in the antenna connector.
2. Insert 6 alkaline or nic-cad batteries into the battery compartment, noting polarity.
3. Rotate the ON/OFF volume control clockwise to turn the unit on. Adjust the volume
for a normal listening level.
4. Adjust the SQUELCH control.
5. Select the desired channel by the up or down buttons.
An optional mobile adapter is available that will transform your 75-820 into a mini
mobile.
Check with your Midland dealer or the Midland factory.
Note: If the channel will not change, check that the “LOCK” button has not been
pressed. In this case, press the the “LOCK” button to deactivate this function.
To transmit: press and hold the PTT button, then talk into the microphone.
To receive: simply release the PTT button.
TO RECEIVE WEATHER
Press the WX, button then select one of the channels in your area from the 10 channels
available.
CAUTION: DON’T  EXPOSE THE DISPLAY  TO EXTREME HOT OR COLD 
TEMPERATURES
CARE OF RECHARGEABLE NI-CAD BATTERIES
Always follow the battery manufacturers recommendations for charging
and disposing of ni-cad batteries.
The following is meant as  general information regarding ni-cad batteries.
1. Occasionally allow the batteries to fully discharge before recharging. Full discharge
 will be indicated by the low battery indicator coming on during receive operation.
2. Always allow the battery to fully charge before using.
3. The above will prevent the batteries from developing “memory” which effectively 
reduces their capacity.
4. It is better to store ni-cad batteries that are discharged rather than charged.  
						

							SPECIFICATIONS CB
Channels 1 through 40
Power Output 4 watts nominal
Modulation 90% +/- 5%
TX Dist 
						

							LIMITED WARRANTY
Midland Consumer Radio Inc. will repair or replace , at its option without
charge, any Midland Mobile, high power portable, FRS, or Base Station Citizens Band
trancseiver which fails due to a defect in material or workmanship within one year
following the initial consumer purchase.
This warranty does not include any carrying cases, earphones, or telescoping
antennas which may be a part of or included with the warranted product, or the cost of
labor for removal or re-installation of the product in a vehicle or other mounting.  
Performance of any obligation under this warranty may be obtained by returning
the warranted product, freight prepaid, along with proof of purchase date, to Midland
Consumer Radio Inc., Warranty Service Department, 1670 North Topping Avenue,
Kansas City, Missouri  64120, or to any “Midland Authorized Warranty Service Station,”
or to the place of purchase (if a participating dealer).
Warranty information and the location of the nearest “Midland Authorized
Warranty Service Station,”  may be obtained by writing Midland Consumer Radio,
Warranty Service Department.
This warranty gives you specific legal rights, and you may also have other rights
which vary from state to state.
Note:  The above warranty applies only to merchandise purchased in the United States of
America or any of the territories or possessions thereof, or from a U.S. Military
exchange.  For warranty coverage on merchandise purchased elsewhere, consult the
supplemental warranty information included with this product or ask your dealer.
Midland Consumer Radio
1670 N. Topping
Kansas City, Mo. 64120
Printed in Thailand 
						

							 
Luma composite chroma  
 
Component  Video Connector  
 
 
DisplayPort Connector  
 
  Pin Number 3 - pin Side of the C onnected  Signal Cable (Cable not 
included)
1 Y (Luminance signal)
2 Pb (Color differential signal)
3 Pr (Color differential signal)
Pin 
Number   20 - pin Side of the Connected Signal 
Cable  
1 ML0(p)
2 GND
3 ML0(n)
4 ML1(p)
5 GND
6 ML1(n)
7 ML2(p)
8 GND
9 ML2(n)
10 ML3(p)
11 GND
12 ML3(n)
13 GND
14 GND 
15 AUX(p)
16 GND
17 AUX(n)
18 HPD
19 Re - PWR
20 PWR  
						

							 
HDMI Connector  
 
  Pin 
Number   19 - pin Side of the Connected Signal 
Cable  
1 TMDS DATA 2+
2 TMDS DATA 2 SHIELD
3 TMDS DATA 2 -
4 TMDS DATA 1+ 
5 TMDS DATA 1 SHIELD
6 TMDS DATA 1 -
7 TMDS DATA 0+
8 TMDS DATA 0 SHIELD
9 TMDS DATA 0 -
10 TMDS CLOCK
11 TMDS CLOCK SHIELD
12 TMDS CLOCK -  
13 Floating
14 Floating  
15 DDC CLOCK (SDA)
16 DDC DATA (SDA)
17 GROUND
18 +5V POWER
19 HOT PLUG DETECT
Flat Panel  Specifications    
Screen type   Active matrix  -  TFT LCD  
Panel type IPS
Screen dimensions   24 inches (24 - inch diagonal viewable image size)  
Preset display area:    
Horizontal   518.4mm (20.41 inches)  
Vertical   324.0mm  (12.75 inches)  
Pixel pitch   0.27mmx0.27mm   
Viewing angle   178  
Luminance output   4 00 cd/m  ( typ)  
Contrast ratio   1000 :1 (typ),  80,000:1 (Max, Dynamic Contrast on)  
Faceplate coating   Antiglare with hard - coating 3H  
Backlight   7  CCFL U - type system  
Response Time 6 ms panel typical (Grey to Grey)
Color Gamut   110 % (typ.)