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- 6 - 

CONTROLS AND FUNCTIONALITY 

(Letters correspond with image on the following page)

 

 

A.

 

POWER – 

Turns the power (AC) on and off to your tuner, with the optional 

remote system this switch must be left in the “OFF” position.  

 
B.

 

STEREO – 

Switches your tuner from Stereo to Mono and vice-versa. Switching 

to Mono will often clean up noisy stereo transmissions and aid in delivering 
quiet listening to weaker signals.  

 
C.

 

I.F. BANDWIDTH – 

 When 

BW 1 

is selected your tuner is in the wide IF 

(Intermediate Frequency) bandwidth setting. This setting produces the best 
sound possible where strong adjacent channel interference is not an issue. 
When 

BW 2 

is selected the tuner is placed in the “Narrow” bandwidth setting, 

this setting produces optimal sound performance where adjacent channel 
interference is a factor. 

 

D.

 

MUTE – 

In the “ON” position, a limit is now placed on your tuner. While scaling 

up and down the FM dial, weak stations will be overlooked so that no alarming 
noises will be heard while looking for programs. We recommend that with the 
optional remote system you leave the Mute switch in the “ON” position.  

 

E.

 

TUNING KNOB – 

Rotating this knob allows you precise control of the fine 

tuning of the FM signal you are listening to. Slight de-tuning of the tuner may 
aid in eliminating measures of multi-path or other atmospheric conditions that 
may affect the sound quality of your reception.  

 

DISPLAYS AND METERS 

(Letters correspond with image on the following page)

 

 
F.

 

MULTI-PATH METER – 

This meter indicates multi-path (multi-path is the same 

FM signal being received by your antenna and tuner at two different time 
intervals). Your multi-path meter should read zero. If this meter reads more 
than zero, move your antenna to a different location or rotate your antenna so 
that your meter reads zero. If this does not correct the problem a better or 
different antenna system may be required, please visit the 

Reception 

Techniques

 section in this manual. 

 
G.

 

CENTER TUNER METER – 

Indicates the setting of the tuners front end in 

relation to the station you are tuning to. In normal situations this needle should 
be tuned to the central point of this meter. 

 

 

Summary of Contents for MD 90

Page 1: ...Magnum Dynalab MD 90 90R ANALOG FM TUNER INSTRUCTION MANUAL...

Page 2: ...FUNCTIONALITY 6 DISPLAYS AND METERS 6 IMAGE OF MD 90 7 CHECKING OUT YOUR MD 90 8 TUNER REMOTE OPTIONAL 9 IMAGE OF RC1 REMOTE 10 TROUBLESHOOTING 11 RECEPTION TECHNIQUES 12 Antenna Cabling 12 Types of...

Page 3: ...of your FM reception with the highest degree of consistency available in the industry To insure that all specifications on our tuners are met at ALL frequencies we manually align our tuners front end...

Page 4: ...E SHIPPER UNTIL YOU HAVE BEEN ASKED TO DO SO DO NOT DISCARD THE PACKING MATERIALS AND CARTONS Should there be a necessity to return the unit for any reason it must arrive safely and suitably packaged...

Page 5: ...ohm to 75 ohm balun transformer 4 Make sure that the center conductor of the cable is properly inserted into the connector If you do not possess an antenna attach the temporary wire enclosed in box t...

Page 6: ...eard while looking for programs We recommend that with the optional remote system you leave the Mute switch in the ON position E TUNING KNOB Rotating this knob allows you precise control of the fine t...

Page 7: ...ter This meter is calibrated to never hit 10 this is done to protect the meter mechanism I FREQUENCY DISPLAY Displays the station via a numeric value the frequency that your tuner is dialed into Displ...

Page 8: ...face of your tuner should be on Place the stereo mono switch B on diagram to the Mono position your stereo light should now go off Now turn the stereo mono switch back to the Stereo position and your...

Page 9: ...il your center tune meter is set or your magic eye tube is closed 4 Your Precision remote gives you the ability to store and scan up to 20 preset stations To program a preset station first tune to the...

Page 10: ...10 IMAGE OF RC1 REMOTE...

Page 11: ...plifier is off Verify installation of interconnects Turn preamp to input where tuner is connected On preamp defeat tape monitor function Turn amplifier on Low signal strength Antenna not connected pro...

Page 12: ...used Types of Antennas Multi element Yagi This is a unidirectional antenna capable of pulling in very distant stations due to its high gain the higher the gain the better These types of antennas are...

Page 13: ...good folded di pole There are many styles of antennas but all of them are based on one of these types FM RECEPTION AIDS AND ACCESSORIES We have already alluded to the importance of a good quality ante...

Page 14: ...HD Mono 0 10 THD Stereo 0 18 Stereo separation 50 0 dB AM suppression 70 0 dB SCA rejection 80 0 dB IF rejection 80 0 dB 19 KHz and 38 KHz component rejection 75 0 dB Audio frequency response 1 dB 20...

Page 15: ...TE OUTLET 9 PROTECT THE POWER CORD FROM BEING WALKED ON OR PINCHED PARTICULARLY AT PLUGS CONVENIENCE RECEPTACLES AND THE POINT WHERE THEY EXIT FROM THE APPARATUS 10 ONLY USE ATTACHMENTS ACCESSORIES SP...

Page 16: ...propriate service depot The foregoing is in lieu of any other warranties expressed implied or statutory and the manufacturer neither assumes nor authorizes any person to assume for it any other obliga...

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