Magnum MD 107T Instruction Manual Download Page 12

 

- 12 - 

 

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RECEPTION TECHNIQUES 

 
Antenna Cabling: 
 
The lead-in cable from the antenna is often the weakest link in the FM system. 
Some time spent on selection and matching will yield dramatic results when it 
comes to noise reduction in weak signals. 
 
A good grade of 75 ohm coaxial cable will provide very sufficient signal passage, 
along with effective shielding against interference. Without effective shielding your 
coaxial cable can in fact become an antenna in itself. There are different grades 
of 75 ohm cable, there is RG59/U (Suitable for 50 feet and less) and RG 6. RG 
6 is the better of the two and should be used in runs of 50 feet or more. The RG 
6 has quad shielding and 50 % less losses than RG 59/U.  
 
The key to maximizing the efficiency of the system is insuring that all connections 
are clean and tight, silicon grease on outdoor connections will insure good 
performance over a long period of time. If you splice either cable, make sure that 
exactly the same type of cable is 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 very directional and should be used with a rotor to get the 
maximum benefit of the antenna. The directional feature helps eliminate multi-path 
problems by allowing only the signal from the direction that the antenna is facing 
to be picked up by the antenna and not the signals that come from a different 
direction.  

Magnum Dynalab offers two Yagi antennae, the MD 6 FM or MD 10 FM 

 
Vertical ½ Wave  - This design offers ease of installation and operation. This type 
of antenna is omni-directional, which means that it picks up stations coming from 
all directions. No rotor is required to pull in stations from behind or the side. This 
design also gathers more of the FM signal from the air, offering superior fidelity 
over that of a standard bi-directional antenna.  It also gives 2.5 dB gain to the 
signal strength over that of a standard dipole.  

Summary of Contents for MD 107T

Page 1: ...Magnum Dynalab MD 107T 107TR ANALOG FM TUNER INSTRUCTION MANUAL ...

Page 2: ...ONTROLS AND FUNCTIONALITY 6 DISPLAYS AND METERS 7 CHECKING OUT YOUR MD 107T 8 TUNER REMOTE OPTIONAL 9 RC6 REMOTE IMAGE 10 TROUBLESHOOTING 11 RECEPTION TECHNIQUES 12 Antenna Cabling 12 Types of Antennas 12 FM RECEPTION AIDS AND ACCESSORIES 13 PRODUCT SPECIFICATIONS 14 SAFETY SHEET 15 LIMITED WARRANTY 16 ...

Page 3: ...t 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 at three frequencies 92 MHz 101 5 MHz and 106MHz This process optimizes tuning performance across the entire FM band so that you attain the same levels of quality regardless of where you are tuned T...

Page 4: ...PPER 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 in order for our receiver to accept it from the carrier Also if the unit has incurred damage as a result of improper packaging it is not likely that a claim for the damage against the carrier will be succe...

Page 5: ...with a 300 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 to your tuner Place this into the F connector input on the rear of your tuner 5 If you have the D A C option connect the digital inter connect to either the D1 D2 OR D3 input 6 Unwrap the EIA...

Page 6: ... 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 Narrow bandwidth setting this setting produces optimal sound performance where adjacent channel interference is a factor F TUNING KNOB Rotating thi...

Page 7: ... better J FREQUENCY INPUT DISPLAY Displays the station via a numeric value the frequency that your tuner is dialed into Display ranges from 87 5 MHz through 108 5 MHz This readout is controlled by the tuning knob F on diagram CENTER TUNE MAGIC EYE Indicates the setting of the tuners front end in relation to the station you are tuning to To insure that the tuner is tuned to its optimum position the...

Page 8: ...reo light on the face of your tuner should be on Place the stereo mono switch D 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 Stereo indicator light should turn back on 7 You are ready now to search through FM frequencies in search of your favorite stations If you encounter difficult reception situations ple...

Page 9: ... push STORE Then select the preset memory position you want to store this station in by selecting two digits For numbers 1 9 you must select 01 09 and for 10 directly enter the number NOTE When setting a preset you must enter the numbers quickly and tap do not hold down the buttons as they are very sensitive Once presets have been entered briefly turn off the unit with the remote to save changes 5...

Page 10: ... 10 RC6 REMOTE ...

Page 11: ...r correct antenna type Change your antenna Rotate your antenna or mount your antenna higher or near a window if indoors Intermittent sound Mute switch is in the ON position Turn the mute switch to OFF position Tuner remote does not work Batteries dead Buttons being held too long Improper sequence Power switch should be in the off position on standard tuners and the remote must be activated with th...

Page 12: ...tdoor connections will insure good performance over a long period of time If you splice either cable make sure that exactly the same type of cable is 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 very directional and should be used with a rotor to...

Page 13: ... a number of di pole antenna designs they work well in areas of strong signal strength such as local stations Magnum Dynalab offers the SR 100 as a 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 antenna which has been designed and built with the recep...

Page 14: ...ion 80 0 dB 19 KHz and 38 KHz component rejection 75 0 dB Audio frequency response 1 dB 15 Hz 17 KHz Balanced audio output 600 ohms 2 2 V Line audio output RCA 1 0 V Line power Must be specified 110 220 230 240 VAC Dimensions inches H W D 4 x 19 x 13 5 Dimensions cm H W D 11 43 x 48 3 x 34 3 Weight lbs kgs 18 7 96 Power consumption Max 50w TUBE SPECIFICATIONS Filament current max 330 mA min 270 mA...

Page 15: ...ETE 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 SPECIFIED BY THE MANUFACTURER 11 UNPLUG THIS APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG PERIODS OF TIME 12 REFER ALL SERVICING TO QUALIFIED PERSONNEL SERVICING IS REQUIRED WHEN THE APPAR...

Page 16: ...unit to the appropriate 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 obligation or liability in the connection with the sale of this product This warranty is not transferable except by written authorization from the manufacturer In order to qualify under the te...

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