R100B User Manual - Landmark Audio Technologies
Contents
1. 917 12 92 89 2c ac 1021 46 ce 1073 60 Eo advice from the factory any unit can be field adjusted to further surpass FM 919 13 93 97 1 2D AD 102 3 47 C7 l 921 14 4 973 26 AE 1025 48 c8 1077 62 ED broacast sonic standards for ANY channel that you choose from 92 mHz 923 15 95 97 5 2F AF 102 7 49 C9 107 9 63 E3 925 16 96 977 30 Bo 1029 4A CA 1079 G46F EAEF and above NOTE that teh standard R100 repeater protects Public radio 927 17 97 979 31 B1 103 1 4B CB 88 1 70 7F FO FF i x 929 18 98 981 32 B2 1033 4c CC allocations below 92 mHZontact the factory if you require a unit capable 93 1 19 99 98 3 33 B3 103 5 4D CD Notice that the codes are Hexadecimal meaning they use combinations of numbers and the letters A F of 88 to 92 mhz operation You can adjust modulation using the volume controls in individual Windows player applications and over time experience with the sources you are broadasting will be your best guide to learning the best setting for master volume2. tricks they do you should avoid trying to sound TOO loud as this can cause over modula tion distortion and interference The easy way to tell if your modulation is too high is to watch out for splashy or over emphasized S sounds and sounds of distorted audio on volume peaks A great way to zero in on Landmark FM Codes F Frequency S Stereo M Mono Fe Se M Fe Se MF Se M Fe S e M 80 34 883 01 81 93 5 1B 9B 98 7 35 BS 1039 4F CF 885 02 82 93 7 1C 9C 98 9 36 B6 1041 50 DO 88 7 03 83 93 9 1D 9D 99 1 37 B7 1043 51 D1 88 9 04 84 941 1E 9E 99 3 38 B8 104 5 52 D2 89 1 05 85 94 3 1F 9F 99 5 39 BO 1047 53 D3 893 06 86 945 20 AO 997 3A BA 1049 54 D4 perfect modulation is to compare loudness with a prominent commercial 89 5 07 87 94 7 21 A1 99 9 3B BB 105 1 55 D5 897 08 88 949 22 A2 100 1 3C BC 1053 56 D6 broadcaster and then set your modulation transmitter volume to be 89 9 09 89 95 1 23 A3 100 3 3D BD 1055 57 D7 90 1 0A 8A 953 24 a4 1005 3E BE 1057 58 D8 quieter 90 3 OB 8B 95 5 25 A5 100 7 3F BF 1059 59 D9 207 0D ad 989 27 ar 1011 41 c1 1063 5 DB 909 0E 8E 961 28 a8 1013 42 C2 1065 5C DC While your transmitter performs well on all channels each unit is factory 91 1 OF 8F 96 3 29 AY 101 5 43 C3 i 913 10 90 5 2 aa 1017 44 Ca 1060 SE DE adjusted for peak modulation quality for the range of 95 to 105 Mhz On 915 1 91 96 7 2B AB 101 9 45 CS 107 1 5F
3. Message repeater specifics 1 Select the channel you will be using before applying power 2 Place antenna for best height and coverage Standard CATV coax can be used to extend the antenna placement from the transmitter box 3 To change programming press the CD tray button to open the drawer Load a standard audio CD and close the tray Playback will begin automatically 4 For best results avoid using a cd that has a short recording If your message is only a few minutes long record multiple copies on a single disks so that the total length is about 40 mins or more Longer lengths of cd insure best exercising of internal components for years of useful service User Guide to R100B Looped Repeater R1 00B CD Repeater Infocaster Installation and User information Landmark Audio Technology FCC ID FM350 R100 TEL 518 426 0171 Setting up your antenna for best results Situation A MAXIMUM coverage 1 Set up the antenna as HIGH as possible If you live in a two story house place the flat twin lead Dipole in a window box pinned vertically using push pins so that as musch as possible of the T shaped radiator is in front of glass 2 If using the simple whip antenna arrange the wire so it is as vertical as possible using tape or a push pin to hold it in as straight and vertical as you can See the picture below for how to pin the dipole in an inside window frame BE sure to keep the first 18 to 2 feet of the feedline
4. ase Place the unit ona flat surface with the CD tray pointing toward you Then side panels slide forward and then can be removed next simply lift off the top cover Note that there is a legend that indicates the FRONT of each slide lock panel Itis important that you match the orientation of the panels exactly when closign the cover after adjustment Now turn the unit 180 degrees so that you are now looking at it from the back as shown in the picture The two blue screw adjustments are the left and right volume and the two black switches are the channel selector Choose a channel and mode from the frequency table and set it while the unit is turned off i Te alam i i E l bi bi 3 i iiki iF Li NOTE that all units leave the factory set on HEX 37 which is the code for 99 1mHz Stereo The modulation volume adjustments are normally ideal at 11 o clock but may need to be turned clockwise for quiet recordings and turned down a bit if you recording has been highly processed by a recording studio A copy of the frequency look up table is on the next page and also inside the unit on a bold metallic sticker Please do not plug in the transmitter until you have preset the channel you intend to use First look up the channel code for the the channel you want to use using the transmitter frequency table below There are two different codes for every FM channel depending on whether or not you want stereo or mo
5. el gives you all the choice you need Where should set up my R100B Your antenna can be anywhere within about 100 to 200 feet of the receivers you want to reach depending on the sensitivity of the radio receiver A boombox needs to be closer a modern digital receiver can be much farther away and still get an excellent clean signal In situations where you want to cover a bigger area you can attach standard 75 ohm CATV coaxial cable and then place the actual antenna at the area you want to cover In general for best coverage the antenna should be at the center of the coverage area as high above ground and away from metal or concrete walls as is reasonably possible If you need greater coverage for professional applications involving public listening assistance governmental institutional information broadcast or temporary concert event use consider the FM 350 P W models These can produce enough power when used with our 75 ohm On Channel antennas to cover areas of from 1 to 15 Square Miles A special tip For best coverage straighten the antenna wire and align so that the wire is vertical Opening the case to change channel and adjust volume Remember that all settings are viewed from the REAR of the unit looking toward the front Channel selection and any needed volume adjustment is done by removing the top cover FIRST UNPLUG THE UNIT Do not handle the unit or remove the covers while it is plugged int to AC Open the c
6. nd that ONLY channels ending in 1 3 5 7 and 9 are standard assigned frequencies sure to found on ALL possible FM radio receivers If you are really lucky you can find a bigger gap than the one we suggest Conversely if you are in a major metropolitan area you may have to settle for a gap of just 3 stations You want to be as much as possible positioned in the CENTER of stations on either side of your chosen frequency Once you find a good channel you usually never have to change it It is important that your make sure you are not going to set your transmitter to a channel that is already in use since this can cause interference to other listeners within range In spite of the Part 15 license free status of the R100B you are still bound by numerous aspects of Federal Communications law The most important is to not knowingly cause interference and to cease transmission promptly if notified should you be inadvertantly causing a problem with your transmission And it s also the courteous way to share FM spectrum You should also be aware that it is a Federal offense to adopt a call sign that was not issued to you by the FCC Are some channels better than others YES most definitely And the rule is this Rule 1 HIGHER frequencies are almost ALWAYS better Rule 2 Using MONO transmission increases range and improves the receiver signal to noise ratio as a bonus The FM R100B s outstanding ability to tune every standard FM chann
7. no operation Remember mono carries farther The numbers in the table each corrrespond to FM US channels To set your channel find the frequency and decide if you want stereo or mono operation Using the supplied 2 4 MM ora 1 blade screwdriver rotate the code switches to the two digit HEX code for that frequency Every transmitter leaves the factory set to 99 1 Mhz which is code number 37 in the chart Here is a close up of the channel switches showing setting 37 as an example Unused or invalid code settings set the frequencies indicated at the end of the last column Setting Modulation There are a pair of volume controls for adjusting modulation For most channel settings and audio sources the 12 o clock or 50 setting is the right place to start This is checked at the factory However there is a slight variation in volume sensitivity that is based on the frequency you transmit on When using channels at the low end of the band appx 88 1 to 94 Mhz you may want to increase the volume to as high as perhaps the 2 o clock position for consistent loudness and quality sound And likewise on the higher channels above 103 Mhz or so you may want to slightly reduce the volume settings to say 10 or 11 o clock Because of the superior clarity and frequency response of the transmitter you do not need to com pete with commercial broadcasters for sheer volume and since you do not have the audio compression and other loudness enhancing
8. section at a clean right angle to the main direction of the T radiator as shown 3 Remember that the body of a building blocks FM signals whcih are line of sight so an unobstructed view from the antenna is key to good coverage Applying RF shield blocks You will find several clamshell style RF blocks supplied to prevent RF from travelling on the skin of the audio input lines and causing distortion or buzzing sounds The best way to apply them is as shown with a full loop going though the block before closing Two are supplied in the event you are using two unbonded cables Remember that you can open the tray to stop playback and then feed LIVE sound via the audio jack on the rear panel of the unit Before going on the air The most important step is choosing your channel Operating without a license still obligates you to refrain from causing interference And to do that you must transmit on a frequency that is not in use locally Unless you live in a very remote part of the continental US you will want to conduct a personal frequency search Using a good quality DIGITALLY tuned FM receiver start listening near the TOP of the FM band 107 1 Mhz is a good starting point for our USA models You want to check each frequency while tuning slowly DOWN the band looking for ideally 5 or more unused frequencies or very weak channels between two strong strong stations If your FM tuner works in 1 mhz step please understa
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