O6E710150BVHF Base Station/Repeater

OPERATORS MANUAL KYODO KG510 BASE/REPEATER KYODO KG510 OPERATORS MANUAL 134158Page #2 of 26 Pages26 January, 2001 CONTENTS SECTIONDESCRIPTIONPAGE 1INTRODUCTION 4 2PRODUCT DESCRIPTION 4 2.1 Features 4 2.2 Product Description 4 2.3 Standard Inclusions 5 CONTROLS, INDICATORS, & CONNECTORS 5 3 3.1 Front Panel Controls5-7 3.2 Rear Panel Connectors7 OPERATION 4.1 Installation and Programming 8 4.2 Basic Operation8 4.2.1 Switch On 4.2.2 Adjust the Volume Setting 4.2.3 Adjust the Squelch Setting 4.2.4 Select the Channel 4.2.5 Receiving 4.2.6 Transmitting 8 8 8 8 8 8 4 4.3 Front Panel Operation 4.3.1 Keypad Operation 4.3.2 Keypad Operation using the SHIFT Key 4.3.3 Changing Channels 9 9 10 11 4.4 Signalling 11 4.4.1 5-Tone Signalling 11 4.4.1.1 Available Tones11 4.4.1.2 Entering 5-Tone Encoding Sequences 11 4.4.1.3 Recalling the Last Encode Sequence12 4.4 2 DTMF Signalling 12 4.4.2.1 Available Tones12 4.4.2.2 DTMF Tone Entry 12 KYODO KG510 OPERATORS MANUAL 134158Page #3 of 26 Pages26 January, 2001 CONTENTS SECTIONDESCRIPTIONPAGE 4.4.2.3 Redialling with DTMF 13 4.4.2.4 Restoring the Last DTMF Numbers to the LCD Display 13 4.4 3 Single Tone Encoding13 4.4.4 Kill Signalling 14 4.4.4.1 Kill Signalling Operation14 4.5 Channel Scanning 15 4.5.1 All Channel Scan Operation 15 4.5 2 Program Channel Scan Operation16 4.5.3 Exiting Scan Modes 16 4.5.4 Priority Scanning16 4.5.5 Removing Channels from Scan List 17 4.5.6 Restoring Channels to the Scan List17 4.6 Locking the Key Pad 17 4.7 Changing Tone Signalling Systems 18 4.8 Displaying Channel Information 18 4.9 Displaying Received Tone Frequencies 19 4.10 Bar Graph Displays 20 4.11 LCD Display Back Light 20 4.12 Transmit Power Change 20 4.13 Calling Party ID Display 21 4.14 Displaying any Radio's ID Number 21 4.15 Emergency Caller Display 22 4.16 Automatic Transmit in Repeater Mode 22 4.17 TX Test Mode 23 4.18 Key Pad Test Mode 23 4.19 Frequency Band Test Mode 24 4.20 Starting Message24 4.21 Serial Number Display25 4.22 EEPROM Data Check Mode25 4.23 Hardware Error Detection26 4.24 RS232C Communications Error Messages26 KYODO KG510 OPERATORS MANUAL 134158Page #4 of 26 Pages26 January, 2001 1.0INTRODUCTION Thank you for purchasing a KYODO KG510 Base or Repeater. We trust that it will operate reliably and give you years of service. If not, or if you wish to suggest ways of improving the KG510's operation, or features, we would welcome your comments. 2.0 FEATURES & PRODUCT DESCRIPTION 2.1Features ! Simplex or two frequency Duplex operation ! EEPROM programmable with a PC computer ! Single Channel and 99 Channel Versions available ! Full Dot Matrix Liquid Crystal Display ! All FM Frequency Bands from 30 to 520 MHz ! Front Facing Speaker ! Transmit Time Limiter to prevent channel jamming ! TX and RX Encryption ! Two Channel Scanning Modes ! 5 Tone Encoder & Decoder plus DTMF Encoder & Decoder ! 22, 26, or 35 MHz switching bandwidth (model dependant) ! Up to 99 channels with Channel Labels ! Two-Stage Front End allows mixed Simplex and Duplex operation ! Channel selectable Wide or Narrow channel spacing ! CTCSS/DCS on a per channel basis ! 5 X 4 Keypad for Channel Change etc ! 2RU Equipment Cabinet ! Step-Up VCO Voltage for Superior Selectivity ! Low Stand-by Current is ideal for Solar Installations ! Watch Dog Timer 2.2Product Description The Kyodo KG510 transceivers represent a quantum advance on the previous rugged & time proven KG110 transceiver. They comprise of separate modules all housed within one 2RU equipment cabinet. The receiver, the transmitter, and the PA Unit are each enclosed within their own diecast housing, that are then directly mounted on the large upper heat-sink. A μProcessor controlled interface module controls the channel selection, LCD Display, timers, interfaces, and signalling features. Models are available for all FM commercial and military frequency bands from 30 MHz to 520 MHz, with channel selectable 12.5, 20, 25, or 30KHz channel spacing arrangements. The RF Power Output is 1 - 50 Watts on a continuous duty basis. The CTCSS module supports all EIA tones. All tones and different encode and decode tones can be set on a per channel basis during radio programming. The KG510 includes 5 tone Selective Calling encoder/decoder with non-predictive decoder, as well as a DTMF encoder, and voice encryption. It supports normal all channel scanning and programmed channel scanning for base use. The KG510 is fitted with a large full dot matrix LCD that is used to display the Channel Numbers & Names, frequency & tone programmed information, and signalling information. All user interface keys and knobs are conveniently located on the front of the radio. All user entered functions are easily activated in a logical manner via the keypad. The KG510 is supplied with an "N" Type connector for the transmitter, and a TNC Connector for the Receiver to allow easy connection to the diplexer or feeder cables. The rear panel includes a 9 way D sub connector for fitment of an external shared tone panel. Also included is a 25 way D sub connector that enables external interface to other radios or control equipment. KYODO KG510 OPERATORS MANUAL 134158Page #5 of 26 Pages26 January, 2001 2.3 Standard Inclusions The KG510 transceiver is supplied complete with the following items: KG510 transceiver DC Cable Operators Manual KD561 Hand Microphone 3.0 CONTROLS, INDICATORS, & CONNECTORS 3.1 Front Panel Controls 1. 1.1. 1. Headphone Socket This socket is provided to allow users to listen to the KG510 using headphones. Plugging a headphone into this socket will disconnect the built-In speaker. It does NOT include a microphone input, or TX PTT facility. 2. 2.2. 2. High TX Power This is a service point and is not used by the radio operators 3. 3.3. 3. Low TX Power This is a service point and is not used by the radio operators 4. 4.4. 4. Loud Speaker* The receiver audio signals are heard from this speaker (provided that the volume setting is loud enough and provided that the sp…

Text truncated - open the document above for the full version.

Front View Top View Botto m View Left Side View Right Side View Rear View

Interior View Exciter PA Receiver

CIRCUIT DESCTIPTION TITAN LOW BAND BASE/REPEATER RECEIVER PART 1) RF section An incoming signal is fed to pre-selector (BPF-1), and amplified by Q101, Then fed to post-selector (BPF-2). The balanced mixer, consisting of T101, T102, D107 and D108, produces 48.5mhZ by injection from the 1 st local signal provided by Rx VCO (the 1 st local of the 30MHz bands KG510 radios are 21.6MHz). 2) Noise Blanking Section A noise blanking circuit consists of Q102 (1 st noise amplifier), Q121 (buffer amplifier), Q122 (2 nd noise amplifier), Q123 (3 rd noise amplifier), Q125 (1 st pulse amplifier), Q104 (2 nd pulse amplifier) and blanker switch formed by D103 though D106. An incoming signal is divided by the 1 st RF amplifier (Q101) to feed the 2 nd BPF and to feed 1 st noise amplifier. A noise is amplified by Q102, Q121, Q122, Q123, Q125 and Q104. Then amplified pulse triggers the blanker switch to eliminate the noise within the RF signal. 3) IF section The output signal from the balanced mixer is fed to the crystal filters (XF101), then amplified by Q103. Again, this signal is fed to the 4-pole crystal filters and amplified by Q113. After amplified by Q113, signal is fed to 2 nd processor IC (IC106). The 2 nd local crystal oscillator signal is fed to IC106 to produce the 2 nd local signal (455KHz). IV106 amplifies the 2 nd local signal and becomes an audio signal by detector circuit inclusive within the IC106. Then, the audio signal is fed to the low-pass filter inclusive in IC107, and fed to audio processor IC (IC3). 4) VCO section The oscillator circuit formed by L303, D303, D305 and Q301 produces the 1 st local signal (Rx frequency minus 48.5MHz). The 1 st local signal is amplified by buffer amplifier Q302, and again amplified by pre-amplifier IC301m and post amplifier Q303. The amplified signal is fed to the balanced mixer. 5) PLL section PLL IC inclusive with pre-scaller IC101 compares the phase between the VCO frequency and reference oscillator frequency (12.00MHz) by method of dividing the frequency, and produces VCO control signal. Then, this control signal is fed to the charge pump, consisting of Q108, Q109 and Q110, and fed to the LPF. The supply voltage of charge pump is multiplied by IC102 (approx. 15V) to achieve greater C/N ratio. TRANASMITTER PART 1) VCO section The oscillator circuit formed by L303, D305 and D306 generates transmitter Frequencies. Then this signal is fed to the 3-stage of amplifiers, buffer amplifier Q302, pre-amplifier IC301 and post amplifier Q303 and lead to the final amplifier. 2) PLL section Basically, the circuit description is the same as Rx. PLL IC inclusive with pre-scaller IC205 compares the phase between the VCO signal and reference oscillator frequency (12.00MHz) by method of dividing the frequency, and produces VCO control signal. Then this VCO control signal is fed to the charge pump, consisting of Q206, Q207 and Q208, and fed to the LPF. The supply voltage of charge pump is amplified by IC206 (approx. 15V) to achieve greater C/N ratio. 3) Modulator section The modulation signal is fed to both VCO and the reference oscillator (TCVXO), this permits a very flat modulation characteristics against low frequency (DC). This is the advantage when KG510 is used for POCSAG transmitter. 4) Tx younger section The VCO signal is amplified by Q215 and Q216 to achieve 250mW. But VHF bands (136-174MHz) has only stage of amplifier Q215 to achieve 100mW. 5) PA section The signal from younger stage is fed to Q501 (semi-driver), Q506 (driver) and Q454 (final amplifier) to achieve 50W output power. Then, signal is fed to the LPF to eliminate the harmonics spurious frequencies. An APC circuit formed by IC502, IC503, Q504 and Q505 stabilizes the output power at the set level. An IC501 protects PM501 and Q501 from the reverse power caused by the un-matched aerials. LOGIC PART 1) Microcomputer (CPU) section A CPU, IC-1, uPD78F005 is the 8-bit processor contained 60K flash memory and 2K RAM inside. This CPU controls all functions of KG510. A flash memory permits ON-BOARD-UP-GRADE when the new software is released. 2) EE ROM section An IC7 is the 64kbit EEROM. This IC contains all channel parameters 3) Audio processor section An IC2 is for Tx and an IC3 is for Rx audio processor. These IC’s control all audio processing and encode/decode CTCSS tones by commanded by CPU. These IC’s are also inclusive with 2400bps MODEM to enable to form MPT1327 trunking protocols by using an external MPT control software. FRONT CONTROL PANEL PART 1) LCD display section LCD display is constructed by 128 x 32 dot matrix. This allows to indicate not only characters but also graphics and symbols as you design. 2) LED display section The 4 LED’s are indicating each mode of operation KG510 now works. 3) Audio amplifier section An IC404 has 2w audio power to drive 8 ohm speaker mounted on the panel 4) Microphone pre-amplifier section An IC401 is the voice pre-amplifier having –34dBm output to feed Tx modulater.

ALIGNMENT PROCEDURES KYODO KG510 BASE/REPEATER RECEIVER PART 1) BPF-1 and BPF-2 alignment Connect the signal generator to the Rx antenna connector of KG510. Align the BPF-1 and BPF-2 to obtain the maximum sensitivity. For better alignment, if you have spectrum analyzer and tracking generator, connect the tracking gene- rator to the Rx antenna connector and pick up the output signal from J101 to connect spectrum analyzer. Align the BPF-1 and BPF-2 to have cover the desired bandwidth of receiving frequencies. 2) FVR101 alignment This is to adjust the squelch tihgt level. 3) VCO alignment Set the VCO voltage at 10.5V by L303 at the highest receiving frequency. TRANSMITTER PART 1) FVR201 alignment This potentiometer determines the modulation level. Carefully aling this potentiometer to obtain flat deviation from the lowest to the highest frequency installed n the transmitter. 2) FVR202 alignment This potentiometer determines the low frequency (below 300Hz) deviation. When POCSAG, CTCSS or DCS are used, necessary to align to have enough deviation at low frequency. 3) FVR203 alignment This potentiometer sets the maximum deviation, normally set at 5KHz. 2KHz or 2.5KHz deviation for narrow spacing can be set by programming software. 4) FVR204 alignment This is to adjust the transmitter output power. 5) VCO alignment Set the VCO voltage at 10.5V at the highest channel frequency. LOGIC PART 1) FVR1 alignment This potentiometer is to obtain 600 ohm 0dBm output of the RF signal. 2) FVR2 alignment This is to set the deviation level when KG510 is used for a repeater. 3) FVR3 alignment This is to set the Tx output power level indicating on the LCD. 1) FVC1 alignment This is to shift the CPU clock frequency when necessary. A beat interference sometimes happens at certain frequency. In such case, shifting the CPU clock frequency may eliminate the interference. FRONT CONTROL PANEL PART 1) VR401 alignment This is a volume controller. 2) VR402 alignment This is a squelch level controller. 3) FVR401 alignment This is to set the HI-POWER-LEVEL of the Tx output power. 4) FVR402 alignment This is to set the LO-POWER=LEVEL of the Tx output power. 5) FVR403 alignment This is to set the contrast of the LCD back light.

C534 C535 C536 C537 C538 C558 C559 C560 75P 75P 4P ¦ ¦ ¦ 82P 82P R505 R550 R545 R547 22ƒ¶ 3.3ƒ¶ 27ƒ¶ 1.5K 2SC2412K Q504 FVR504 100K A ¦ R527 270ƒ¶ 1W R532 100K R533 1 2 3 M5237ML IC503 R530 100K 2.2K R538 1K R528 C C508 150P 820PC510 C511 C513 820P 270P 180PC514 C520 75P 100PC521 C522 C532 C533 75P 75P 75P 1SS355 D508 R529 47K C551 ¦ 2K FVR503 4 1 2 3 BAM4558F IC501:A C550 0.1ƒÊ D507 1SS355 R526 100K 100K R525 3 1 4 2 5 TA75S01F IC502 3.9K R523 1.2K R520 13 IC504 AN78L05M 470ƒ¶ R513 10K R519 D506 UDZ2.4B R517 100K 6.8K R518 R514 5.6K 5 6 7 8 BAM4558F IC501:B 2K FVR502 C546 0.22ƒÊ C547 4.7n R515 47K C556 0.1ƒÊ C548 4.7n TH501 68ƒ¶ 4.7n C505 1SS355 D501 D502 1SS355 10ƒ¶1/2W R509 R508 2.2K C555 2.2ƒÊ/16V C502 4.7n 1.8K R501 33ƒÊ/25V C554 1K R537 4.7K R535 0.1ƒÊ C553 270ƒ¶ R531 12K R534 2SB1018A Q505 L503 HM501 C506 4.7n CN501 PW IN 470ƒ¶1/8W R507 R502 150ƒ¶ 150ƒ¶ R504 ¦ C504 C503 2.2n R505 33ƒ¶ 33ƒ¶ R503 2.2n C501 2SC1947 Q501 KQ1008 L5024.7ƒÊ 0ƒ¶ L501 100ƒ¶ R506 C561 ¦ UC34 Q506 2SC1729 HM501 BL501 R551 47ƒ¶ 1/8W 2n UC55 C509 2.2n C507 C508 180P R550 4.7ƒ¶1/8W UC34 220P C512 UC34 330P C513 C515 470P UC34 R553 Lead 33ƒ¶ FL06BT04 L505 R556 1ƒ¶1/2W Q508 MRF454 C510 820P UC55 C511 UC55 1n 33ƒÊ/25V C552 5.6K R524 5.6K R522 C549 4.7n R555 0ƒ¶1/8W BL512 FBA04.900 FC503 IHB340 L504 Lead 47ƒ¶ R552 L506R554 Lead 100ƒ¶ FC501 IHB340 GRM40 C543 470P C517 2.2n C518 0.1ƒÊ UC34 C544 470P DTB143EK Q503 270ƒ¶ R539 2SK2731 Q507 1K R521 D509 1SS355 10K R512 Q502 DTC124EKA 470K R516 180K R536 TP501 RCT R511 10K FBA04.900 BL505 RB501V D504 FBA04.900 BL506 C542 GRM40 0.01ƒÊ C541 4.7ƒÊ BL514 FBA04.900 C526 4.7n 4.7n C525 RB521S D503 4.7K R547 FC502 IHB340 HM501 BL507 TP502 RCT C540 4.7n 4.7n C527 R510 10K UC34 120P C520 ¦ UC34 C519 100P FVC505 C514 220P UC34 C516 2n UC55 UC34 120P C521 L508L507 FVR501 200ƒ¶ C529 4.7n UC23 100P C522 ¦ C539 UC34 ¦ C523 C524 5P 10KR548 BL509 FBA04.900 HM501 BL508 D505 RB501V R546 ¦ C528 4.7n C530 4.7n C531 2n UC34 UC23 C558 ¦ ¦ C537 UP050 33ƒ¶ R545 C559 100P UC23 C532 UC23 100P C533 UC23 100P C534 UC23 100P 4P C536 UP050 L510 L509 C535 UC23 100P C538 UC23 ¦ C560 UC23 100P CN502 L511 BL516 FBA04.900 FBA04.900 BL517 DC IN © ̈ DC510 51PAP8X HM501 BL510 SML-210VT D510 PA UNIT CIRCUIT DIAGRAM }”Ô ŒŸ }³”F »}ÝŒv ‹¦“ ̄’Ê M‹@ »‘¢Š”•®‰ï•Ð –¼ Ì KG510-03B 35MHz---45MHz 3 2 1 CN503 TO CP501 ERR PW CONT POW R541 4.7K 2.7K R543 R542 4.7K R540 2.7K C545 4.7n 2A-SA0028 51PA30Z

75PC245 CA 470ƒ¶ R233 4 3 5 2 1 UMC2N Q209 BU4S66 IC207 C226 0.1ƒÊ 2SK3018 Q206 1K R232 18K R228 2SJ166 Q207 47n C227 2SK3018 Q208 15n C218 D207:B D207:A DA204U C228 1.5ƒÊ GRM42 47ƒ¶ R230 R229 47ƒ¶ R227 27K R224 4.7K R225 1K C256 22n C222 10ƒÊ 39K R231 R213 12K 1ƒÊC209 GRM42 253 1 4 UMC2N Q203 8.2KR214 0.22ƒÊ C208 10K R217 10K R216 10K R215 MB1511 IC205 D202 1SS355 15n C220 R204 68K C204 100P 100K R210 GRM42 1ƒÊ C205 5 6 7 8 TS272CD IC203:B 42 3 1 TS272CD IC203:A ¦ C206 R212 15K 100K FVR203 C207 47P TA75S01F IC204 FVR201 10K R211 180K PW.CONT SIMP ERR REF VCO TCXO CK DATA LE TX.OUT TX2 R242 ¦ 16151413121110456789321 CN202 FLC202 R236 47K 2.7K R234 Q217 2SK880 ¦ R286 ¦ R285 ¦ R219 10K ¦ R284 10ƒÊ C224 16CS201 C219 2.2ƒÊ/16V C229 ¦ C236 470P R221 100K IC206 NJU7662M D205 1SS355 100ƒ¶ R222 2SD2351 Q205 4.7K R223 D206:A DA204U D206:B 10n C255 10ƒÊ C221 10ƒÊ C223 10ƒÊ C225 V C O 1 2 CS202 R264 10ƒ¶ R265 270ƒ¶ 150P C240 220P C215 C211 47n BLM21 BL203 47n C214 10P C217 10ƒÊC213 BLM21 BL204 BL205 BLM21 BL206 HM501 C212 10ƒÊ 13 IC201 AN78L05M 200K FVR202 4.7K R206 4.7ƒÊ C202 R207 10K C210 1n 100K R209 DC OUT GND V.C. 12.00MHz OSC201 560K R205 2SB1184 Q212 270ƒ¶ R239 12 IC202 TA78M05F D201 UDZ2.4B C203 1ƒÊ 10ƒÊ C201 BL202 HM501 BL201 HM501 C257 1ƒÊ R244 47K Q214 IMX1 D210 1SS355 R257 47K R259 150K 5K FVR204 Q211 FMG2A R240 470ƒ¶ 1/8W R247 100K R246 15K 10K R241 10K R243 0.15ƒÊ C230 C244 1n C241 2.2n C243 2.2n L201:B L201:A #1092 10ƒ¶ 1/8W R271 150ƒ¶ R266 2SC2954 Q215 1SS356 D212 4.7K R268 R267 4.7ƒ¶ C242 ¦ R269 4.7ƒ¶ R270 470ƒ¶ D211 RB501V 39K R263 2.2ƒ¶ R274 C239 33ƒÊ C250 ¦ R272 0ƒ¶ 1/8W 82P C245 1n C248 L203 0.1ƒÊH C251 5P 15P C252 C249 5P C237 2.2n R260 8.2K R278 1.8K 100K R256 R280 1.8K 100mW CN201 470ƒ¶ 1/8W R279 2.2n C253 C254 2.2n R250 180K C232 10n ¦ R258 R249 47K 3 2 1 8 NJM2904 IC209:A D214 SML210-VT 47KR254 R255 47K 100K R253 R251 1.5K R248 0ƒ¶ 10n C235 47n C234 470ƒ¶ R252 6 5 4 7 NJM2904 IC209:B C233 2.2n R238 ¦ R277 10K R235 ¦ TX1 +12V GND +12V R237 1.5K BL207 BLM21 10K R261 R202 10K R201 10K C231 1n 3 1 2 IC208 M5237ML FMG2A Q210 Q202 FMG9A 10K R203 Q201 DTC124EKA 1n C238 R262 10K ÝŒv » } ³”F ŒŸ } }”Ô –¼ Ì ‹¦“ ̄’Ê M‹@ »‘¢Š”•®‰ï•Ð TX UNIT CIRCUIT DIAGRAM KG510-03B 2A-SA0033 51TX30Y

1SS239 1SS231 ¦ ¦ 1SS229 150ƒ¶ 2.2ƒÊ L305 L304 D306 D305 D303 D302 D301 180KR303 2PC306 33P 33P 82P 5P C310 C309 C307 C308 ¦C304 16P L306 150n C R326 ¦ ¦ R304 16 CP301 ANo RCT TP301 C303 C304 0.5P GRM39 4.7ƒÊH L301 HVU358 D305 R305 0ƒ¶ 82n C302 1SV231 D303 1SV229 D302 R301 47K R324 47K 47K R302 D301 1SV229 R303 180K C307 5P GRM39 2P C306 C305 0ƒ¶ 4A-S614 L303 120P C308 HVU355 D306 C303 10P 470ƒ¶ R311 4.7K R309 R312 100ƒ¶ 2SK508 Q301 C309 39P C312 2.2n L304 3.3ƒÊ KQ1008 180ƒ¶ R306 R308 4.7K R310 470ƒ¶ TH301 ¦ Q302 2SC4250 R325 100K C310 68P 820ƒ¶ L305 7P C311 1K R307 D309 UDZ2.0 ~2 L307 15ƒ¶ D310 R323 100ƒ¶ D308 1SS356 IC301 ƒÊPC1688 C320 1n BLM21 BL302 R316 3.3K R317 1K C314 47P C321 47P C315 15P 2.2n C329 2.2n C313 10ƒÊ C319 10ƒÊ C318 Q304 DTA124EKA Q305 2SD2351 R313 10K 2.2K R314 D307 1SS355 Q306 DTA124EKA 4.7K R315 C324 10ƒÊ C325 2.2n R319 4.7ƒ¶ C327 ¦ L308:B #1092 L308:A 470P C326 Q303 2SC3583 56ƒ¶ R318 2.2n C322 2.2n C323 R320 330ƒ¶ 2 1 CP302 ÝŒv » } ³”F ŒŸ } ‹¦“ ̄’Ê M‹@ »‘¢Š”•®‰ï• –¼ Ì }”Ô TX VCO UNIT CIRCUIT DIAGRAM 15ƒ¶ R321 C316 10P HM501 BL301 3A-SA0035 KG510-03B C317 2.2n 51TC30Y

ENGINEERING STATEMENT IN REGARD TO MEASUREMENTS OF TRANSMITTER SPURIOUS EMISSION SECURICOR WIRELESS FCC ID: O6E710150B MODEL 71-0150B 1.0 Introduction Hyak Laboratories, Inc. has been authorized by Securicor Wireless to perform measurements on the 71-0150B transmitter to determine spurious emissions compliance with FCC Rules, Paragraph 2.993(a)(b,1). The Model 71-0150B, a VHF base station/repeater, is electrically similar to the Model 71-0150C, FCC ID: O6E710150C, but covers the 35 to 42 MHz range. 2.0 RF_Power_Output_(Paragraph_2.985) Conducted RF power output was measured with a Bird Model 4421 RF power meter and a Bird 8325 50 ohm power attenuator as a dummy load. TABLE 1 RF Power Output vs Supply Voltage Supply, Volts Power, Watts L H 13.8 25 60 3.0 Occupied_Bandwidth_(Paragraphs_2.989(c)_and_90.209(c)) Figures 1a and 1b show plots of the sideband envelope of the transmitter operating at 25 or 60 watts respectively taken with a HP 7550 Plotter from the display unit of a Tektronix 494P spectrum analyzer. 3.0 Occupied Bandwidth (Paragraphs 2.989(c), 90.209(c)), and 90.210 (Continued) Modulation corresponded to conditions of Paragraph 2.989(c)(1) and consisted of a 2500 Hz tone at an input level 16 dB greater than that necessary to produce 50% modulation at 2957 Hz, the frequency of maximum response. The plots are within the limits imposed by Paragraph 90.209(c) for frequency modulation. The horizontal scale (frequency) is 10 kHz per division and the vertical scale (amplitude) is a logarithmic presentation equal to 10 dB per division. 2 FIGURE 1a OCCUPIED BANDWIDTH REQUIRED ATTENUATION IN dB BELOW MEAN POWER OUTPUT Required On any frequency more than 50%, up to and including 100% of the authorized bandwidth, 20 kHz (10 - 20 kHz) 25 On any frequency more than 100% up to and including 250% of the authorized bandwidth (20 - 50 kHz) 35 On any frequency removed from the assigned frequency by more than 250% of the authorized bandwidth (over 50 kHz) 43+10 LogP = 57 (P = 25W) Occupied Bandwidth (25W) FCC ID: O6E710150B FIGURE 1a 3 FIGURE 1b OCCUPIED BANDWIDTH REQUIRED ATTENUATION IN dB BELOW MEAN POWER OUTPUT Required On any frequency more than 50%, up to and including 100% of the authorized bandwidth, 20 kHz (10 - 20 kHz) 25 On any frequency more than 100% up to and including 250% of the authorized bandwidth (20 - 50 kHz) 35 On any frequency removed from the assigned frequency by more than 250% of the authorized bandwidth (over 50 kHz) 43+10 LogP = 61 (P = 60W) Occupied Bandwidth (60W) FCC ID: O6E710150B FIGURE 1b 4 4.0 Spurious_Emissions_at_the_Antenna_Terminals Paragraph 2.991 of the Rules) The 71-0150B transmitter was tested for spurious emissions at the antenna terminals while the equipment was modulated with a 2500 Hz signal, 16 dB above minimum input signal for 50% (2.5 kHz deviation) modulation at 2957 Hz, the frequency of highest sensitivity. Measurements were made with a Tektronix 494P spectrum analyzer coupled to the transmitter output terminal through a Bird 8325 50 ohm power attenuator. During the tests, the transmitter was terminated in the Narda attenuator; carrier was notched. Power was monitored on a Bird 4421 RF power meter; dc supply was 13.8 throughout the tests. Spurious emissions were measured throughout the RF spectrum from 6 (Lowest frequency generated in the transmitter is 12.8 MHz) to 390 MHz. Any emissions that were between the required attenuation and the noise floor of the spectrum analyzer were recorded. Data are shown in Table 2, following. 5 TABLE 2 TRANSMITTER CONDUCTED SPURIOUS 38.821 MHz, 13.8 Vdc dB Below Frequency, MHz Carrier_Reference L H 25W 60W 77.642 96 93 116.463 96 93 155.284 >100 >100 194.105 >100 >100 232.926 >100 >100 271.747 >100 >100 310.568 >100 >100 349.389 >100 >100 388.210 >100 >100 Required: 43+10 Log(P) 57 61 All other spurious were 20 dB or more below FCC limit from 12.8 MHz to the 10th harmonic. Carrier attenuated with notch filter. 6 5.0 Description_of_Measurement_Facilities A description of the Hyak Laboratories' radiation test facility is a matter of record with the FCC. The facility is currently listed as an acceptable site. 6.0 Field_Strength_Measurements_of_Spurious_Radiation (Paragraph 2.993(a)(b,2) of the Rules) Field intensity measurements of radiated spurious emissions were made with a Tektronix 494P spectrum analyzer using Singer DM-105A or Emco 8221 calibrated test antennae for the measurements to l GHz. The transmitter and attached antenna were located in an open field 3 meters from the test antenna. Supply voltage was a power supply with a terminal voltage under load of 13.8 Vdc. Conducted output power was 60 watts at the 38.821 MHz operating frequency. The transmitter and test antennae were arranged to maximize pickup. Both vertical and horizontal test antenna polarization were employed. Reference level for the spurious radiation was taken as an ideal dipole excited by 60 watts, based on antenna substitution. Emissions less than 20 dB below the 60 watts reference were determined by substituting signal source and antenna. Measurements were made from the lowest frequency generated within the unit, 12.8 MHz, to 10 times operating frequency. Data are shown in Table 3. TABLE 3 TRANSMITTER CABINET RADIATED SPURIOUS 38.821 MHz, 13.8 Vdc, 60 watts dB Below Frequency MHz Carrier Reference 1 77.642 >81 116.463 >81 155.284 >81 194.105 >81 232.926 >81 271.747 >81 310.568 >81 349.389 >81 388.210 >81 427.031 >81 Required: 43+10 Log(60) 61 All other spurious from 12.8 MHz to the tenth harmonic were 20 dB or more below FCC limit. 7 7.0 Statement Technical test data herein are from tests performed by me or under my supervision. My qualifications are a matter of record with the Federal Communications Commission. I personally attest to the accuracy of the test data submitted as a part of this engineering statement. _____________________________ Rowland S. Johnson Dated: December 12, 2000 8

A. The dc voltage and dc currents at final amplifier: Collector voltage: 13.5 Vdc Collector current: 8.9 A B. MODULATION CHARACTERISTICS 1. A curve showing frequency response of the transmitter is shown in Figure 1. Reference level was audio signal output from a Boonton 8220 modulation meter with one kHz deviation. Audio output was measured with a Audio Precision System One TRMS voltmeter and tracking generator. 2. Modulation limiting curves are shown in Figure 2 using a Boonton 8220 modulation meter. Signal level was established with a Audio Precision System One TRMS voltmeter. The curves show compliance with paragraphs 2.987(b), and 90.211(c). 3. Figure 3 is a graph of the post-limiter low pass filter which meets the requirements of paragraph 90.211(d)(1) in providing a roll-off of 60Logf/3 dB where f is audio frequency in kHz. Measurements were made following EIA RS-152B with an Audio Precision System One selective voltmeter on the Boonton 8220 modulation meter audio output. 4. Occupied_Bandwidth (Paragraphs 2.989(c), 90.209(b)(4) and 90.210(d) of the Rules) Figures 4a and 4b are plots of the sideband envelope of the transmitter taken with a TEK 494P spectrum analyzer. Modulation corresponded to conditions of 2.989(c)(1) and consisted of 2500 Hz tone at an input level 16 dB greater than that necessary to produce 50% modulation at 2272 Hz, the frequency of maximum re- sponse. Measured modulation under these conditions was 4.3 kHz. All plots have unmodulated carrier as 0 dBm reference. FIGURE 1 MODULATION FREQUENCY RESPONSE MODULATION FREQUENCY RESPONSE FCC ID: O6E710150B FIGURE 1 FIGURE 2 AUDIO LIMITER CHARACTERISTICS AUDIO LIMITER CHARACTERISTICS FCC ID: O6E710150B FIGURE 2 FIGURE 3 AUDIO LOW PASS FILTER RESPONSE AUDIO LOW PASS FILTER RESPONSE FCC ID: O6E710150B FIGURE 3 FIGURE 4a OCCUPIED BANDWIDTH ATTENUATION IN dB BELOW MEAN OUTPUT POWER Required On any frequency more than 50% up to and including 100% of the 25 authorized bandwidth, 20 kHz (10-20 kHz) On any frequency more than 100%, up to and including 250% of the 35 authorized bandwidth (20-50 kHz) On any frequency removed from the assigned frequency by more 43+10LogP = 61 than 250% of the authorized (P = 60 W) bandwidth (over 50 kHz) OCCUPIED BANDWIDTH FCC ID: O6E710150B FIGURE 4a (60 W) FIGURE 4b OCCUPIED BANDWIDTH ATTENUATION IN dB BELOW MEAN OUTPUT POWER Required On any frequency more than 50% up to and including 100% of the 25 authorized bandwidth, 20 kHz (10-20 kHz) On any frequency more than 100% up to and including 250% of the 35 authorized bandwidth (20-50 kHz) On any frequency removed from the assigned frequency by more 43+10LogP = 71 than 250% of the authorized (P = 25 W) bandwidth (over 50 kHz) OCCUPIED BANDWIDTH FCC ID: O6E710150B FIGURE 4b (25 W) B. MODULATION CHARACTERISTICS (Continued) The plots are within the limits imposed by Paragraph 90.211(c) for frequency modulation. The horizontal scale (frequency) is 10 kHz per division and the vertical scale (amplitude) is a logarithmic presentation equal to 10 dB per division. C. FREQUENCY STABILITY (Paragraph 2.995(a)(2) and 90.213 of the Rules) Measurement of frequency stability versus temperature was made at temperatures from -30 o C to +50 o C. At each temperature, the unit was exposed to test chamber ambient a minimum of 60 mi- nutes after indicated chamber temperature ambient had stabilized to within ±2 o of the desired test temperature. Following the 1 hour soak at each temperature, the unit was turned on, keyed and frequency measured within 2 minutes. Test temperature was sequenced in the order shown in Table 3, starting with -30 o C. Temperature was monitored with a Keithley 871 digital thermometer. The transmitter output stage was terminated in a dummy load. Primary supply was 13.8 volts. Frequency was measured with a HP 5385A frequency counter connected to the transmitter through a power attenuator. Measurements were made at 45.02 MHz. No transient keying effects were observed. TABLE 3 FREQUENCY STABILITY vs. TEMPERATURE 45.02 MHz; 13.8 Vdc; 60 W Temperature, °C Output Frequency, MHz p.p.m. -29.7 45.020161 3.6 -20.0 45.020269 6.0 - 9.3 45.020182 4.0 - 0.1 45.020106 2.4 10.0 45.020052 1.2 20.2 45.020011 0.2 30.5 45.019977 -0.5 40.5 45.019915 -1.9 50.5 45.019832 -3.7 Maximum frequency error: 45.020269 45.020000 + .000269 MHz The device met a stability of .002% (20 ppm) or a maximum of ±.000900 MHz High Limit 45.020900 MHz Low Limit 45.019100 MHz FCC Rule 90.213(a) specifies .002%.