BBOFRS305Family Radio

How to Use Your Cobra M i c ro Ta l k2 - Way Radio 1 Features of This Product •UHF FM Frequencies • No License Required • No Air Time Fees •Up to 2 mile range •14 Main Channels •38 CTCSS Subchannels • LCD Function Display • Talk Confirmation To n e • Ca l l / Ring Bu t to n • Recharging Pads • Retractable Antenna • Auto Battery Saver Circuity • Auto Squelch •10 Memory Locations • Full Channel/CTCSS Scan • Lock Key •Ring/Vibrate Notification • Belt Clip • Water Resistant Contents Features.....................................................................................1 The FRS Story..........................................................................A1 FCC Warnings Included Accessories Controls & Indicators...........................................................A2 Our Thanks to You.................................................................A3 Customer Support.............................................................A3 Operating your microTALK Battery Installation............................................................2 LCD Display..........................................................................4 Turning On............................................................................4 Auto Battery Power Saver...............................................5 Select Main Channel (1-14)............................................5 Select CTCSS Subchannel (00-38)................................7 Battery Low..........................................................................8 Calling Another Party.......................................................9 Talking To Another Party.................................................10 Talk Confirmation Tone....................................................12 Listening For Another Party...........................................12 Auto Squelch........................................................................13 Maximum Range Extender..............................................13 microTALKRange...............................................................13 Advanced Features...............................................................14 Programming Memory Locations................................15 Using Memory Locations................................................19 Scan Function......................................................................21 Ringer/Vibrate Modes......................................................25 Tone Settings.......................................................................28 Lock Function......................................................................30 Dual Watch Function........................................................31 microTALK Range...............................................................35 Making Life Easier And Safer............................................36 External Microphone/Speaker Jack...............................38 Frequency Ranges.................................................................40 microTALKSpecifications..................................................41 Limited Two Year Warranty................................................42 Optional Accessories............................................................43 Order Form...............................................................................44 If You Think You Need Service......................Back Cover Pull lock tab down and lift door up (towards you) to remove battery cover. Insertfour “AAA” batteries. Position batteries according to po l a ri ty marki n g s. Operation 3 Operation 2 Note Batteries not included with microTALK2-way radio. Note Always use high quality alkaline or NiMH batteries. Incorrect positioning can damage both the batteries and the unit. Only the Cobra NiMH battery (Part # FA-BP) pack can be recharged. See Accessories on page ??. Charge ports for recharging NiMH (Nickel Metal Hydride) battery pack are located on back of unit. Note When batteries are low or need charging the BATT LOW indicator will blink.Replace alkaline batteries or recharge NiMH battery pack. Install Batteries Battery Installation Clear antenna. Turning On Your microTalk Press and holdthepower button for 2 seconds. An audible “tone”will indicate the unit is on and then the LCD will go through a 3 second self-test and then go to Operational Mode. Operation 5 Note Whenever the unit is on you can receive communications. Turning On Your microTALK Operation 4 Note The Auto Battery Save Circuit does not effect the unit’s ability to receive incoming transmissions. Auto Battery Power Saver Your microTALKhas a unique circuit designed to extend battery life. If there are no transmissions within 10 seconds,the unit will automatically switch to battery SaveMode. Theicon will flash. Auto Battery Power Saver Illuminating the Display Illuminating the Display Press and releaseLIGHT/MAX RANGE button to illuminate display for ten seconds. Note Units must be on same channel and subchannels to communicate. Note Channels 8-12 generally are less used and give better results for communications in most areas. Note Push and hold the channel up/down button for fast channel advance. Select Main Channel Select Main Channel (1-14) Turn on the microTALK.An audible “tone”will indicate the unit is on and then the LCD will go through a 3 second self-test and then go to Operational Mode. Selectchannel by moving the Channel Button up or down. Selectmain channel by the Channel Button up or down. Operation 7 Operation 6 Note If you push and hold the Mode Button,the LCD display will cycle through the different functions. Note To return to Operational Mode and not save your last setting push and release talk button. Note CTCSS (Coded Tone Controlled Squelch System) is an advanced subcoding system that allows segmentation of a main channel. Select CTCSS Subchannel Push and releaseMode Button.Small num- bers flash next to channel display on LCD. Select CTCSS Subchannel (00-38) The CTCSS Subchannel allows…

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

Side View – Channel Up/Down Side View – Push to Talk Top View

PCB, Bottom View PCB, Top View

ENGINEERING STATEMENT For Type Certification of Cobra Electronics Corporation Model No: FRS 305 FCC ID: BBOFRS305 I am an Electronics Engineer, a principal in the firm of Hyak Laboratories, Inc., Springfield, Virginia. My education and experience are a matter of record with the Federal Communications Commission. Hyak Laboratories, Inc. has been authorized by Cobra Electronics Corporation to make type certification measurements on the FRS 305 transceiver. These tests made by me or under my supervision in our Springfield laboratory. Test data and documentation required by the FCC for Type Certification are included in this report. The data verifies that the above mentioned transceiver meets FCC requirements and Type Certification is requested. ______________________________ Rowland S. Johnson Dated: April 7, 2000 A. INTRODUCTION The following data are submitted in connection with this request for type certification of the FRS 305 transceiver in accordance with Part 2, Subpart J of the FCC Rules. The FRS 305 is a portable, battery operated, UHF, frequency modulated transceiver intended for 12.5 kHz channel family radio service applications in the 462.5625-467.7125 MHz band. It operates from a nominal 6.0 Vdc battery supply. MFR rated output power is 0.5 watts ERP. B. GENERAL INFORMATION REQUIRED FOR TYPE CERTIFICATION (Paragraph 2.983 of the Rules) 1. Name of applicant: Cobra Electronics Corporation 2. Identification of equipment: FCC ID: BBOFRS305 a. The equipment identification label is submitted as a separate exhibit. b. Photographs of the equipment are submitted as a separate exhibit. 3. Quantity production is planned. 4. Technical description: a. 11k0F3E emission b. Frequency range: 462.5625 - 467.7125 MHz. c. Operating power of transmitter is fixed at the factory at less than 0.5 W ERP. d. Maximum power permitted is 0.5 watts, and the FRS 305 fully complied with that power limitation. e. The dc voltage and dc currents at final amplifier: Collector voltage: 5.9 Vdc Collector current: 0.50 A f. Function of each active semiconductor device: See Appendix 1. g. Complete schematic diagram is submitted as a separate exhibit. h. A draft instruction manual is submitted as a separate exhibit. i. The transmitter tune-up procedure is submitted as a separate exhibit. 2 B. GENERAL INFORMATION (continued) j. A description of circuits for stabilizing frequency is included in Appendix 2. k. A description of circuits and devices employed for suppression of spurious radiation and for limiting modulation is included in Appendix 3. l. Not applicable. 5. Data for 2.985 through 2.997 follow this section. C. RF Power Output (Paragraph 2.985(a) of the Rules) The FRS 305 has a permanently attached built-in antenna without provisions for a coaxial connector. Therefore RF power output was calculated, see Table 1. (The transmitter was tuned by the factory.) TABLE 1 Operating Freq., MHz Power watts into a dipole antenna 462.5625 0.495 D. 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 an Audio Precision System One integrated test system. 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 integrated test system. The curves show compliance with paragraphs 2.987(b). 3. Figure 3 is a graph of the post-limiter low pass filter which provides 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 integrated test system on the Boonton 8220 modulation meter audio output. 3 4. Occupied Bandwidth (Paragraphs 2.989(c) of the Rules) Figure 4 is a plot of the sideband envelope of the transmitter output taken with a Tektronix 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 2323 Hz, the frequency of maximum response. Measured modulation under these conditions was 1.9 kHz. Emission designator: (2M + 2D) (2 x 3 kHz) + (2 x 2.5 kHz) = 11k0F3E 4 FIGURE 1 MODULATION FREQUENCY RESPONSE MODULATION FREQUENCY RESPONSE FCC ID: BBOFRS305 FIGURE 1 5 FIGURE 2 AUDIO LIMITER CHARACTERISTICS AUDIO LIMITER CHARACTERISTICS FCC ID: BBOFRS305 FIGURE 2 6 FIGURE 3 AUDIO LOW PASS FILTER RESPONSE AUDIO LOW PASS FILTER RESPONSE FCC ID: BBOFRS305 FIGURE 3 7 FIGURE 4 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, 12.5 kHz (6.25-12.5 kHz) On any frequency more than 100%, up to and including 250% of the 35 authorized bandwidth (12.5-31.25 kHz) On any frequency removed from the assigned frequency by more 43+10LogP = 40 than 250% of the authorized (P = 0.495) bandwidth (over 31.25 kHz) OCCUPIED BANDWIDTH FCC ID: BBOFRS305 FIGURE 4 8 D. MODULATION CHARACTERISTICS (Continued) The plots are within FCC limits. The horizontal scale frequency) is 10 kHz per division and the vertical scale amplitude) is a logarithmic presentation equal to 10 dB per division. E. SPURIOUS EMISSIONS AT THE ANTENNA TERMINALS (Paragraph 2.991 of the Rules) The FRS 305 has a permanently attached antenna. There is no connector for an external antenna. Therefore, no antenna terminal conducted measurements were made. F. DESCRIPTION OF RADIATED SPURIOUS MEASUREMENT FACILITIES A description of the Hyak Laboratories’ radiation test facility is a matter of record with the FCC. The facility was accepted for radiation measurements from 25 to 1000 MHz on October 1, 1976 and is currently listed as an accepted site. G. FIELD STRENGTH MEASUREMENTS OF SPURIOUS RADIATION Field intensity measurements of radiated spurious emissions from the FRS 305 were made with a Tektronix 494P spectru…

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