Q9FPX666Professional FM Transceiver

RE: FCC ID Q9FPX666 Applicant: Holzberg Communications, Inc. 731 Confirmation Number: EA108919 Mr. Lyles: This is in response to correspondence received on September 19 regarding the Holzberg project. We have identified and resolved those items of concern and they are addressed below. We apologize for any inconvenience this may have caused and request that you proceed with all deliberate haste on our clients behalf. Thank you. 1. Photos showing the 2 1/2” L x ¾”W Plastic belt clip attached to the PX666 unit with belt clip instructions for installation are on page 6 of the manual. 2. SAR data is not required for this radio device. Operating instructions and labeling information apply as part of the 47CFR 2.1033(c)(3) section and is included in the manual. 3. There was an error made in the EMC test report. The PX666 measures out at 3.8 watts. 4. I believe that there was an error made on the 731. I believe that we checked number 5 as Certification. In question number 8 we answered 8 c-e. This was in- correct according to the directions for certification. We did not need to answer 8c-e. 5. My client would like to decline the confidentiality option attached to this product. 6. Again there was an error on the 731. The PX666 is not a software defined radio. The end user is not capable and does not possess the software to change the frequencies on the PX666. Picture #1 with (belt clip 2 ½”L x ¾”W) attached Picture #2 with belt clip attached

PX – 666 Picture of the Back with the battery PX – 666 Picture of the Back without the battery PX – 666 Picture of the Front PX – 666 Picture of the Left side PX – 666 Picture of the Circuit Board #1

PUXING Distributed Exclusively In USA By: HOLZBERG COMMUNICATIONS, INC. Totowa, NJ 07512 1-800-654-9550 PX-666 Professional FM Transceiver FCC ID: Q9FPX666 Serial No.

PX – 666 Picture of the Circuit Board #2 PX – 666 Picture of the Circuit Board #3 PX – 666 Picture of the Circuit Board #4

Applicant: HOLZBERG COMMUNICATION INC. FCC ID: EXHIBIT 6 Page 1 8/11/2006 REPORT OF MEASURED DATA This report contains the measured data for the PX-666 equipment as follows: EXHIBIT 6A: RF Power Output (3 scans) Figure 6A.1 On Channel 1 setting, Frequency 455.9869 Figure 6A.2 On Channel 8 setting, Frequency 459.7250 Figure 6A.3 On Channel 8 setting, Frequency 459.7250 EXHIBIT 6B: Modulation Limiting Characteristics (table) EXHIBIT 6C: Occupied Bandwidth (6 scans) Figure 6C.1 On Channel 1 setting, Frequency 455.9873 Figure 6C.2 On Channel 8 setting, Frequency 459.7240 Figure 6C.3 On Channel 15 setting, Frequency 463.7740 Figure 6C.4 On Channel 1 setting, Frequency 455.9873 Figure 6C.5 On Channel 8 setting, Frequency 459.7240 Figure 6C.6 On Channel 15 setting, Frequency 463.7740 EXHIBIT 6D: Conducted Emissions EXHIBIT 6E: Radiated Emissions EXHIBIT 6F: Frequency Stability (table) EXHIBIT 6G: Transient Frequency Behavior (4 scans) Figure 6I.1 FM 25 KHz Key-up Time; Frequency 455.9873 MHz Figure 6I.2 FM 25 KHz De-Key Decay Time; Frequency 455.9873 MHz Figure 6I.1 FM 12.5 KHz Key-up Time; Frequency 455.9873 MHz Figure 6I.2 FM 12.5 KHz De-Key Decay Time; Frequency 455.9873 MHz Applicant: HOLZBERG COMMUNICATION INC. FCC ID: EXHIBIT 6 Page 2 8/11/2006 EXHIBIT 6A: RF Power Output (3 scans) The RF power output was measured with a HP 8593EM EMC Analyzer and printed with a HP 7550A Graphic Plotter. Figure 6A.1 On Channel 1 setting, Frequency 455.9869 RF Power Output 28.50 dBm Figure 6A.2 On Channel 8 setting, Frequency 459.7250 RF Power Output 34.01 dBm Applicant: HOLZBERG COMMUNICATION INC. FCC ID: EXHIBIT 6 Page 3 8/11/2006 EXHIBIT 6A: RF Power Output (3 scans) Figure 6A.3 On Channel 8 setting, Frequency 459.7250 RF Power Output 34.01 dBm EXHIBIT 6B: Modulation Limiting Characteristics (table) Applicant: HOLZBERG COMMUNICATION INC. FCC ID: EXHIBIT 6 Page 4 8/11/2006 EXHIBIT 6B: Modulation Limiting Characteristics (table) EXHIBIT 6B: Modulation Limiting Characteristics (table) Applicant: HOLZBERG COMMUNICATION INC. FCC ID: EXHIBIT 6 Page 5 8/11/2006 EXHIBIT 6B: Modulation Limiting Characteristics (table) Applicant: HOLZBERG COMMUNICATION INC. FCC ID: EXHIBIT 6 Page 6 8/11/2006 ccupied Bandwidth (6 scans) (Blue = No Modulation, Red = 5 KHz Voice Modulation) EXHIBIT 6C: O Figure 6C.1 On Channel 1 setting, Frequency 455.9873 Figure 6C.2 On Channel 8 setting, Frequency 459.7240 (Blue = No Modulation, Red = 5 KHz Voice Modulation) Applicant: HOLZBERG COMMUNICATION INC. FCC ID: EXHIBIT 6 Page 7 8/11/2006 cupied Bandwidth (6 scans) (Blue = No Modulation, Red = 5 KHz Voice Modulation) EXHIBIT 6C: Oc Figure 6C.3 On Channel 15 setting, Frequency 463.7740 Figure 6C.4 On Channel 1 setting, Frequency 455.9873 (Blue = No Modulation, Red = 5 KHz Voice Modulation) Applicant: HOLZBERG COMMUNICATION INC. FCC ID: EXHIBIT 6 Page 8 8/11/2006 EXHIBIT 6C: Occupied Bandwidth (6 scans) Figure 6C.5 On Channel 8 setting, Frequency 459.7240 (Blue = No Modulation, Red = 5 KHz Voice Modulation) Figure 6C.6 On Channel 15 setting, Frequency 463.7740 (Blue = No Modulation, Red = 5 KHz Voice Modulation) Applicant: HOLZBERG COMMUNICATION INC. FCC ID: EXHIBIT 6 Page 9 8/11/2006 EXHIBIT 6D & 6E: Conducted & Radiated Emissions We tested for Conducted & Radiated Emissions from 10 MHz to lowest frequency of the radio to the 10 th harmonic of the highest frequency of the radio. We found NO emissions above –20 dBm EXHIBIT 6F: Frequency Stability (table) -30 c Measurement Time Frequency Measurement Time Frequency 0 459.7250 MHz 25 459.7255 MHz 5 459.7255 MHz 30 459.7250 MHz 10 459.7270 MHz 15 459.7265 MHz 20 459.7260 MHz -20 c Measurement Time Frequency Measurement Time Frequency 0 459.7250 MHz 25 459.7260MHz 5 459.7255 MHz 30 459.7255 MHz 10 459.7260 MHz 15 459.7270 MHz 20 459.7255 MHz -10 c Measurement Time Frequency Measurement Time Frequency 0 459.7250 MHz 25 459.7245 MHz 5 459.7250 MHz 30 459.7250 MHz 10 459.7240 MHz 15 459.7250 MHz 20 459.7265 MHz -0 c Measurement Time Frequency Measurement Time Frequency 0 459.7255 MHz 25 459.7235 MHz 5 459.7270 MHz 30 459.7245 MHz 10 459.7245 MHz 15 459.7265 MHz 20 459.7250 MHz +10c Measurement Time Frequency Measurement Time Frequency 0 459.7255 MHz 25 459.7250 MHz 5 459.7250 MHz 30 459.7260 MHz 10 459.7255 MHz 15 459.7265 MHz 20 459.7250 MHz +20 c Measurement Time Frequency Measurement Time Frequency 0 459.7240 MHz 25 459.7250 MHz 5 459.7255 MHz 30 459.7230 MHz 10 459.7260 MHz 15 459.7255 MHz 20 459.7260 MHz Applicant: HOLZBERG COMMUNICATION INC. FCC ID: EXHIBIT 6 Page 10 8/11/2006 EXHIBIT 6F: Frequency Stability (table) +30 c Measurement Time Frequency Measurement Time Frequency 0 459.7235 MHz 25 459.7250 MHz 5 459.7235 MHz 30 459.7250 MHz 10 459.7260 MHz 15 459.7250 MHz 20 459.7255 MHz +40 c Measurement Time Frequency Measurement Time Frequency 0 459.7250 MHz 25 459.7245 MHz 5 459.7255 MHz 30 459.7250 MHz 10 459.7235 MHz 15 459.7245 MHz 20 459.7240 MHz +50c Measurement Time Frequency Measurement Time Frequency 0 459.7260 MHz 25 459.7250 MHz 5 459.7260 MHz 30 459.7250 MHz 10 459.7260 MHz 15 459.7245 MHz 20 459.7260 MHz Applicant: HOLZBERG COMMUNICATION INC. FCC ID: EXHIBIT 6 Page 11 8/11/2006 EXHIBIT 6G: Transient Frequency Behavior (4 scans) Figure 6I.1 FM 25 KHz Key-up Time; Frequency 455.9873 MHz Figure 6I.2 FM 25 KHz De-Key Decay Time; Frequency 455.9873 MHz Applicant: HOLZBERG COMMUNICATION INC. FCC ID: EXHIBIT 6 Page 12 8/11/2006 EXHIBIT 6G: Transient Frequency Behavior (4 scans) Figure 6I.1 FM 12.5 KHz Key-up Time; Frequency 455.9873 MHz Figure 6I.2 FM 12.5 KHz De-Key Decay Time; Frequency 455.9873 MHz

November 2, 2006 RE: FCCID Q9FPX666\ Applicant: Holzberg Communications, Inc. Correspondence Reference number: 31939 731 Confirmation Number: EA108919 Good Morning Sir. Emissions designator calculation: 16K0F3E BW = 2(M+D) = 2*(3kHz + 5 kHz) = 16kHz = = => 16K0 F3E portion of the designator indicates voice.