EE123/198 Radio Hints

EE123/198 Helpful Radio Hints

Radio Tips:

  • How to talk:
    • Hold the radio about 4 inches away from your mouth, antenna in vertical position.
    • Press the Push-to-Talk (PTT) button. Wait 1 second before speaking
    • Speak clearly, slowly, but not too loud so your voice is not over modulated
    • Wait 1 second before releasing the PTT
  • Comprehensive instruction manual for the Baofeng UV-5R is found Here
  • Switch between low(2W) and high(4W) power: short press # key. Letter L will show up on the screen.
  • Repeater reverse mode: short press on * key. Letter R will show up on screen. In this mode, the repeater input and output frequencies are switched. It is used to find out if the person you are talking to, is within simplex range.
  • Voice activation mode (VOX): press menu -> press 4 to enter VOX menu. Press menu -> use arrows to set VOX level. We will use VOX in order to transmit using the computer.
    DONT FORGET TO TURN OFF VOX or the entire Bay Area will hear your conversations
  • About the only way to damage your radio is to transmit (press the side PTT button) without the antenna connected. Further reading

General Operating Tips:

  • Phonetic Alphabet
  • Our class simplex frequency is 146.430 (ch-4), monitor it for EE123 traffic
  • SMPLX2M (ch-1) is 146.520 MHz, the national 2m simplex calling frequency, SMPLX446 (ch-2) is 446.000 MHz. You can most always directly reach fellow hams by transmitting “CQ CQ CQ followed by your callsign” when at higher elevations on this frequencies, especially 146.520 MHz.
  • WW6BAY (ch-43,ch-44) is a linked repeater system covering all of the bay area. It’s 2m, 70cm south bay and 70cm north bay are listed in your radios with the 2, S and N suffixes respectively. It is owned and operated by many local engineers.
  • N6QOP (ch-23) is a fantastic repeater which is part of the CARLA system and has coverage of the Berkeley area as well as east of the hills. Use CARLA (ch-49) to link to the entire system
  • WA6HAM is the Contra Costa ARC repeater. Very good coverage in the east bay
  • You are well aware of this by now, but it’s important enough to merit repeating. Your first and last transmission should always contain your call sign. During an extended contact (QSO), you also need to ID with your callsign at least every 10 minutes.
  • KB6LED is a repeater on top of Grizley peak. It is also be reached through echolink, which makes it an excellent way to access a person with a radio on campus from the internet.
  • N6NFI The most active repeater in the bay area hosting the 9am talknet. Press on the PTT to transmit and then key 699 to get a signal report!


  • Please join the monthly emergency communication net. Net takes place each FIRST WEDNESDAY OF THE MONTH (AT NOON) immediately after the siren tests on the UC Berkeley campus. There are two ways to check in:
    • On repeater N6BRK (Ch-20 on your radio)
    • On the Cal Bears 2m calling frequency 146.430MHz (Ch-4 on your radio)
  • 9AM talk net is a daily net starting at 9am on the N6NFI repeater (Ch 31 on your radio). Its moto: “We encourage new hams to check in and ask questions” Topics vary from very technical:“I built this massive antenna structure” to “I’m drinking my coffee on my commute ,hi everyone”

Programming Cable and Class Bandplan

    In order to program the radio, you will need a USB programming cable and a programming software called Chirp. There may be some windows driver issues discussed in Here. Read install instructions on the Chirp Wiki!!!

    • Baofeng UV-5R programming files: CSV, chirp file
    • Some cables you buy may be faulty, here’s a workaround
    • If you want to make your own cable look Here. You need a 3.5mm plug to 2.5mm plug cable (Amazon link) which you will cut in half, and a CP2102 USB to TTL (Amazon link)
channel Name Frequency Info
1 SMPLX2M 146.520 National 2m simplex calling frequency
2 SMPLX446 446.000 National 70cm simplex calling frequency
3 SPLX-V1 146.415 Simplex channel
4 SPLXCAL 146.430 Simplex channel for the Berkeley campus
5 SPLX-V3 146.445 Simplex channel
6 SPLX-V4 146.460 Simplex channel
7 SPLX-V5 146.475 Simplex channel
8 SPLX-V6 146.490 Simplex channel
9 SPLX-V7 146.505 Simplex channel
10 SPLX-U1 441.000 Simplex channel
11 SPLX-U3 446.500 Simplex channel
20 N6BRK 440.900+ 131.8 NALCO Repeater on Alta Bates
21 WA6ZTY 442.275+ 103.5 LBNL Repeater
22 WA6HAM 145.490- 107.2 Contra Costa ARC Repeater (Berkeley Hills)
23 N6QOP 443.050+ 114.8 CARLA Repeater (Grizzly peak) use this one for local operation and ch-49 for entire California. Internet linked
24 WB6NDJ 146.880- 77.0 Oakland ORCA, ARC Alameda Internet linked
25 WB6NDU 442.400+ 77.0 Oakland ORCA, ARC Alameda
26 KB6LED 145.290- 131.8 Grizzley peak repeater
27 W6CX 147.060+ 100.0 MDARC Mount Diablo Internet linked
28 W6CX-70 441.325+ 100.0 MDARC Mount Diablo (low power)
29 K6POU 145.330- 100.0 Mt Diablo
30 W6SRR 147.045+ 94.8 Sunol Ridge
31 N6NFI 145.230- 100.0 SRI Repeater Stanford Dish – very active 9 am talk net
32 N6BDE 440.200+ 123.0 W6YX Stanford Amature club repeater
33 W6TI 147.360+ 110.9 Northern Cal DX Club, Palo Alto – very good sensitivity
34 W6RGG 147.240+ 107.2 Northern Cal Contest Club San Leandro
35 N6ICW 147.195+ 123.0 N6ICW Mt. Vaca Vacaville Linked to Tahoe
36 AG6AU 147.825- 82.5 Placerville, Western Sierras – wide coverage of central valley
37 K6FB-2M 145.450- 100.0 Los Gatos, Castle Rock
38 K6GWE 146.700- 179.9 Mt Tamalpais
39 W6PW 145.150- 114.8 San Francisco ARC Twin Peaks
40 WA6TOW 146.925- 114.8 CoastSide ARC Pacifica, North Peak
41 AB6VS 440.550+ 94.8 Loma Prieta Amature Club
42 K6SIX 441.350+ 107.2 Mariposa, Mt Bullion
43 WW6BAYS 443.225+ 100.0 BayNET South repeater linked
44 WW6BAYN 443.975+ 100.0 BayNET North repeater linked
45 WR6ABD 146.640- 162.2 WinSystem linked over the world
46 WR6ABDW 442.900+ 162.2 WinSystem linked over the world
47 K6KYAWN 444.850+ 114.8 WinSystem linked over the world
48 K6SJIWN 441.675+ 100 WinSystem linked over the world
49 CARLA 443.050+ 173.8 CARLA Same as N6QOP, but with tone squelche that opens the link to the entire system. Internet linked
50 ISSAPRS 145.825 International Space Station Packet
51 ISSCREW 145.800 International Space Station Voice
60 SO50T74 145.850 Oscar SO-50 Turns on satellite if sleeping (timeout after 15min)
61 SO50-TX 145.850 Oscar SO50 TX frequency
62 SO5015 436.815 Oscar SO50 RX frequency 15 Doppler
63 SO5010 436.810 Oscar SO50 RX frequency 10 doppler
64 SO505 436.805 Oscar SO50 RX frequency 5 doppler
65 SO50-0 436.800 Oscar SO50 RX frequency
66 SO50-5 436.795 Oscar SO50 RX frequency -5 doppler
67 SO50-10 436.790 Oscar SO50 RX frequency -10 doppler
68 SO50-15 436.790 Oscar SO50 RX frequency -15 doppler
70 MURS1 151.82 MURS VHF unlicensed band (not ham band) ch1, only low-power
71 MURS2 151.88 MURS VHF unlicensed band (not ham band) ch2, only low-power
72 MURS3 151.95 MURS VHF unlicensed band (not ham band) ch3, only low-power
73 MURS4 154.57 MURS VHF unlicensed band (not ham band) ch4, only low-power
74 MURS5 154.60 MURS VHF unlicensed band (not ham band) ch5, only low-power
83 MRN-SOS 156.8 Marine SOS Emmergency Frequency (not ham!)
84 MRNSFTY 157.1 Marine Safety Frequency (not ham!)
100 SSTV-V 145.510 Slow-scan-TV Calling frequency
101 XPMT1V 145.530 Experimental modes
102 XPMT2V 145.550 Experimental modes
103 XPMT3V 145.570 Experimental modes
104 XPMT4V 145.590 Experimental modes
105 XPMT1U 443.610 Experimental modes
106 XPMT2U 443.630 Experimental modes
107 XPMT3U 443.650 Experimental modes
108 XPMT4U 443.670 Experimental modes
109 DGTL1V 144.330 Digital Packets
110 DGTL2V 144.450 Digital Packets
111 DGTL3V 144.930 Digital Packets
112 DGTL4V 144.970 Digital Packets
113 DGTL1U 433.550 Digital Packets
114 DGTL2U 433.570 Digital Packets
115 DGTL3U 433.590 Digital Packets
116 DGTL4U 441.500 Digital Packets
117 APRS 144.39 National APRS frequency

Special thanks for John Pauly AG6WH and Sawson KG6NUB for helping gather all the information!