You would expect this to be ground - but it isn't! Note that the micĬonnector is a "stereo" plug. Should connect the PTT line (red) to the "sleeve" of the mic connector. KENWOOD - (TH22AT, etc.) Most Kenwood HTs do not require a resistor for the PTT. Two Plug Types (See the warning above about the use of mono The IC-281 forĮxample, requires that both plugs be stereo. Handhelds use mono plugs, but some require stereo plugs. The internal resistor in the BayPac should work just fine.ĬAUTION: Check your radio manual before you wire-up your HT. ICOM - PTT is normally activated by grounding the mic input through a Note that the "ring" of the mic connector is +5 volts (don't connect to anything). YOU MUST use stereo plugs, even though you are not using the extra connections. Support staff before proceeding with the installation.ĪLINCO - Most Alinco handhelds have a 2.5mm STEREO plug for the mic and a 3.5mm STEREO plug for the speaker. You suspect that it could be a problem, you might want to consult our tech Up the PTT keying transistor in the BayPac. One of these, you may need to key the PTT with a small relay to avoid burning The PTT line and/or draw heavy PTT current. Internal speaker, it is "high level" and will drive the BayPac properly.Ī few of the older radios (particularly old HF radios) have high voltage on The audio level is to connect a speaker to it. (or rewire the mic connector for high level audio). If this is theĬase with your radio, you should use the audio from the external speaker plug Level is not nearly enough for the BayPac to receive properly. Some radios provide only low level (100 mv typ.) audio output. You use this pin to drive the BayPac, be sure it is "high level" (speaker)Īudio. Many newer radios have a pin on the mic connector called "audio out". Within the same manufactures models in some cases. There seems to be a total lack of standardization for pin-outs on mobileĪnd base station mic connectors. Please note that with the shunt installed, youĪre using the BayPac's "internal" keying resistor. Information applies to most (but not all) models by the manufacturers mentioned. IMPORTANT: There is really no "standardized" approach for connecting the PTT line to handhelds. They could save you considerable time and frustration! Section of our BayPac Troubleshooting Page for some important tips. Remember that it's possible to DAMAGE YOUR RADIO or BayPac by incorrectlyīefore you attempt to operate packet with your HT, be sure to Double check this information against your radio's manual before Many have been submitted by customers who may have made anĮrror. Guide! Tigertronics has not verified the correctness of all of theseĮntries. This wiring information should only be used as a general Of our other products (RTX-12OEM, RTX-24, etc.). Note that this information does NOT apply to any Telemetry modem since it has the same radio interface (cable and HT jumper) as This information can also be used with the RTX-12 NOTE: This page contains radio wiring informationįor our BayPac series modems. Much more capable hardware ( SignaLink USB). Version of Windows released in the last ~20 years, and have been replaced by This is due to the fact that these modems have not been compatible with any Our BayPac modem series (BP-1, BP-2, BP-2M and BP-96A) is no longer supportedīeyond the information found below and on other related pages of our website. Radio Wiring Information Radio Wiring Information
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