Baofeng microphone wiring. You must plug the earphone into the 3. Th espeaker plug is wired to earth/common as one would expect. 5mm plug carries the ground connection for pretty much everything. MIC PTT +V ( a positive voltage to run the electret – we don’t use this at all in this 1We are just going to use the cable and plug end, so you can keep the electret microphone element and LED for other projects. . Apr 13, 2018 · Many constructors like to use a standard 4 pin mic jack or similar style 8 pin jack used by the big three Japanese amateur rig manufacturers as illustrated below: Mike ZL1AXG uses Kenwood wiring on a standard 8 pin mic connector as shown below. By understanding how to read the schematic, you can troubleshoot and repair any issues with your speaker mic more effectively. 3) Details on antenna connections, extended antenna threads, and adapters for different antenna types. You can even wire up the mic later on to work with our Alachua County data RJ-45 jack – but that is a story for another day. 5 mm plug, a 2. Using a CP2102 USB to TTL UART chip, a 3. The board requires you to be registered and logged in to view this forum. 5 (1/8”) jack is actually for the microphone as shown in Figure 2 For reference, a typical wiring diagram for a 'Cheapo' Chinese speaker/mic is shown above (they don't all have the LED). Jun 15, 2022 · The feedback squealing on volume settings above 11 or 12 is can be annoying, so I quite liked the idea of Modifying a Cheap Baofeng Speaker Mic for (tr)uSDX Use by WA2T. 2) Information on programming cables for various radios and cloning cables. Mar 21, 2012 · I own 4 UV-5R's (newest firmware version) and the modulation is very good with the built-in mic and with the Baofeng speaker microphone on all 4. 5 mm plug, solder, wire, heat shrink tubing, and some time I have built a programming cable for Baofeng radios that is not dependent on the Prolific chips and driver. It can be seen that the 2. This type of comprehensive The Baofeng speaker mic schematic is a visual representation of the internal wiring and components of a Baofeng speaker microphone. Gain of the mic can be adjuster varying the bias resistance R1. 5mm (1/8”) jack on the microphone – you can’t plug normal headphones into a Baofeng unless they have the smaller plug, because of the jacks on the side of the UV-5r, the smaller one is the earphone – the 3. By examining the pin configuration, individuals can ascertain the specific functions assigned to each pin and effectively optimize their usage of the radio device. Whence I bought some cheap Baofeng handheld speaker/mics. The capacitor is there to block that DC voltage from reaching the microphone input of the radio, while allowing the AC signal (your voice) to pass. 4) Troubleshooting for erratic charger behavior and potential fixes. Is there a better choice of microphone? The photo above shows how to use earphones/headset with the Baofeng UV-5R. For many people, it can be a daunting task to figure out the speaker mic wiring diagram for Baofeng radios. In my first attempt I cut a 3. As a point of note, I would probably omit the LED as it could impact the transmit audio quality due to being an extra load across the microphone, possibly reducing the supply voltage Aug 18, 2018 · The wiring diagram for the modified microphone is shown below, along with the original wiring. I have not measured it, but suspect it is a fairly low value, included for EMC filtering rather than audio shaping. Is there a better choice of microphone? Jun 15, 2022 · The feedback squealing on volume settings above 11 or 12 is can be annoying, so I quite liked the idea of Modifying a Cheap Baofeng Speaker Mic for (tr)uSDX Use by WA2T. Sep 4, 2014 · Baofeng UV-5R External Mic and PTT Here is the simplest circuit or just a setup to interface external condenser mic and a PTT switch to a UV-5R VHF transceiver. This setup can be used by those who wish to make a base station with fixed external antenna using UV-5R. The Baofeng microphone has a chip capacitor in parallel with the microphone capsule. Nov 29, 2016 · The secret with wiring a Baofeng hand held to a mic is that the mic/ptt shield is ONLY connected to earth/common via the PTT switch. Username: Password: I forgot my password Remember me Hide my online status this session Apr 13, 2018 · Many constructors like to use a standard 4 pin mic jack or similar style 8 pin jack used by the big three Japanese amateur rig manufacturers as illustrated below: Mike ZL1AXG uses Kenwood wiring on a standard 8 pin mic connector as shown below. This document provides technical information about Baofeng radios including: 1) Pinouts for speaker microphones and details on dual PTT switches. I know that our Kenwood radios have a blocking capacitor built-in to their internal circuitry, but not sure about the Beofengs. Feb 21, 2026 · Speaker Microphone Pin Out, Dual PTT Switching,Programming Cables, SMA Antenna Connection, Extended Antenna Threads for Baofeng UV 3, UV 5 Series handheld transceivers Speaker Microphone Pin Out Anytone, BTech, Baofeng, Kenwood, Wouxun Dual PTT Switch Baofeng UV-82 series Jan 2, 2022 · Baofeng Speaker Mic Wiring Diagram Are you an amateur radio enthusiast who's looking for a comprehensive Baofeng speaker mic wiring diagram? If so, this article can help you get the information and resources you need to successfully complete your project. Any other time it is NOT connected to earth/common. Reply Herrpiluso September 8, 2016 at 3:49 AM Jun 11, 2024 · dmfalk D J Baofeng Microphone Issue on Baofeng DM-1701: Near-Inaudible Audio Level jecavallin-LU Dec 5, 2025 Budget and Entry Level Transceivers Replies 4 Views 656 Dec 26, 2025 The mic connector of the Baofeng BF-9500 radio features a distinctive pin layout that is responsible for transmitting and receiving audio signals. knn eoe xov wmg wzw lax ins wor qis oie hya eqh efa cce vzs