Difference between revisions of "Baofeng UV-5R"
From The RadioReference Wiki
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===DTMF=== | ===DTMF=== | ||
* On firmware version BFS311, and possibly others, it is not possible to send a DTMF "D" tone. Pressing the [EXIT] key sends "0" instead of "D". | * On firmware version BFS311, and possibly others, it is not possible to send a DTMF "D" tone. Pressing the [EXIT] key sends "0" instead of "D". | ||
| − | * The internal microphone is hot when DTMF | + | * The internal microphone is hot when DTMF or 1750 Hz burst tones are transmitted. |
* Pressing keypad keys while transmitting does not mute the mic. The mic can pick up the sidetone from the speaker and overdrive or distort the transmitted tones. | * Pressing keypad keys while transmitting does not mute the mic. The mic can pick up the sidetone from the speaker and overdrive or distort the transmitted tones. | ||
| − | *Set Menu 16 DTMFST to OFF to keep the sidetone from interfering with transmitted tones. | + | * Set Menu 16 DTMFST to OFF to keep the sidetone from interfering with transmitted DTMF and 1750 Hz burst tones. |
===Power On Messages=== | ===Power On Messages=== | ||
| Line 60: | Line 60: | ||
===Scanning=== | ===Scanning=== | ||
* Scanning stops on any signal or noise even in CTCSS/DCS decode mode. | * Scanning stops on any signal or noise even in CTCSS/DCS decode mode. | ||
| − | * Scan speed ~3.37 channels per second. ( | + | * Scan speed is ~3.37 channels per second. (It takes 29.6 seconds to scan 100 channels) |
| − | * Scan delay time CO mode ~6 seconds. | + | * Scan delay time in CO mode is ~6 seconds. |
| − | * Scan resume time TO mode ~6 seconds. If carrier drops in less than 6 seconds then scanning resumes immediately with no delay. | + | * Scan resume time in TO mode is ~6 seconds. If the carrier drops in less than 6 seconds then scanning resumes immediately with no delay. |
===Squelch=== | ===Squelch=== | ||
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===Squelch Tail Elimination (STE)=== | ===Squelch Tail Elimination (STE)=== | ||
* When Menu 35 STE is ON, the radio sends a 55 Hz tone for ~280 mS when the PTT key is released. This occurs even if no CTCSS encode tone is selected (Menu 13 T-CTCS is OFF). Setting Menu 35 STE to OFF disables this. | * When Menu 35 STE is ON, the radio sends a 55 Hz tone for ~280 mS when the PTT key is released. This occurs even if no CTCSS encode tone is selected (Menu 13 T-CTCS is OFF). Setting Menu 35 STE to OFF disables this. | ||
| − | * When | + | * When DCS encode is enabled, the radio sends the standard DCS turnoff code (134.4 Hz tone) for ~280 mS when PTT is released. Setting Menu 35 STE to OFF disables this. |
| − | * The microphone remains hot while the STE 55 Hz tone or | + | * The microphone remains hot while the STE 55 Hz tone or DCS 134.4 Hz turnoff code are being sent. |
| − | * In decode mode if a signal with CTCSS or DCS is received and the tone is dropped, the squelch remains open for ~2 S. | + | * In CTCSS or DCS decode mode if a signal with the proper CTCSS tone or DCS code is received and the tone/code is dropped, the squelch remains open for ~2 S. |
* Menu 36 RP-STE and Menu 37 RPT-RL appear to have no function at all in any combination or with Menu 35 STE ON or OFF. | * Menu 36 RP-STE and Menu 37 RPT-RL appear to have no function at all in any combination or with Menu 35 STE ON or OFF. | ||
| − | * Upon receiving a 55 Hz tone the the receive audio is muted, even when there is no receive CTCSS tone selected | + | * Upon receiving a 55 Hz tone the the receive audio is muted, even when there is no receive CTCSS or DCS tone selected and regardless of Menu 35 STE, Menu 36 RP-STE, and Menu 37 RPT-RL settings. The receiver remains muted for ~750 mS after the carrier or 55 Hz tone drops. |
===UV-5R Stock Dual Band Helical Antenna=== | ===UV-5R Stock Dual Band Helical Antenna=== | ||
Revision as of 12:27, 13 April 2014
Contents
Baofeng UV-5R Notes
- It is not known how much of this information applies to other firmware versions, model numbers or clones from other manufacturers.
Test Unit
- Baofeng UV-5R
- Firmware BFS311 130903N
- S/N US201311****
- S/N may also be a date code. Unit was purchased in 11/2013 and may have been manufactured the same month.
DTMF
- On firmware version BFS311, and possibly others, it is not possible to send a DTMF "D" tone. Pressing the [EXIT] key sends "0" instead of "D".
- The internal microphone is hot when DTMF or 1750 Hz burst tones are transmitted.
- Pressing keypad keys while transmitting does not mute the mic. The mic can pick up the sidetone from the speaker and overdrive or distort the transmitted tones.
- Set Menu 16 DTMFST to OFF to keep the sidetone from interfering with transmitted DTMF and 1750 Hz burst tones.
Power On Messages
Holding certain keys while powering on the unit displays the following messages:
- [3] Firmware version
- [6] Unknown. May be firmware date code. Can be changed with CHIRP programming software.
Preloaded Factory Test Frequencies
Ch Freq Tone 1 452.125 69.3 2 453.225 91.5 3 454.325 136.5 4 455.425 151.4 5 456.525 192.8 6 457.625 241.8 7 458.725 025N 8 459.825 134N 9 461.925 274N 10 462.225 346N 11 463.325 503N 12 464.425 073R 13 465.525 703R 14 402.225 15 437.425 16 479.975 17 138.550 18 157.650 19 172.750 20 438.500 21 155.700 VFO A 155.500 VFO B 136.000 FM 100.7
Receiver
- Receiver makes light crackling sounds while moving, even when receiving extremely strong signals from a few feet away. It appears to be some type of SDR artifact.
- Occasionally squlech opens and weak buzzing noises can be heard. May be SDR artifact or microprocessor noise.
Repeater STE
- Menu 36 RP-STE and Menu 37 RPT-RL do not appear to have any function at all.
Roger Beep
- 1st tone 1123 Hz 136 mS
- 2nd tone 865 Hz 202 mS
- No delay before tones are sent. No space between tones.
Scanning
- Scanning stops on any signal or noise even in CTCSS/DCS decode mode.
- Scan speed is ~3.37 channels per second. (It takes 29.6 seconds to scan 100 channels)
- Scan delay time in CO mode is ~6 seconds.
- Scan resume time in TO mode is ~6 seconds. If the carrier drops in less than 6 seconds then scanning resumes immediately with no delay.
Squelch
- Setting Menu 0 SQL to 0 opens the squelch, settings 1-9 appear to be the same fixed level.
Squelch Tail Elimination (STE)
- When Menu 35 STE is ON, the radio sends a 55 Hz tone for ~280 mS when the PTT key is released. This occurs even if no CTCSS encode tone is selected (Menu 13 T-CTCS is OFF). Setting Menu 35 STE to OFF disables this.
- When DCS encode is enabled, the radio sends the standard DCS turnoff code (134.4 Hz tone) for ~280 mS when PTT is released. Setting Menu 35 STE to OFF disables this.
- The microphone remains hot while the STE 55 Hz tone or DCS 134.4 Hz turnoff code are being sent.
- In CTCSS or DCS decode mode if a signal with the proper CTCSS tone or DCS code is received and the tone/code is dropped, the squelch remains open for ~2 S.
- Menu 36 RP-STE and Menu 37 RPT-RL appear to have no function at all in any combination or with Menu 35 STE ON or OFF.
- Upon receiving a 55 Hz tone the the receive audio is muted, even when there is no receive CTCSS or DCS tone selected and regardless of Menu 35 STE, Menu 36 RP-STE, and Menu 37 RPT-RL settings. The receiver remains muted for ~750 mS after the carrier or 55 Hz tone drops.
UV-5R Stock Dual Band Helical Antenna
- Labeled 136-174, 400-520 MHz
- Base is grounded.
- Tap point 11 turns up from base. Has unknown value capacitor at tap point.
- Top section 19 turns from tap point to end of coil has wider spacing.
- Youtube video of antenna dissassembly: http://www.youtube.com/watch?v=MtnDvWGTKpk
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