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Re: radio shutting off when I press PTT
Jayne, you aren't being treated as you think. What you are describing has happened to all of us at least once, and the problem was a low or faulty battery. Do you have a second battery or know someone whose battery you can install for a test and see if the same thing happens in your HT?? Also, what happens when you reduce output power and transmit,using your present battery??
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Re: radio shutting off when I press PTT
Scott Thomas
Hello Jayne,
I would say you need a new battery.? They are not very costly.? You could try this link:? They are around $35 - Can't think of anything else it would be.7.2V (after charging) is a low battery and this voltage I believe means it needs to be replaced.? Not enough power to transmit.? :)? I would purchase the OEM Yaesu Battery.? Really worth it. -Scott? |
Re: radio shutting off when I press PTT
Charge the battery.?
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Re: radio shutting off when I press PTT
Jayne:
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Sounds like the battery needs charging. Dave - WB6DHW On 10/28/2023 1:18 PM, Jayne Rising via groups.io wrote:
Hello, |
Re: radio shutting off when I press PTT
开云体育Battery needs charging or replaced. Cannot transmit when plugged in to wall wart.?Jardy Dawson WA7JRD Message sent by....Oh look!! Pretty lights!! On Oct 28, 2023, at 14:26, Jayne Rising <jayne.rising@...> wrote:
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Re: radio shutting off when I press PTT
Just an (educated) guess, bad or discharged battery?
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<>< 73 From "The Beaconeer's Lair" ><> Specializing in DXing NDBs (Longwave Beacons) Phil, KO6BB, (\__/) (=’.'=) (”)冲(”) EQUIPMENT: YAESU: FTDX-101MP Xceiver, Dual SDR Receivers (~2020) YAESU: FTDX-3000 Xceiver, DSP IF, 300Hz Roofing filter (~2019). Portables: Eton Elite 750 (2), AKA Grundig Satelite 750 (2020) Sangean ATS-909X2 (2021), Tecsun PL-990 (2021) SDRs: Perseus, Airspy Discovery HF+, SDRplay RSPdx, Softrock LF Scanner: Uniden SDS200 ACC: MFJ-993B Auto Antenna Matcher. HOMEBREW 4 Port Antenna Multicoupler, Feeds 4 RX's. HOMEBREW Tunable LF-MF Pre-Amp. Ratzlaff 440Hz, 6.5Hz BW Audio Filter Autec Research QF1 Audio Filter. ANTENNAS: 88 foot Long Ladder-line fed dipole, ~35 feet AGL for MW/HF. Top Loaded Tee (Dipole fed as single element). Butternut HF-6V 6 Band Vertical, ~12 Feet AGL for 75-10M Ratzlaff Active whip, 5 Foot Long, ~22 Feet AGL For LF/MW/HF. Wellbrook ALA1530LN Loop For LF/MW/HF at ~17 Feet AGL Discone at ~35 Feet AGL For Scanner QTH: Merced, California, 37, 18, 37N 120, 30, 6W CM97rh On 10/28/2023 8:18 PM, Jayne Rising wrote:
Hello, |
radio shutting off when I press PTT
Hello,
I'm new to the group and somewhat to ham radio. My Yaesu FT60R worked fine yesterday. Today I can hear on the local repeater but when I try to transmit, the radio turns off completely. It comes back on when I release the PTT button. To my best knowledge nothing has changed since I was yakking away happily on the local repeater yesterday. I've looked at the manual, which sadly has no troubleshooting section. I've also searched messages here to no avail. Is there a direction I can go to solve my problem? Thanks in advance! FYI if it helps: the repeater receive frequency is 147.120. The offset frequency is 147.720. These things were programmed into the used radio I bought so if it's a sudden programming error, I didn't do it! LOL Jayne |
Re: DIY Programming Cable
The official programming set is: Yaesu CT-42 which contains CT-28 cable and the CT-29 Interface unit
The resistor inside the radio is for the Clone function between 2 radios, a resistor is absolutely necessary when used with an external programming interface. When used with a USB to UART device a diode is required, it may sometimes JUST about work on a genuine FTDI chipset as per your case, but not reliably and it will be borderline, it also depends on how the FTDI chipset has been implemented and it will absolutely not work on every system or every radio. It will definitely not work without a diode or resistor on a CP21xx family of USB to UART IC's. A diode may not always be necessary with a RS232 to TTL level converter with inversion, whether that is a MAX232 or similar or through transistor level shifting, but it does not cause any harm in that scenario and can help stability on some systems. The same interface is used for a VX170/FT270, VX6R/E, FT70D/E etc and they will definitely not work without a resistor. I'm on holiday at the moment and I just did a quick google search for schematics and found the following: Also, ICOM, Alinco and some Yaesu mobiles use the same type of interface and use a diode and resistor. For the sake of soldering 2 extremely extremely cheap components it just does not make sense why someone would not fit them and become defensive about it. Would you put the wrong oil in your engine and risk causing damage? but you would say "well it works", yes for the moment. |
Re: DIY Programming Cable
If you look to the FT-60 schematic you will see that on the data line there is a pullup resistor, R1168, 47 k, which goes to the 3 V bus (regulator Q1001.) So no need for an external resistor. I admit that I looked to the schematic after building the interface ;-) 73 Giovanni IZ5PQT Il giorno dom 27 ago 2023 alle ore 17:52 Dale Robins - 2W0ODS <dale.robins@...> ha scritto: The specification requires a pull up resistor and a diode end of discussion. To say it's not needed is careless and could damage someone's radio. There is simply no need to be ignorant and defensive. |
Re: DIY Programming Cable
Dale, which specification? Is there a specification? You are the only person in the world? who seems to know something about that cable, since my searches on the Internet were fruitless. OK, if you run a business manufacturing programming cables? I must trust you, but before send me a corrected copy of my schematic.? 73 Giovanni IZ5PQT Il giorno dom 27 ago 2023 alle ore 17:52 Dale Robins - 2W0ODS <dale.robins@...> ha scritto: The specification requires a pull up resistor and a diode end of discussion. To say it's not needed is careless and could damage someone's radio. There is simply no need to be ignorant and defensive. |
Re: DIY Programming Cable
The specification requires a pull up resistor and a diode end of discussion. To say it's not needed is careless and could damage someone's radio. There is simply no need to be ignorant and defensive.
I was typing my long winded reply outside in a hot tub. I work with 1000s of different models and do not know the radio pinout off the top of my head. Regardless of what line it uses the radio requires an external pull up resistor. I had to say something before others copy you and make the same mistake. What do I know, I only run a business that manufactures programming cables and interfaces, repair amatuer and professional radio equipment, amongst many other things. |
Re: DIY Programming Cable
Dale you wrote? ?There can't be a pull up resistor inside the radio as the same connector on the radio is used for audio input and output. So the pull up resistor is put inside the data interface/cable. This is not correct: the data are transmitted via the first ring in the MIC/SPK plug, and that contact has nothing to do with the audio I/O. It is completely dedicated to data transmission.? Moreover? the levels on the TX pin of the adapter are well determined without any pullup resistors (I measured them directly).? 73 Giovanni IZ5PQT Il giorno dom 27 ago 2023 alle ore 12:34 Dale Robins - 2W0ODS <dale.robins@...> ha scritto: The way it reads and writes is by pulling the TX and RX lines low, without the resistor the MCU is "Floating" it's neither high or low. There can't be a pull up resistor inside the radio as the same connector on the radio is used for audio input and output. So the pull up resistor is put inside the data interface/cable. |
Re: DIY Programming Cable
The way it reads and writes is by pulling the TX and RX lines low, without the resistor the MCU is "Floating" it's neither high or low. There can't be a pull up resistor inside the radio as the same connector on the radio is used for audio input and output. So the pull up resistor is put inside the data interface/cable.
If something is "Floating" it's very easy for a bit/byte to be interpreted incorrectly, there needs to be a large enough voltage swing to determine whether it is a 1 or 0. If even one of those 1/0 get interpreted incorrectly the whole bit/byte is wrong and if that gets written to the radio then the programming is corrupt and will either stop the radio working completely or cause strange behaviour with the operation of the radio. In both cases it might be impossible to re-programme the radio again to get it working properly and the EEPROM or MCU may need to be removed from the board and reprogrammed on an external programmer or even replaced. The calibration data for the radio is also stored in this location. The diode is used so the RX and TX lines do not influence each other when reading or writing. If they are just tied together, when you read from the radio the TX line on the USB to UART is getting pulled Low and when you write the RX line gets pulled Low with data. Some USB to UART chipsets don't like those lines tied together at all and will not work or crash. The CP2102 is one of those. But you think well I can tie RX/TX together to do a loopback test, yes you can but you are not pulling them both High or Low at the same time on an external device. Hopefully this helps and makes sense. |
Re: DIY Programming Cable
Thank you for the remark. However I found a diagram of the Yaesu programming cable and the RX and TX were simply tied together.? I thought that the somebody put the diode was there to protect the adaptor. Why the radio should be damaged if one bit fails?? I used the cable to write and read. 73 Giovanni IZ5PQT Il giorno dom 27 ago 2023 alle ore 11:48 Dale Robins - 2W0ODS <dale.robins@...> ha scritto: It may work for you, but you do risk bricking the radio if even one byte fails when writing to the radio. I was just being helpful by giving additional information on how it is done officially and to stop someone from potentially bricking their radio. |
Re: DIY Programming Cable
It may work for you, but you do risk bricking the radio if even one byte fails when writing to the radio. I was just being helpful by giving additional information on how it is done officially and to stop someone from potentially bricking their radio.
If you try to use it without a diode and resistor on a VX170 or FT70D and other Yaesu radios it wouldn't even work at all. |
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