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Most of the time, Macs don't make much noise. Then at times, out of nowhere, your Mac fan can become noisy pretty quickly, which can soon get annoying, especially if there’s no obvious reason. So why is your MacBook fan so loud all of a sudden?
Why is your Mac fan so loud?
- Note: A number of ham radio dealers sell the RT System's software and alongside the radios. This gives the false impression that the software and cable are from Yaesu rather than a 3rd party which is a bit misleading. Some RT System's cables such will NOT work with CHiRP under Windows or Mac OS without some additional driver or chip configuration.
- 8/10 (8 votes) - Download smcFanControl Mac Free. With smcFanControl you can configure yourself the speed of your Mac's refrigeration. It's easy to use but you've got take certain precautions beforehand. On any computer, and Mac's aren't an exception, you can't control how its fans work as they.
Your Mac fan may kickstart when you’re running intensive tasks or resource-heavy apps that make your Mac overheat. With MacBooks in particular, fan noise can sound as though your Mac wants to take off. By the way, in case of overheating, your Mac usually slows down.
If your fan has been louder than usual, there are some safe ways to reduce fan noise and cool down your Mac, which we’ll cover in this article.
Popular solutions to Mac fan noise
For over a decade, the App Store has proved to be a safe and trusted place to discover and download apps. But the App Store is more than just a storefront — it’s an innovative destination focused on bringing you amazing experiences. Among the features of primary interest to us are plant growth, primary productivity, patterns of biomass distribution, regeneration, and species diversity and distribution. Many of our field studies have been and continue to be in tropical locations, e.g., Venezuela, Puerto Rico.
There are several solutions for a loud Mac cooling fan, and you should be able to get it under control fairly soon.
1. Improve air circulation
Sometimes we’re all tempted to use our Macs in bed. But, it’s important to remember that duvets and soft pillows can affect your Mac fan behavior. Any soft surface you put your Mac on can cover the air vents on your machine, making the fan run faster and louder.
So the quickest solution is to place your Mac on a flat surface, give the fan more air to work with. Unless you need to keep working — which isn’t advisable as a Mac that overheats too much could switch off, to preserve hardware and data - give the Mac a few minutes to cool down.
For a more long-term fix, there are countless Mac holders and laptop stands for bed you can buy; they elevate a Mac off the surface and provide a better view angle, which helps improve your posture, solving several problems at once.
2. Free up memory and processing power
Another solution, also a useful short and long-term fix, is finding out what uses so much processing power. It can be an app or process that runs in the background and drains your CPU.
To find out what is taking up processing power, the first place to look is Activity Monitor.
- Open Activity Monitor (Applications > Utilities).
- In the CPU tab, you will see the list of all active tasks and apps. The most resource-heavy will be at the top.
- Click the task and press the “X” sign in the top left corner to quit the processes.
Disable heavy memory consumers
There’s a quicker and easier way to identify heavy-consuming apps and processes and quit them. CleanMyMac X has a feature that detects those intensive tasks as you use your Mac and helps you shut them down. The app is notarized by Apple and has a free version to try it out.
- Download a free version of CleanMyMac X.
- After you install and launch the app, go to Optimization.
- Click “View All Items” and then select Heavy Consumers.
CleanMyMac X will identify the apps that heavily drain your CPU and thus overburden the fan. Check the box next to the app name and press Quit. That’s all!
3. Test your cooling fans
If your Mac has been continuously exposed to heat, its cooling devices may become unstable. Overheating may not only damage the fan, but your whole machine: your Mac may shut down unexpectedly when the thermals fail to cool the laptop.
Yoho mac os. If your Mac has been overheating, and you’re worried whether the fan is not damaged, one thing you could do is to run Apple Diagnostics.
How to run Apple Diagnostics (Apple Hardware Test)
To run Apple Diagnostics on your Mac, open this instruction on any other device, and get started:
- Disconnect all external devices except keyboard, speakers, mouse, display.
- Go to the Apple menu and choose Restart.
- Press and hold the D key as your Mac reboots. Keep holding it down until you see the list of languages appear.
- Select your language. Apple Diagnostics will run automatically.
When it's finished, you will see the list of problems it has diagnosed.
4. Reset SMC settings
SMC stands for System Management Controller. This is a driver responsible for your Mac's hardware, including fans, processor, and motherboard. So one potential solution to loud fan noise is to reset SMC settings:
For Mac’s with non-removable batteries (which is the majority in use now):
- Unplug the power cord.
- Go to the Apple menu > Shut Down.
- Once it has shut down, press Shift-Control-Option on the left side of the keyboard.
- Now press the power button and keep all four buttons pressed for 10 seconds.
- Release all of the keys and press the power button to switch on again.
For newer Macs with anApple T2 Security Chip (2018 and later Macs), the process is slightly different:
- Shut down your computer.
- Press and hold Control-Option-Shift for 7 seconds.
- Then press the power button and hold all four keys for another 7 seconds. You may turn on and off during the process.
- Release the keys, wait a few seconds, and turn on your Mac.
5. Free up space on your Mac
Free hard drive space is like fuel for your processor. When your drive is cluttered, the processor reaches its peak capacity and begins asking for some fresh air. The least-invasive method to fix a roaring fan is to delete junk on your startup drive. You'll be surprised how much space you can free up without deleting any important data.
A free edition of CleanMyMac cleaner could be helpful in this case.
It removes system junk, outdated cache files, broken downloads. In my case, I could find 13.97 GB worth of useless files.
It removes system junk, outdated cache files, broken downloads. In my case, I could find 13.97 GB worth of useless files.
After giving your Mac some brief rest and preventing heavy or unnecessary apps from running when they aren't needed, your computer should cool down and start operating normally. If those solutions still haven't solved the problem, then it could be a hardware malfunction. It is then worth taking the Mac to a certified Apple repair shop.
- Guide to programming cables
- Cable Buying Advice
- Radio Specific Information
- Baofeng
- Icom Radios
- Kenwood Radios
- Yaesu Radios
This page is a collection of user submitted information on radio programming cables. If you have corrections or additions to this page, please submit them to me, or ask for edit privileges. I much prefer this information to be user-maintained and contributed! Note: as this is user-submitted content, the recommendations and opinions here are not necessarily shared by Dan and other primary CHiRP contributors.
Cable Buying Advice¶
In some cases, the manufacturer of your radio produces the highest quality cable for programming. However, these are usually the most expensive and are not always the most convenient (because of a lack of USB, etc). The exception to this are the very low cost USB cables that come with many Chinese radios that use a counterfeit Prolific USB to serial chip that has a number of driver problems with recent versions of Microsoft Windows. These cables generally work ok with Linux.
Third party cables are available for most radios with a range of costs and quality. The low cost cables use counterfeit Prolific USB chips. If you use Microsoft Windows, finding the right driver and keeping it working can be quite a chore. Saving $10-15 on a cable might cost you a good bit of time and frustration trying to get it all to work.
Cables that use only a 9-pin serial connection take a lot of guesswork out of the equation. With such a cable, you can choose your own (or try many) USB adapters to get a working setup. In reality, this is a much safer option as you only have to find a solid USB adapter once, and you can use it with many cables. The KeySpan USA-19HS is a very solid USB adapter that has many benefits and is not sold under another name, nor does it use a variety of chips as do many other cables. Anything with a REAL Prolific or FTDI chip should be fine as well.
How to figure out which cable to buy¶
Recommendations for purchasing a USB radio programming cable:
- Avoid USB programming cables that appear to be based on the Prolific PL-2303 USB chip. This is the chip that has been cloned/counterfeited in the Chinese cables. The early clones were fairly unreliable. Because of the counterfeiting, Prolific has taken the step of making their newest drivers attempt to detect the counterfeit chips and refuse to work with them. Recent versions of Microsoft Windows (7 and later) will automatically update to the latest Prolific driver. This can make a cable stop working at some point after it is installed. <br /> Look at the driver instructions for references to PL-2303. Also another clue is that there will be many different drivers listed to try if one doesn't work.
- Cables based on the FTDI USB chip are recommended. FTDI makes a high quality USB to serial chip that has a good, working driver built in to many operating systems. The FTDI chip can add $10-15 to the cost of a USB programming cable, but will save time and frustration with driver issues. Look for cables that specifically mention FTDI. Another clue is that the cables are advertised to work with Windows 7 64-bit. Some of the 3rd party cable manufacturers, such as BlueMax49ers and Valley Enterprises, have switched to using only the FTDI chip after having too many problems with the Prolific clones.
- RT Systems cables are not recommended for use with CHiRP. While RT Systems sells high quality USB programming cables that are based on the FTDI chip, these cables may or may not work with CHiRP and any other software that except the cable to show up as a generic serial (COM) port. The RT Systems cables use a custom ID. With some work it is possible to get the RT Systems cable to show up as a generic serial devices, see FTDI OEM Cables.
- Note: For some radios such as Yaesu, the RT Systems cable and software are sold alongside the radio as if they were made by the manufacturer rather than a 3rd party. A number of ham radio dealers don't make it easy to distinguish that the software and cable are actually from a 3rd party.
- If you can't tell what chip the cable uses, look for a different cable.
There are a few reputable manufacturers of 3rd party cables that are known to be high-quality in the community. If you're looking for a cable, check the following:
- BlueMax49ers is a good source of quality cables, and the owner Mark is a regular supporter of CHIRP. Check out his Software Advisor tool which helps you select software and cables for your radio, operating system, etc.
Making your own cables¶
It is possible to build your own radio programming cable. Most radios use a serial interface for programming, however the voltage levels used varies. RS-232 Serial ports used voltage variations of up to -15Vdc to +15Vdc which was good for older equipment and long cable runs. Modern low voltage electronics tends to use signalling levels of 0-5Vdc, or 0-3.3Vdc. Be sure you know what voltage levels your radio expects before connecting anything. RS-232 voltage levels can damage your radio if it is expecting to see a max of 3.3Vdc or 5Vdc. Older radios with built-in TNCs or those otherwise designed to connect directly to a computer use RS-232 voltages. However these radios are becoming more and more rare. Most modern radios have a low voltage port connected directly to the radio's microcontroller for cloning and memory programming. Research 'voltage level converters' for how to convert between the different types of signalling.
USB Serial cables that provide RS-232 ports usually include both a USB to low-voltage serial chip and a level converter. However, bare USB to serial adapters are available that provide 0-5Vdc or 0-3.3Vdc signalling from a number of companies targeted at microcontroller programmming and other do-it-yourself hobby/electronics activities. Building a USB programming cable for your radio can be as easy as selecting the appropriate USB adapter with the right voltage for your radio and soldering on the proper cable.
There is quite a bit of information available on building cables for most radios on the internet. Instructions with schematics can often be found in the mailing lists, Yahoo, Google (or other) Group, forums that are specifically for the users of each radio. Some of the plans have been linked below in the radio specific section.
Caveats¶
When using some touch screen laptops (for example the HP 430 series), you may not be able to use the USB cable to program the radio consistently. This is because the power management system in this line of laptops turns off USB devices when it does not detect data flow. Unfortunately, radio programming does not flow a lot of data, so the system shuts down the port thinking it's not being used. It does not 'wake up' again properly.
Solution:
Plug in your USB Programming cable. Go to 'Device Manager' and find your way to the 'Ports' item, then the '<Vendor> USB-to-Serial Comm Port (COM n)' (where <Vendor> is 'Prolific', 'FTDI', ..; and n is the COM port the system assigned to this USB to Serial adapter). Double-click on the '<Vendor> ..' item, then on the Power Management tab, remove the checkmark from 'Allow Computer to turn off this device to save power'. That solves the problem - now Chirp can always communicate with the radio.
Plug in your USB Programming cable. Go to 'Device Manager' and find your way to the 'Ports' item, then the '<Vendor> USB-to-Serial Comm Port (COM n)' (where <Vendor> is 'Prolific', 'FTDI', ..; and n is the COM port the system assigned to this USB to Serial adapter). Double-click on the '<Vendor> ..' item, then on the Power Management tab, remove the checkmark from 'Allow Computer to turn off this device to save power'. That solves the problem - now Chirp can always communicate with the radio.
Alinco Radios¶
All (to my knowledge) Alinco radios use a three-pin 1/8' plug with a TTL converter in the 9-pin housing. This is identical to the Icom OPC-478 cable.
Baofeng¶
UV-3R¶
The UV-3R uses a Prolific USB-to-serial chip, but users report that in Windows, you must use drivers from http://409shop.com. It works out of the box on Linux.
The PLUS model of the UV-3R uses a Kenwood/Wouxun cable (same as the UV-5R) instead of the original single plug cable used by the UV-3R and UV-3R Mark II. All models (thus far) of the UV-3R use the same software.
Build your own cable: The PLUS model of the UV-3R uses a Kenwood/Wouxun cable (same as the UV-5R) instead of the original single plug cable used by the UV-3R and UV-3R Mark II. All models (thus far) of the UV-3R use the same software.
UV-4X¶
The UV-4X is a rebadged UV-3R Mark II and uses the single connector cable. The radios themselves are made by Vero Telecom
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UV-5R¶
The UV-5R is made by TYT, uses a Kenwood/Wouxun cable, and does not use the same protocol as the UV-3R models.
Build your own cable: Icom Radios¶
The following links are outdated, and we haven't yet found replacements for them; the Highfieldfs Amateur Radio Club in Cardiff UK is now at http://highfields-arc.com, but apparently their cable pages are gone.
Instructions for building your own OPC-478 / OPC-552 / CI-V cables can be found here: http://highfields-arc.co.uk/constructors/other/opc478.htm Circuits are shown for both an RS-232 version with a level-converter as well as a USB version using an inexpensive USB module.
Instructions for building your own OPC-478 / OPC-552 / CI-V cables can be found here: http://highfields-arc.co.uk/constructors/other/opc478.htm Circuits are shown for both an RS-232 version with a level-converter as well as a USB version using an inexpensive USB module.
VHF/UHF Mobiles¶
Nearly all of these radios use an OPC-478 (or similar) cable, which plugs into the speaker jack of the radio. The housing of the 9-pin connector has TTL conversion logic, which can be home-built but it is typically easier to buy one pre-made. Note that some of the mobile D-STAR radios can also use their data connection for programming, which uses RS-232 signalling and requires no conversion hardware. Models that can do this include the IC-2820H, ID-880H, and ID-80.
IC-91AD, IC-92AD, ID-1¶
These radios operate in 'live' mode and require a full-duplex RS-232 serial cable connection. For the IC-91AD, the OPC-1529 cable is used (and can be easily built).
The 92AD uses a moisture-proof custom bayonet connection at the top of the radio, which is only available from Icom (OPC-1799) and only with their RS-92 programming software. Note that the OPC-1797 adapter cable will not allow you to use an OPC-478 programming cable with this radio.
The ID-1 is programmed via its integrated USB connection.
IC-Q7A¶
For some reason, this radio doesn't use the standard three-conductor plug on the OPC-478. The cable for the Yaesu VX-7 actually works perfectly though.
Kenwood Radios¶
TH-F6A, TH-K2A¶
These radios use a two-pronged cable that plugs into the microphone and speaker jacks simultaneously. Note: many Chinese radios such as the Wouxun, and Baofeng UV-5R use the same two prong cable as these Kenwoods.
Build your own cables: - Miklor Site's Baofeng DIY (The UV-5R cable will work for these Kenwood)
TH-D7, TH-D7A, TH-D7Ag¶
These radios use a three-pin 3/32' plug directly wired to an RS-232 port (easily home-built).
TM-D700¶
This radio uses a regular serial cable (Female-Female) to the 9-pin connector on the front of the radio.
TM-D710, TM-V71A¶
This radio uses a RS-232 cable (officially, PG-5G) directly cabled to a eight-pin Mini-DIN connector marked 'PC' on the back of the radio. No level converter is required, so this can be easily home-made with the right connectors.
Yaesu Radios¶
Note: A number of ham radio dealers sell the RT System's software and alongside the radios. This gives the false impression that the software and cable are from Yaesu rather than a 3rd party which is a bit misleading. Some RT System's cables such will NOT work with CHiRP under Windows or Mac OS without some additional driver or chip configuration. See FTDI OEM Cables. Therefore, RT System's cables aren't recommend for use with CHiRP.
VX-2R, VX-3R, VX-5R, VX-6R, VX-7R, FT-60R¶
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These handhelds use the same type of cable, which is a four-pin TRRS connector and a TTL voltage converter in the 9-pin housing.
VX-8R, VX-8DR¶
The VX-8R and VX-8DR both use a moisture-proof multi-pin screw-on connector at the top of the housing. It is recommended that you find a third-party programming cable for this radio. This radio expects 3.3Vdc signalling. Using a 5Vdc adapter could possibly damage the radio. Note the VX-8G radio with the built-in GPS, uses an entirely different serial connection, see below
NOTE: RT System's cable will NOT work with CHiRP under Windows or Mac OS without some additional driver or chip configuration. See FTDI OEM Cables.
Build your own: - VK4GOL's instructions. Uses FTDI modules to build a serial cable.
- VX-8 Connectors: RT Systems sells a DIY cable with the correct proprietary end for the VX-8 without the USB serial adapter for a very reasonable price. Note: it is not waterproof or moisture resistant, like
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VX-8GR¶
The VX-8GR uses a three-conductor 3/32' plug directly to an RS-232 port. This is the same cable that Kenwood APRS radios use for the GPS connection, and almost the same as the Icom OPC-1529 type data cable, except that a null modem adapter must be used to switch the TX and RX pins.
FT-7800, FT-7900, FT-8800, FT-8900¶
These radios use a 6-pin mini-DIN plug and a TTL converter in the 9-pin housing.
FT-4, FT-65¶
These radios use the Yaesu SCU-35 cable. It is a USB-to-serial cable with a Prolific PL2303 USB-to-serial ship. It is supported by the unmodified drivers USB in Windows and Linux. The cable uses 3.3 V voltage levels and is a two-wire cable, with GND on one wire and TxD and RxD wired together on the other wire. It plugs into the radio's 'MIC' jack using a 2.5mm TRS plug.
Wouxun Radios¶
The KG-UVD1P and KG-UV2D, KG-UV3D, KG-UV6D radios use the same cable as the Kenwood TH-F6A and TH-K2A listed above. The connection consists of a 3.5 mm and a 2.5 mm 3-conductor phone plug (TRS). It is a 5 Volt (TTL) serial interface, with Ground and TXD (fKrom Radio) on the sleeve and ring of the 2.5mm connector. RXD (to radio)is on the sleeve of the 3.5 mm plug.
Build your own: - Miklor Site's Baofeng DIY (The Wouxun uses the same cable as the Baofeng UV-5R)