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Listen to songs and albums by Radioshark, including 'Rock Solid,' 'Larryville,' 'Can't Stand Talking to You,' and many more. Songs by Radioshark start at $0.99. You can even stream audio from audio devices such as RadioSHARK, XM and Sirius around your home. Stream any audio from your Mac to your entire network. Send wireless music services like Spotify or web-based audio like Pandora to all devices like Apple TV, Google Chromecast and Bluetooth speakers. On the Mac, the radio SHARK software can record using AAC or AIFF file formats.The radioSHARK software includes a background application called radioSHARK Server that must remain active to keep track of scheduled events. Unfortunately, when the radioSHARK Server application is active, the computer will not be able to go into sleep mode on its own.
radioSH (say it 'radio shell')is a Mac OS X command-line controller for the venerable USB-basedGriffinradioSHARK, allowing you to programmatically control its two LEDnotifiers and tune to arbitrary FM and AM radio stations from scripts andyour shell (hence radio shell like 'C-shell,' 'Bourne again shell,' etc.,get it?).
Sure, you could just run the Griffin radioSHARK software (which is evenAppleScript-able, at least version 2), but it's officially limited to10.6 and earlier, and muchless convenient for behind-the-scenes or headless setups; radioSHadeptly covers both those use cases. Roll your own cron orbackground daemons for recording or automatic jobs, or use a radioSHARK toreceive your local low-power transmitter as an easy way to synchronize audiobetween multiple sources. Or just twiddle the LEDs and use it as a statusdevice or trouble beacon. Whatever tunes your coil, man.
radioSHhappily runs on any Mac, PowerPC or Intel, from 10.4 Tiger to 10.15 Catalinauntil Apple stops letting people run programs they build themselves on macOS.It is offered as both a 32-bit Universal binary (PowerPC/Intel i386)and a 64-bit x86_64 binary, with source codeavailable. Both the white version 1 RadioSHARKand the black version 2 radioSHARK are supported. Because it is an unsigned executable, 10.7+ users may need to temporarily adjust theirGatekeeper settings.It has not been tested on the ARM Developer system or on the 11.0 beta.
Basic usage summary:The radioSHARK is a somewhat complex device under the
hood fin.It exposes the LEDand radio tuner functionality as a HID (on its third interface, #2) andsends the audio either analogue through a 3.5mm stereo headphone jack ordigitally via USB audio (on the other two interfaces). Your headphones canact as an antenna and audio output can go to both endpoints simultaneously.
To use radioSH, just have your radioSHARK plugged in and then passit the appropriate options (such as radiosh -a640 to tune the radioto 640kHz AM, or radiosh -f99.9 to tune to 99.9MHz FM). For tipson improving radio reception, see below.
The executable automatically detects if you have a v1 (white) or v2 (black)device; to see which one it detected, add the -v option. Options youdon't set are left undisturbed, or you can set multiple options at once(see below for LEDs), though if you specify both AM and FM tuning only thelast option is used. Specifying an option multiple times just replaces theoption with the next one. To turn the radio off, tune either AM or FM to '0'.
Once the radio is tuned, any utility that can playthru USB audio will play thestream on your Mac. No third-party driver is required.QuickTime Player can do this with a New Audio Recording,using the radioSHARK as the source, or you can use a tool likeLineIn (free, PowerPC compatible)orSoundSource (not free,not PowerPC compatible),or, if you prefer something open source, the Audio Monitor app in theMTCoreAudioframework package. (Here is someexample source code using MTCoreAudio.)Or just hook it up to some speakers or headphones, oryour Mac's line input.
If you have multiple radioSHARKs connected (!), the system's behaviour isundefined. The first one the Mac detects is used; if you have both v1 andv2 devices connected, the v1 devices take precedence.
Notes on the LEDs
One of the radioSHARK's most interesting features are its programmable LEDs.These were intended to show the state of the software recorder, but you can useradioSH to make them into a handy annunciator for any sort of purpose.
There are two LED banks in both v1 and v2 devices, a blue set (the one thatappears when you first plug it in) and a red set. The blue set originallyindicated the software was passively listening and the red set indicatedthat the software was recording audio. Both can be turned on atthe same time to yield a third 'magenta' colour.
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The blue LED's brightness (-b) isadjustable between 0 and 127, with -b0 being offand -b127being brightest. On v1 devices, you can also set an automatic pulse rate(-p) with 1 being the fastest, 127 being the slowest, and 0 disablingthe LED blinking. However, the LED pulse feature doesn't appear to besupported on v2 devices and you will receive an error if you try.
The red LED accepts brightness options (-r)between 0 and 127, but only 0 and 127 are defined(0 off, 127 on). The v1 treats any non-zero value as on, but the v2 treats anynon-127 value as off.
If both LEDs are on, the blue LED can be adjusted to yield any of 127 shadesof magenta by changing its brightness.
To turn both LEDs off, pass -b0 -r0 (any blink will also stop).
Tuning the radio seems to turn the red LED off automatically.
Notes on Radio Reception and v1 and v2 Differences
The v1 and v2 devices have almost completely different internals despiteexposing similar functionality. The biggest difference in the v2 is itssubstantially improved receptioncapability: the v1 radio receiver tends to pick up some carrier hum, which ismuch reduced in the v2, and the v2 does a better job with antennas (a whipantenna was included with the v2 package). On the other hand, the LEDs areweaker in the v2 and it apparently lacks the v1's LED pulse feature.
Both the v1 and v2 devices are rather worse at AM reception than FM reception,though the v1 is definitely inferior to the v2 particularly with distantstations. FM reception can be improved by lengthening and/or coiling the USBcable, and/or connecting headphones or a whip antenna with a 3.5mm plug,but AM reception can only be improved by repositioning or rotating the unit.
From a software perspective, the v2's different controller is immediatelyobvious. It takes HID commands of a different length and has different controlopcodes. They can be distinguished programmaticallyby either looking at the version (0x0001for v1, 0x0010 for v2), which is how radioSH determines the devicein use, or the USB product string, which is RadioSHARKfor the v1 and radioSHARK for the v2 (note the initial lowercase R).
Overall, the v2 is worth looking for if you care about audio quality; it isnoticeably better-sounding than the v1, even with AM reception, which isneither device's strong suit.Unfortunately, very few v2s were made. Allegedly there are some whiteradioSHARKs that have the v2 receiver, but of the three white units I own,they're all the v1 chipset.My personal house broadcaster uses a v2 radioSHARK as a repeater source,pictured at left. It sits in the attic with a really long USB cable to getan AM station about 80 miles away.
On the other hand, if you just want to use it as an inexpensive LEDannunciator device, the v1 is the device to grab because there's a lot moreof them.
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Download the binary (32-bit PowerPC/Intel, 8K, or64-bit Intel, 4K). Decompress it andchmod +x to make it executable. The binary is unsigned. The 64-bitversion may work on 10.13 and below, but is only officially supported on 10.14and later. The 32-bit version works on anything from 10.4 to 10.14.The 64-bit versionhas not been tested on the ARM Developer system or on the 11.0 beta.
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Download the source code (includes binaries,28K). To build the 64-bit macOS build requires a recent Xcode with Clang(type make radiosh64; thanks to Phillip Musumeci for testing).To build the 32-bit build (make radiosh32)requires Xcode 2.5 and Tiger 10.4,which is the only tested configuration (though Xcode 3 with the 10.4SDK should work); if you want to build on a later Xcode,you may need to modify the Makefile for those versionsthat cannot build for PowerPC.It is provided to you under a BSD license.
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As a bonus, the source code archive includes the tools on whichradioSH was based: rslight(Mac OS X), shark (Linux with libusb and libhid) andshark2 (ditto). These are merely included in the interest ofpreserving them for educational purposes. I don't support them and I don'teven guarantee they work or will build on a current OS.Cameron Kaiser