![]() Demodulate and play AM and FM signals received by an RTL-SDR or Airspy HF+ radio. Requires a radio and a host computer which are not provided with the application. ![]() SDR Receiver is a Software Defined Radio (SDR) for iOS that processes, demodulates and plays AM, narrowband FM and wideband FM signals. Listen to communications from aircraft (AM), amateur repeaters and VHF handhelds, police and fire, NOAA weather reports (narrowband FM) and commercial broadcasts (wideband FM). • Easily entered and managed lists of stations to simplify station selection and switching. • Adjustable squelch that works for both AM and FM signals. • Adjustable LNA gain (for RTL-SDR radios). • Adjustable audio high pass and low pass filters. • Signal strength indicator that shows power level in the signal passband. Sep 16, 2016 - A good friend of mine recently bought an RTL-SDR (Version 3) from Amazon. Developed an easier way to run the RTL-SDR on a Mac, but I'm not sure if. That still sell shortwave radios, the Amazon Services LLC Associates. Jan 21, 2013 - Mac users may have felt a little left out of the RTL2832U SDR revolution since there has not been a. 9) Click on START to activate the receiver. • Multiple sampling rates from 240 ksps to 1,920 ksps (for RTL-SDR radios) to accommodate different network bandwidths. SDR Receiver processes signals that are streamed over the network from a host computer (Mac, PC or Raspberry Pi) that is attached by USB bus to an RTL-SDR or Airspy HF+ radio. An rtl_tcp server utility or equivalent application running on the host computer receives baseband IQ data from the radio and streams the sampled signals over the network to the iOS device running SDR Receiver. Requires an RTL-SDR or Airspy HF+ radio and a host computer which are not provided with the application. New: • Highlights a selected entry on the Stations tab with a light blue background. • The Preset section of the Lists tab can now be collapsed by tapping the Preset section header, and it can then be expanded by tapping again. • Adds a Port option on the Settings tab where a Port number can be entered. The default Port is 1234. • Adds a Tuning option on the Settings tab for selecting a tuning step size. The set of possible step sizes and the saved step size are specific to each modulation type. • Adds a Support option on the Settings tab. An email requesting support can now be composed and sent directly from within the app. • Adds a Twitter option on the Settings tab which displays the @SDRReceiver Twitter page. Improved: • Expanded Help documentation with: instructions for installing rtl_tcp on Windows; steps for building and installing hfp_tcp for Airspy HF+ on Raspberry Pi and macOS; procedure for building the Airspy HF+ Library on macOS. • Reduces latency when changing sampling rate and when changing audio filter frequencies. An audio filter frequency change takes effect immediately when a new frequency is selected. • Calculates the signal strength estimate (which is displayed on the signal strength bar and used by the energy squelch) so that it is independent of the LNA Gain setting. As a result, a change in the LNA Gain setting will no longer change the AM squelch threshold or the displayed signal strength. Free app for mac. • Saves the highlighted station on the Stations tab and the state of the Preset lists (collapsed or expanded). These states are restored when the app is restarted. • Saves the Volume control, AGC/Man control and LNA Gain values. These values are restored when the app is restarted. • A long press on the frequency up/down buttons will now change the frequency repeatedly by the selected tuning step size. • When the tuning step size is set to Default, the default value is shown on the right side of the segmented control. • Audio filter frequency choices and saved values are now associated with a particular modulation type. When Default is selected, the default value will be displayed on the right side of the segmented control. • Sets the signal strength bar to the minimum value when streaming is switched to Off. • Checks Host and Port entry fields for validity as characters are entered. The Save option is enabled only when the entry is valid. • Improves the layout of section headers so that they have the same appearance and text style on all three tabs and take up significantly less vertical space on the Settings tab.
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