About Attenuator
Attenuator is a utility for anyone working with radio frequency sources and needs to know power and voltage after attenuation. You can specify an input voltage (Vpp or Vrms) and dB of attenuation to get the output...
Attenuator is a utility for anyone working with radio frequency sources and needs to know power and voltage after attenuation. You can specify an input voltage (Vpp or Vrms) and dB of attenuation to get the output voltage, power and attenuation. The impedance can be specified, typically 50Ω for most systems. There is a new emphasis on NMR utility, with options for calculating pulses based on reference power and pulse length. Powers are in Watts, dBm, and dB values. Measure local magnetic field to check stray static fields from magnets. See the local barometric pressure, useful if the magnet boil-off is high
Version History Fixed error in barometer display. 5.11 01/05/2025 - Fixed barometer crashing - Fixed Vpp/Vrms display 5.1 01/04/2025 Thorough graphics refresh. 5.0 10/25/2022 This update from Apple will improve the functionality of this app. No new features are included. More digits displayed in power calculations Small bug fixes 3.1.1 02/12/2015 Added a barometer to show local pressure (for iPhone 6 and iPhone 6 Plus only) Cleaned up the interface mightily. What was I thinking before? Bug fixes: The reference section can be opened by tapping The value of p1 or tpwr is no longer set to 4096 Translation fixes 3.1 01/24/2015 Updated for iPhone 6 and iPhone 6 Plus. Updated localizations. New: EPR conversions 3.0 12/03/2014 Updated the pulse calculations to include Biopack tpwrf Added option to remove ads through in-app purchase. Displays the local magnetic field. 2.0 08/30/2013 For NMR spectroscopists, added pulse calculations: calculate pulses based on power, in Watts or dB). Entry of values automatically scaled by unix prefix. So 20 k is understood as 20000 and 20 m is 0.02. 1.5 09/01/2011 Input from all 7 fields: Enter in or out voltages, power of dBm and calculate the others based on attenuation. Keyboard slides up to see all values. iAds. Still compatible with iOS 3.1.3 and above. Tested on iOS 4.2 1.2 01/04/2011 Settings are now accessible in the application. Language improvements. iOS 4 multitasking supported. 1.1.1 07/16/2010 Now users can enter power in Watts or in dBm as well as in voltage. Minor bug fixes in languages. 1.1.0 07/01/2010 1.0.0 04/21/2010
Previous Versions
Here you can find the changelog of Attenuator since it was posted on our website on 2016-10-01 07:41:53.
The latest version is 5.11 and it was updated on 2026-06-29 12:21:50. See below the changes in each version.
Attenuator version 5.11
Updated At: 2026-06-29
Changes: Version History Fixed error in barometer display. 5.11 01/05/2025 - Fixed barometer crashing
- Fixed Vpp/Vrms display 5.1 01/04/2025 Thorough graphics refresh. 5.0 10/25/2022 This update from Apple will improve the functionality of this app. No new features are included.
More digits displayed in power calculations
Small bug fixes 3.1.1 02/12/2015 Added a barometer to show local pressure (for iPhone 6 and iPhone 6 Plus only)
Cleaned up the interface mightily. What was I thinking before?
Bug fixes:
The reference section can be opened by tapping
The value of p1 or tpwr is no longer set to 4096
Translation fixes 3.1 01/24/2015 Updated for iPhone 6 and iPhone 6 Plus.
Updated localizations.
New: EPR conversions 3.0 12/03/2014 Updated the pulse calculations to include Biopack tpwrf
Added option to remove ads through in-app purchase.
Displays the local magnetic field. 2.0 08/30/2013 For NMR spectroscopists, added pulse calculations: calculate pulses based on power, in Watts or dB).
Entry of values automatically scaled by unix prefix. So 20 k is understood as 20000 and 20 m is 0.02. 1.5 09/01/2011 Input from all 7 fields: Enter in or out voltages, power of dBm and calculate the others based on attenuation.
Keyboard slides up to see all values.
iAds.
Still compatible with iOS 3.1.3 and above.
Tested on iOS 4.2 1.2 01/04/2011 Settings are now accessible in the application. Language improvements. iOS 4 multitasking supported. 1.1.1 07/16/2010 Now users can enter power in Watts or in dBm as well as in voltage.
Minor bug fixes in languages. 1.1.0 07/01/2010 1.0.0 04/21/2010
Attenuator version 5.11
Updated At: 2025-01-05
Changes: Fixed error in barometer display.
Attenuator version 5.11
Updated At: 2025-01-05
Changes: Jan 5, 2025
Version 5.11
Fixed error in barometer display.
Attenuator version 5.0
Updated At: 2022-10-25
Changes: Oct 25, 2022
Version 5.0
Thorough graphics refresh.
Attenuator version 3.1.1
Updated At: 2015-02-12
Changes: Feb 12, 2015 Version 3.1.1
This app has been updated by Apple to display the Apple Watch app icon.
More digits displayed in power calculations
Small bug fixes
Attenuator version 3.1.1
Updated At: 2015-02-12
Changes: Feb 12, 2015 Version 3.1.1
This app has been updated by Apple to use the latest Apple signing certificate.
More digits displayed in power calculations
Small bug fixes
Attenuator version 3.1.1
Updated At: 2015-02-12
Changes: Feb 12, 2015 Version 3.1.1
More digits displayed in power calculations
Small bug fixes
Attenuator version 3.1.1
Updated At: 2015-02-12
Changes: 12 feb 2015 Version 3.1.1
More digits displayed in power calculations
Small bug fixes
Attenuator version 3.1.1
Updated At: 2015-02-12
Changes: 12 Feb 2015 Version 3.1.1
This app has been updated by Apple to use the latest Apple signing certificate.
More digits displayed in power calculations
Small bug fixes
Attenuator version 3.1.1
Updated At: 2010-04-22
Disclaimer
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