Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Signal GH Screenshots

iPad

iPhone

About Signal GH

Signal GH is a tool for users of the HDHomerun networked digital TV tuner who want to monitor and improve their Over The Air (OTA) reception quality. It graphs signal quality from multiple channels simultaneously, allowing a user to more rapidly adjust and upgrade OTA receiving hardware, i.e., cables, connections, splitters, pre-amps, and antennas.

Snapshot the state of your system using the Experiments tab to keep track of what worked and what didn't work.

United States users also have the benefit of a map of digital television broadcasting towers. Depends on the accuracy of your device's compass.

If you don't have an HDHomerun, you don't need this product. If you do have an HDHomerun, and use it for over the air reception, you will likely find it useful.

If the automatic scan does not find a station you expect, tap on the station's real digital channel in the unused channel column under Settings.

Signal GH does not support QAM (digital cable) Please make sure your HDHomerun is set to use a broadcasting channel set and not a cable channel set.

You cannot use this software to watch video on your iOS device. This is a diagnostic tool.

What's New in the Latest Version 3.0.4

Last updated on Nov 27, 2023

Old Versions

• Updated map to include ATSC 3 broadcasters
• Showing only tuners 0 and 1 as ATSC 3 capable, where applicable.
• Layout changes in the settings and experiments tab

Version History

3.0.4

Nov 27, 2023

• Updated map to include ATSC 3 broadcasters
• Showing only tuners 0 and 1 as ATSC 3 capable, where applicable.
• Layout changes in the settings and experiments tab

3.0.3

Mar 20, 2023

* Report of app crashing on some devices. Attempting to minimize that crash.

3.0.2

Sep 21, 2022

• Channel selection menu had been flickering on iOS 16
• Updated broadcaster database

3.0.1

Aug 6, 2022

• Improvements when NextGenTV (ATSC 3) stations are scanned including not showing 00 on channel button
• Tidied up interface
• Plex systems apparently do not tune exactly to the assigned frequency for a digital channel (Don't know what they are thinking over there), now accept these frequencies as being the closest digital channel
• Put vertical color legend bar next to graph
• Various layout improvements including improved behavior at larger type sizes
• Made the circle graphs larger
• Because several people told me that the channel button at the bottom wasn't obvious enough, appended a menu icon to let folks know its function.
• The refresh tuner list button had been disabled when there were zero tuners.
• Newer HDHomeruns provide a decibel reading for signal strength and quality, displaying that in the tuner detail view.
• Show an alert when attempting to tune to an ATSC 3 channel from the non-ATSC 3 supporting tuners of an HDHomerun 4K
• Try to avoid using the non-ATSC 3 supporting tuners on an HDHomerun 4K during experiments or initial scans

3.0

Jun 4, 2022

• New UI for the Signal Tab
• New Experiments Tab
• New Onboarding experience
• Updated Map Tab UI
• New Settings UI
• New Documentation Tab
• Experimental support for ATSC 3
• New icon

2.3.6

May 30, 2021

• Updated for discovering HDHomeRuns on local networks

2.3.5

Mar 15, 2021

• Returned contours for US TV broadcasting towers on the map
• It had been possible to get stuck when reading the no location explanation
• Tidied up the UI colors

2.3.4

Jan 4, 2021

• Fixed crash where manual address of HDHomerun matched subsequent discovered address
• Better handle user denying local network access
• Location manager permission dialog had been disappearing before user could agree
• Better handling of case where user allows reduced location accuracy (disable compass in such cases) on map
• Added location issues button to map

2.3.3

Jun 26, 2020

• Fixed crash while running upcoming operating system
• Fixed font issue in the level gauges
• Updated towers database

2.3.2

Jan 10, 2020

• Fixing crash when onboarding under iOS 13 while manually choosing channels
• Fixing crash when onboarding with no tuners available for scanning
• Fixing crash when tuners become available while showing the bar charts on iOS 13.

2.3.1

Jan 7, 2020

• Bug fixes
• Minor UI adjustments.
• Made dynamic tables more reliable on iOS 13.
• Possibly fixed a rare crash when a station improperly specified a sub channel name.
• Updated towers database

2.3

Oct 13, 2019

• Support for light and dark themes
• Support for Dynamic Type
• Fixed longstanding issue where channels wouldn't be remembered across restoration from backup
• Variety of fixes related to the FCC channel repack.

2.2.3

Apr 12, 2019

• Added reminders of ongoing repack of broadcast channels in the USA.
• Tapping on the tower detail view was not opening it as expected.
• Updated map database.
• Cleaned up table layouts.
• Sped up rate of checking the device status.

2.2.2

Mar 13, 2019

• Stability improvements
• Maps updated to try to keep up with ongoing FCC "repack" of allocated channels.
• Some map stations, especially translators will show the incorrect real channel as the repack settles down.

2.2.1

Jan 31, 2019

• Updated towers database
• Tweaked appearance on devices without home buttons.

2.2

Oct 21, 2018

• Updated towers map to a more modern UI.
• Fixed a variety of defects.
• Updated the towers database.

2.1.8

Jan 31, 2018

* Updated U.S. transmission tower database.

2.1.7

Sep 23, 2017

• Updated HDHomerun library
• Allow for slide to delete manually entered tuners
• Updated TV database

2.1.6

Jul 5, 2017

•Added refresh tuners button to the main interface
• Updated the towers database
• Changed the layout of the tower detail panel

2.1.5

Oct 26, 2016

• Cleaned up several glitches in the UI.
• Manual selecting of channels wasn't working in settings.
• Status bar wasn't visible after on boarding.
• Rescan nng channels was not picking up new channels

2.1.4

Sep 15, 2016

* Scanning for tuners was unacceptably slow, scanning for channels was abominably slow. My apologies for the bug.

2.1.3

Sep 13, 2016

* iPad had been crashing when no tuners were available
* Updated on boarding screen

2.1.2

Feb 18, 2016

• Trying to change the channel for a locked tuner would crash on the iPad.

2.1.1

Feb 12, 2016

• The manual IP address entry view had several serious issues during onboarding.
• The app could crash if the onboarding scan button was pressed when there were no selected tuners.

2.1

Feb 8, 2016

I've been hard at work improving my TV apps and Signal GH is the first out of the gate with a cleaner look and a more accurate database of US digital TV antennas.

• Newly generated antenna database.
• Cleaner non-major antenna pins
• New bar graph graphic design.
• Better use of space in phone landscape mode.
• Show target devices name instead of IP address.
• New graphics.

Feedback Report

Signal GH FAQ

What country or region is Signal GH available in?

Signal GH is available in regions other than the following restricted countries:

Cyprus,Dominican Republic,Nicaragua,Norway,Russia,Chile,Colombia,Benin,Botswana,France,New Zealand,Anguilla,Australia,Nauru,Oman,Chad,Zimbabwe,Montenegro,Mauritius,Turkey,Guinea-bissau,Italy,Myanmar,Niger,Peru,Argentina,Sri Lanka,Sweden,Afghanistan,Romania,South Korea,Rwanda,Sao Tome & Principe,Ecuador,Iraq,Saudi Arabia,Slovenia,El Salvador,Hong Kong,Macao,Belarus,Grenada,Georgia,Latvia,Mongolia,Nigeria,Antigua And Barbuda,Bolivia,Uganda,Uzbekistan,Kuwait,Lithuania,Malawi,Philippines,Azerbaijan,Germany,Cayman Islands,Serbia,Tajikistan,Albania,Kenya,Lebanon,Nepal,Portugal,Senegal,Cote Divoire,Cameroon,Iceland,Yemen,Austria,Bosnia & Herzegovina,Jamaica,Turks and Caicos,St. Vincent & The Grenadines,British Virgin Islands,Czech Republic,Indonesia,Armenia,Ukraine,United Arab Emirates,Kyrgyzstan,Guyana,Ghana,St. Kitts and Nevis,Montserrat,Namibia,Papua New Guinea,Brunei Darussalam,Brazil,Libya,Pakistan,Thailand,Venezuela,Greece,Guatemala,Honduras,Ireland,Luxembourg,Bermuda,Gabon,Lao Peoples Democratic Republic,Madagascar,Mozambique,Panama,Paraguay,Gambia,Hungary,Qatar,Slovakia,Taiwan,Barbados,Congo,Dominica,Cambodia,South Africa,Zambia,Bulgaria,Bahrain,Burkina Faso,Spain,Croatia,India,Solomon Islands,Turkmenistan,Angola,Denmark,Moldova,Singapore,Kosovo,Micronesia,Kazakhstan,Algeria,Jordan,St. Lucia,Liberia,Malaysia,Netherlands,China,Costa Rica,Palau,Sierra Leone,Congo, Democratic Republic,Japan,Morocco,Malta,Poland,Seychelles,Belgium,Swaziland,Mauritania,Trinidad and Tobago,Bahamas,Cape Verde,Macedonia,Mali,Maldives,Suriname,Uruguay,Finland,Fiji,United Kingdom,Tunisia,Tanzania,Bhutan,Switzerland,Egypt,Israel,Tonga,Vietnam,Vanuatu,Belize,Estonia