A simple apk (tested and written on vf696 android 5.1 'phone) that includes daytime shower calendar.
Version h6 (v3 signature, cert md5: 8741357d4dd11e5c4a3ca328594fc8b8) 18th January 2023
This program requires a fast Android at least 800px400 screen.
Above image shows a (very) rare Southern Hemisphere Temparate zone Sporadic E event coincident with a Daytime shower on 1st Feb 2021
This apk stopped working on Android 5 and Android 6 Some years ago with a 'SSL java Trust Anchor Error' FIXED:
By installing a (self signed) ISRG Root X1 , it can work again for DJ4PK cluster and wspr.
[With this program, the Android UI 'back' button is more reliable with Android 5 than Android 6, for Android 6, try the
UI 'back' button and then if no response use the onscreen < touch
This program for old Android 5 or 6,(minsdkVersion:'19', targetSdkVersion:'29', compileSdkVersion='23')
besides meteor calender also:
* Connects to cluster and plots 6m and 10m on circle map
* Plots satellite ground tracks and visibility
* Shows satellite RAAN changes
* Plots GPS (need root to set time)
* Plots wspr
* Mini orrey (out to Jupiter)
* Moon and Jupiter visibility
* Ra/Dec plots
* Shows sunrise/sunset on circle map
* calculates circle map (high definition) for location
* Plots helion and Sporadic sources
* shows sun and moon terminators
* can select map types and plot colours
* has Notes section to explain terms used
26/6/2025 Works fine with Android 7 (prevent program from being backgrounded ?), run the program twice;
first time type in grid locator for 'placename'
second time, download beacon list (to enable bearings menu), then calculate a cirle map...
More than just the X1 was required, so I installed a bunch of certificates, (the E5 being required).
bunch of certificates.zip
The CRC here apply to these ones only, since a different cross sign would produce a different certificate.
Only install certificates from a trusted source (from the Issuer; 'Let's Encrypt').
Installing arbitrary certificates can prevent settings>security from working on Android (6).
The metrcal54 apk will work for meteor only without updating the certificate, here is example screenshot of the Geminids
reliable night time shower for Northern latitudes (drag the lower edge block to change time):
Build Superregenerative converter
Build Balanced line tuner
Build 3rd Order loop filter
Build Mega16 Text Beacon keyer
Software dotnet 3.5
comparing speech codecs
Above image shows a (very) rare Southern Hemisphere Temparate zone Sporadic E event coincident with a Daytime shower on 1st Feb 2021
This apk stopped working on Android 5 and Android 6 Some years ago with a 'SSL java Trust Anchor Error' FIXED:
By installing a (self signed) ISRG Root X1 , it can work again for DJ4PK cluster and wspr.
[With this program, the Android UI 'back' button is more reliable with Android 5 than Android 6, for Android 6, try the
UI 'back' button and then if no response use the onscreen < touch
This program for old Android 5 or 6,(minsdkVersion:'19', targetSdkVersion:'29', compileSdkVersion='23')
besides meteor calender also:
* Connects to cluster and plots 6m and 10m on circle map
* Plots satellite ground tracks and visibility
* Shows satellite RAAN changes
* Plots GPS (need root to set time)
* Plots wspr
* Mini orrey (out to Jupiter)
* Moon and Jupiter visibility
* Ra/Dec plots
* Shows sunrise/sunset on circle map
* calculates circle map (high definition) for location
* Plots helion and Sporadic sources
* shows sun and moon terminators
* can select map types and plot colours
* has Notes section to explain terms used
26/6/2025 Works fine with Android 7 (prevent program from being backgrounded ?), run the program twice;
first time type in grid locator for 'placename'
second time, download beacon list (to enable bearings menu), then calculate a cirle map...
More than just the X1 was required, so I installed a bunch of certificates, (the E5 being required).
bunch of certificates.zip
The CRC here apply to these ones only, since a different cross sign would produce a different certificate.
Only install certificates from a trusted source (from the Issuer; 'Let's Encrypt').
Installing arbitrary certificates can prevent settings>security from working on Android (6).
The metrcal54 apk will work for meteor only without updating the certificate, here is example screenshot of the Geminids
reliable night time shower for Northern latitudes (drag the lower edge block to change time):
Build Superregenerative converter
Build Balanced line tuner
Build 3rd Order loop filter
Build Mega16 Text Beacon keyer
Software dotnet 3.5
comparing speech codecs