Wolphi - Mobile Software Development

DroidSSTV

Wolphi — Mon, 19 Mar 2012 21:45:39 +0000

DroidSSTV is finally available for download on Google Play (Android Market)DroidSSTV lets you transmit and receive amateur radio (ham radio) slow scan TV (SSTV) on your Android Smartphone or Android tablet.

This communications app is a great tool for portable amateur radio SSTV operation. Just connect your Android phone or tablet to an HF radio (or even set it next to the radio’s speaker), tune on to an SSTV frequency, and watch the pictures scroll onto the screen.

DroidSSTV supports the modes Scottie 1, Scottie 2, Scottie DX, Martin 1, and Martin 2 at this time.

The features in the receiving modes include:

Spectrum analyzer for easy tuning
Auto synchronization ( auto slant correction)
Auto mode detect
VIS encoding (detects SSTV header and sets mode automatically)
Level bar for adjusting the audio signal
Auto save received pictures to SD Card.
Share received pictures (Email , Dropbox etc.)

The features in the transmitting modes include:

Pre-load up to 9 pictures from the SD Card into DroidSSTV’s gallery
Adjust contrast, brightness and saturation
Template editor for easily overlaying templates over images
Macro’s for use with templates

Small Wonder Lab & DroidPSK

Wolphi — Fri, 17 Feb 2012 16:37:07 +0000

I received this nice picture from Tim (W9TCR) . It shows his Small Wonder Lab 20 meter PSK transceiver connected over Bluetooth to DroidPSK.

Blueooth support

Wolphi — Tue, 24 Jan 2012 04:06:27 +0000

I received a lot of request in the last couple of month about Bluetooth for my apps and I added Bluetooth to DroidPSK, DroidRTTY and Morse Decoder. Bluetooth can be enabled in the settings of each app. I am not really happy with the result so far. Receiving seems to work very good but while transmitting I noticed about 10-20% noise and some cracking sound (probably caused my missed packets). So Bluetooth mode is on experimental right now and I will do more research on how to improve the quality. Updates for the 3 apps are available on Android Market. I will upload them to AndroidPit soon.

I am looking for feedback on the Bluetooth mode…

Interview on ICQPODCAST.com

Wolphi — Mon, 16 Jan 2012 03:25:18 +0000

Are you interested in more information about my Ham Radio apps? I recently got interviewed by Ed Durrant (VK2ARE) about my Android Ham Radio apps for ICQPODCAST.com. The podcast series 5 episode 2 was published on 1/15/2012. You can listen to the podcast by clicking here or by visiting ICQPODCAST.com

Voice Keyer

Wolphi — Sat, 24 Dec 2011 16:25:10 +0000

Voice Keyer is an audio recorder tool to record and play back messages. The messages are easily accessible though 6 buttons. A long click on a button will record a message and a normal click will play it back.

A built in timer can auto repeat the messages in an adjustable interval.

Perfect for Ham Radio (Amateur Radio) operators as a voice keyer for SSB contests or voice beacon.

This is the first version of Voice Keyer. If you would like to see more features or have ideas to improve Voice Keyer please email me . I would like to hear from you.

DroidRTTY V1.01 available now on Android Market

Wolphi — Thu, 10 Nov 2011 19:15:55 +0000

DroidRTTY is available now on Android Market.

DroidRTTY is an Android application to decode and encode Ham Radio RTTY with the build in microphone/speaker or wired to your radio.

A waterfall shows the frequency spectrum of 100Hz to 2000Hz. Just slide the waterfall slide on a RTTY carrier frequency and DroidRTTY will decode the signal.

In transmitting mode characters can be entered trough the keyboard. 9 Macros are also available to store standard texts like “name and qth” and “station info”

DroidRTTY also includes a logbook. Callsign, Name RST etc can be easily transfered into the lookbook from the receiving screen.
The logbook also includes ADIF export and import to transfer your logbook data to a PC based logging software.

If you like to see more information you can take a look at the manual at : http://www.wolphi.com/droidrtty/manual/

FT-817 and Interface

Wolphi — Wed, 19 Oct 2011 02:43:23 +0000

Martin K0BXB emailed me this picture today of his FT-817 connected to his Droid 2 Global with this home made interface.

Interface for Android > FT817

Wolphi — Mon, 19 Sep 2011 02:11:45 +0000

This is a small interface which makes it possible to connect an Android cell phone or tablet to a radio for DroidPSK. The goal was to build an interface which doesn’t need an external power supply. Since the Android device doesn’t have a serial port to switch the PTT another solution had to be found.

Please click here for more information

DroidPSK V2.11 available now

Wolphi — Sun, 11 Sep 2011 19:38:50 +0000

DroidPSK is available now on Android Market. The following changes and additions have been made:

- new User Interface.
- new logbook with ADIF export / import.
- improved decoding algorithm
- improved waterfall
- macro keyword like etc.
- backup / restore of userdata, macros and logbook

An online manual is available here

Here some screenshots:

DTMF (decoder / encoder) V1.1 released

Wolphi — Tue, 12 Jul 2011 20:44:53 +0000

We just released version V1.1 of DTMF on Android Market:

DTMF decodes and encodes DTMF (Dual-tone multi-frequency) tones trough the phones speaker and microphone.

Encoder: Always 2 tones are assigned to each key.The length of the tone and the pause between the tones can be set from 35ms to 1500ms.

9 Marco’s can be used to play stores phone numbers, ham radio auto patch numbers, amateur radio echolink id’s any many more.

Decoder: The decoder detects the DTMF tones and prints them on the screen. A sophisticated algorithm detects the tones even in noisy environments.

Please let us know what you think. If you like DTMF please leave us a feedback at Google Market. If you have any suggestions please email us at info@wolphi.com