Home
Lost Reg Code?
News
Online KiwiSDRs
macOS Software
Windows Software
Ham Radio iPhone/iPad
Linux Software
Support/FAQ
Update Policy
USB Icom CI-V Interface
Radio Hobbyist Products
22m Programmable Beacon Kit
22m Part 15 Beacon Kit
CW Keyer For Beacons Kit
Jellyfish Transformer
Cyclops Antenna Transformer
General Interest Programs
Atomic Mac/PC
Audiocorder
Audio Toolbox
Black Cat Timer
Diet Sleuth
iUnit
Graffikon
Graph Paper Maker
Health Tracker
Image Resizer
Knitting Wizard
Label Wizard
Prog Audio Gen
Sound Byte
Synth 76477
Amateur Radio Programs
AirSpyHF+ Server
Audiocorder
Black Cat Absolute ACARS
Black Cat ACARS
Black Cat ALE
Black Cat ALE Vacuum Cleaner
Black Cat NetFinder
Black Cat GMDSS
Black Cat HF Fax
Black Cat SSTV
Black Cat NAVTEX SITOR-B
Carrier Sleuth
Cocoa 1090
Cocoa RTL Server
DGPS Decoding
DX Toolbox
Elmer
MatchMaker
KiwiKonnect
KiwiSDR Monitor
KiwiSDR Sound Client
MININEC Pro
Morse Mania
MultiMode
sdrRewind
RF Toolbox
SDRuno Plugin
SDRuno Equalizer Plugin
SelCall
Sonde
iPhone/iPad Apps
ALE
Atoms To Go
dB Calc
Clik Trak
DGPS Decoder
Drill Calc
DX Toolbox
Elmer Extra
Elmer General
Elmer Tech
Feld Hellschreiber
Field Strength Calc
Function Generator Pad
GMDSS
Godafoss
HF Weather Fax
iAttenuate
iFunctionGenerator
iSoundex
iSoundByte
iSweep
iUnit
Morse Mania
ACARS Pad
Morse Pad
NAVTEX Pad
Packet Pad
PSK31 Pad
SSTV Pad
Photon Calc
Rad Map Tracker
RF Link Calc
SelCall Tone Gen
Sound Byte
Sound Byte Control
Spectrum Pad
SWBC Schedules
Synth 76477
Synth Motion
Transmission Line Calc
Weather Calc
Wire Calc
iPhone/iPad Bundles
RF Calculator Apps
Ham Radio Decoder Apps
Audio Utility Apps
Shortwave Weather Apps
Ham Radio Exam Study Apps
Shortwave Decoder Apps
About Black Cat Systems
Site Map
Our software for Mac OSX
Privacy Policy
Press/Media
HFunderground
Apple /// Emulator
Macintosh Links
Shortwave Radio
Pirate Radio
Spy Numbers Stations
Science and Electronics
Ham Radio Software
Receiving and Transmitting PSK31 With Your Macintosh
Introduction
Using MultiMode, you can send and receive PSK31 with your Macintosh. After connecting your Mac to your radio (see our interfacing notes for details on this), fire up your copy of MultiMode and set it for PSK31 mode.Next, tune in a station sending PSK31. For example, on 20 meters, 14070 is the most active PSK31 frequency, tune it in any time the band is open, and you are almost sure to hear several PSK31 stations active. Set your receiver mode for USB.
The above display shows the PSK31 tuning indicator in MultiMode. The audio spectrum from 600 to 2200
Hz is displayed, along with the intensity of the audio at each frequency. This lets a large number
of PSK31 transmissions be identified at the same time. To select a particular transmission, the
center frequency of MultiMode needs to be set equal to the center frequency of the transmission.
This could be done by typing into the Center frequency setting, but an easier way is to just click
on the center of the transmission. A red marker is set, showing the center frequency. In this case,
1487 Hz (which is also displayed in the Center frequency text entry box for your reference).
The + and - buttons allow the center frequency to be incremented or decremented in 1 Hz steps.
When properly tuned in, decoded text will start to appear in the text area of the MultiMode window.
For transmitting PSK31, your Mac produces audio as set by the center frequency. When you start transmit mode, using cmd-T, MultiMode will begin playing the PSK31 audio. You can feed this into your transceiver's microphone input to transmit PSK31. It's that easy!
Return to MultiMode
Return to Black Cat Systems
info@blackcatsystems.com Chris Smolinski