Amateur Radio Station K9DUR
Continuously Licensed Since 1960
Amateur Radio Software 

SmartSDR® Utilities

The following programs were written by Ray Andrews, K9DUR, for use with SmartSDR® by FlexRadio Systems. They may be freely distributed for non-commercial purposes as long as no fee is charged except for the cost of the distribution media.


I do not charge for any of the programs available on this page.  However, developing & maintaining them is time-consuming.  A donation to show your support is always welcome.

Please click on the Donate button below to go to my donation page where you can make a secure donation using PayPal. Thank you.

Although the programs are free, they are not open source.  All programs are the intellectual property of and are copyrighted by RNA Consulting Services, LLC,  They may not be decompiled or reverse engineered for any purpose.






t MorseKeyer6k (v1.1.2 - Released: 10/14/2017) -- This program provides an enhanced CW keyboard/memory keyer system for SmartSDR.  (Requires SmartSDR v1.4.11 or later.)

Download the User's Guide for more information about the program.

t SDRAutoCenter (v2.2.0 - Released: 12/2/2018) -- This program automatically adjusts the panadapter center frequency as you tune around the band.

Download the User's Guide for more information about the program.

t SDRMemory6k (v5.0.0 - Released: 12/19/2018) -- This program provides an enhanced memory management system for SmartSDR.

Download the User's Guide for more information about the program.


t SDRMonitor (v2.3.1 - Released: 05/13/2018) -- This program displays 2 small windows containing the power supply voltage and power amplifier temperature of a FLEX-6000 series transceiver.

Download the User's Guide for more information about the program.

NOTE:  This version requires SmartSDR v1.10 or later.

t SWRPlotter6k (v3.2.0 - Released: 01/04/2019) -- This program allows you to plot SWR charts of your antenna system using a FLEX-6000 series transceiver.  

Download the User's Guide for more information about the program.

t VoiceKeyer (v5.4.0 --  Released: 10/11/2018) -- A digital voice keyer which allows selection of the sound card used to interface to the radio.

What do I do if a program cannot "see" my radio?
Most of these programs communicate directly with the radio over your local area network (LAN) using an ethernet or WiFi connection.  In order for this to work, often the program must be manually granted permission to go through the Windows Firewall. The following document will give you step-by-step instructions on how to grant this permission:
How to allow a program through the firewall

Last Update:
January 17, 2019
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