How to use the Memory Form

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How to use the Memory Form


How to Use the Memory Form

  System Dependencies
  Minimum PowerSDR Version:     2.1.5 
  Applicable Hardware:     All FlexRadio Systems SDRs 

Content provided by: FlexRadio Systems Engineering

An enhanced Memory form that incorporates new features and supports the new FM Repeater mode of operation is available with PowerSDR v2.1.5.  The new Memory form (or window) is designed primarily for FM mode, but can be used with any mode.  A representative screen shot of a populated Memory form is shown below.

PowerSDR Enhanced Memory Form
(Click on the image to display a higher resolution version)

As you see, each memory form record consists of different data fields.  The table below describes each memory channel field in the memory channel entry.

  Memory Form Field Description
 Group   This is a "free form" field that you can categorize memories based on user defined group name 
 RX Frequency    This is the receiver frequency for VFO-A  
 Name   This is the name of the memory that is displayed in the Channel drop down box on the console when in FM mode  
 DSP Mode   This defines the Mode of operation for the memory entry. All PowerSDR modes are valid and selectable using the drop down box 
 Tune Step   This defines the Tune Step value for the memory entry. All PowerSDR Tune Step values are valid and selectable using the
 drop down box 
 RPTR (Repeater mode)   This determines if the radio is operating in simplex or Repeater mode. High, Low and Simplex values are valid and selectable
 using the drop down box 
 RPTR Offset   This defines the Repeater offset frequency in MHz. Valid only in FM mode 
 CTCSS    This check box determines if a CTCSS tone is added when transmitting. Valid only in FM mode 
 CTCSS Freq   This defines the CTCSS frequency or sub-audible tone in Hz transmitted. Valid only in FM mode 
 Deviation   This determines the transmit frequency deviation selectable using the drop down box. Valid only in FM mode 
 Power   This determines the transmit power in watts. Valid values are 0-100 
 Split   This determines if the radio is in SPLIT mode. If this option is selected, the radio is automatically taken out of Repeater mode and
 put into SIMPLEX mode.  Refer to the KB article How to Use FM Repeater Mode for additional information.
 TX Frequency   This defines the transmit frequency. It is a user defined value that is valid only in the simplex mode of operation. 
 The default value is the RX frequency unless you are copying data from VFO-A to memory when the radio is in Split mode and the
 TX  frequency is different than the RX frequency
 RX Filter   This determines the defined RX filter specific for the DSP mode. NONE is the only valid option for FM mode 
 RX Filter Low   This displays the RX filter low cut point. It does not define the RX filter low cut value in FM mode 
 RX Filter High   This displays the RX filter high cut point. It does not define the RX filter high cut value in FM mode
 Comments   This is a "free form" field that you can add comments specific to the memory channel 
 AGC Mode   This defines the AGC setting. The AGC setting is selectable using the drop down box
 AGC-T   This determines the AGC Threshold for the memory channel. Valid values are 0-100 


Getting Started with Using Memory Channels

To open the Memory form, select Memory from the PowerSDR menu bar.

There are several operations that can be performed to add, delete, manage and select a memory (or memory channel).  The following sections will describe these operations in greater detail.


How to Add a Memory Channel

Adding a memory channel to the Memory database is easy.  It will take the currently configured parameters on the PowerSDR console and store them as a memory channel "record" that can be recalled later.

  1. Open the Memory Form from the PowerSDR menu bar by left clicking on it
  2. Left click on the ADD button at the bottom of the Memory form
  3. A new memory channel will be added to the memory form at the bottom.
  4. At this point you can customize or change values in the new memory channel.  Changes you make to the memory channel record are automatically saved to the database so there is no need to do anything to save the changes
Adding a Memory Channel
(Click on the image to display a higher resolution version)


How to Select a memory Channel form the Memory Channel Form
Once you have created a memory channel using the ADD feature, you can recall or Select the memory channel which is change the PowerSDR operating mode to the parameters defined in the memory channel.  There are two ways to select a memory channel from the Memory database. You can select the memory channel directly from the Memory form or you can select the memory channel from the PowerSDR console when operating in FM mode.  This example selects the memory channel from the Memory form.

  1. Open the Memory Form from the PowerSDR menu bar by left clicking on it
  2. Left click on the SELECT button at the bottom of the Memory form
  3. The information in the memory channel will be transferred to the PowerSDR console
Selecting a Memory Channel from the Memory Form
(Click on the image to display a higher resolution version)


How to Select a Memory Channel from the PowerSDR Console

As noted above, there are two ways to select a memory channel.  The following example demonstrates the second way of selecting a memory channel by using the option in the PowerSDR console when operating in FM mode.

  1. From the PowerSDR console, select the FM mode
  2. In the FM mode specific control area on the console left click on the Channel drop down box
  3. A listing of all memory channels will be displayed (see screenshot below).
  4. Left click on the memory of your choice.  In the example below the SkyWarn memory channel is being selected.
  5. The information in the memory channel will be transferred to the PowerSDR console

Selecting a Memory Channel from the PowerSDR console
(Click on the image to display a higher resolution version)


How to Copy a Memory Channel

If you want to make a copy of an existing memory channel to use as a starting point or template for creating a new memory channel, you do this by executing the following procedure.

  1. Open the Memory Form from the PowerSDR menu bar by left clicking on it
  2. Using your mouse, left click on the far left hand side of the memory channel you want to use as the source information.  The memory record will highlight and there will be a right pointing triangle in the far left hand side indicating that the memory channel has been selected.
  3. Left click on the COPY button at the bottom of the Memory form
  4. A new memory channel will be added to the memory form at the bottom.
  5. At this point you can change values in the new memory channel to create a new unique memory channel. Changes you make to the memory channel record are automatically saved to the database so there is no need to do anything to save the changes.
How to Sort Memory Channels

You can change the sort order of the memory channels by simply clicking on the column header. 

Left clicking on the memory column header once will display a small upward pointing triangle indicating that the column is sorted in ascending order from top to bottom.  Left clicking on the column header again will display a small downward pointing triangle indicating that the column is sorted in descending order from top to bottom.

How to Delete a Memory Channel

You can delete unwanted or un-needed memory channels by using the Delete feature in the Memory form.
  1. Open the Memory Form from the PowerSDR menu bar by left clicking on it
  2. Using your mouse, left click on the far left hand side of the memory channel you want to delete.  The memory record will highlight and there will be a right pointing triangle in the far left hand side indicating that the memory channel has been selected.
  3. Left click on the DELETE button at the bottom of the Memory form
  4. A confirmation dialog box will appear asking you "Are you sure you want to remove the selected row(s)?". Left click on YES to delete or NO to abort this operation
  5. If you clicked YES, the memory channel was removed from the Memory database.

Modifying Data in a Memory Channel

Once you have a memory channel defined, you can change any of the data fields on the memory channel record.  Note that if you change the value of one field, that it does not necessarily update other fields in the memory channel record.  As an example, if you change from Simplex to Repeater mode with a positive 0.600 MHz offset, the TX Frequency is not updated to reflect a TX frequency that is  0.600 MHz greater than the RX Frequency.




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Last Modified:Monday, August 15, 2011
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Type: HOWTO
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