Apache Labs ANAN-100/D - Tuning the P*SDR Receiver

Apache Labs ANAN-100/D
Tuning the P*SDR receiver.
Author Bill KC9XG
Your ANAN-100/D is a "knobless" radio. Most functions are performed on a PC with the mouse or via
keyboard commands.
Preliminary receiver setup:
1. On the left side of the P*SDR window, locate the "AGC Gain" control and set the slider to 90. This
control works similar to an RF gain control, but actually controls the level where the "Automatic Gain Control"
adjusts your receiver gain for best dynamic range. The Panadapter displays a green G and a dotted line
showing the current "AGC Gain" setting. This should be set just above the noise floor displayed on the
panadapter.
2. the "ATT" or Attenuator dropdown box (lower left, below the "AGC Gain" control, should be set to 0db.
Note that some versions of P*SDR have some attenuator settings that may not work as expected.
Changing frequency:
The mouse can be used to tune signals on the Waterfall or Panadapter. Select an active amateur band by
clicking on one of the band buttons located just below the "S Meter" in the upper right portion of the P*SDR
window.
1. If you press and hold the left mouse button you can "drag" the frequency of interest into the
panadapter highlighted filter area.
2. If you right click the mouse on the Panadapter you can go into "click tune" mode. Left clicking with the
mouse will then QSY the receiver to that frequency. You can right click again to revert from "click tune" mode to
"drag" tuning mode.
3. The "Zoom" slider and the "0.5x, 1x, 2x and 4x" buttons can be used to modify the frequency range
displayed in the Panadapter. These controls are located just below the Panadapter/waterfall display. The "Pan"
button can be used to move the displayed frequencies within the selected range.
PowerSDR "Dup" button
The PowerSDR "DUP" (DUPLEX) button enables RX1 reception during transmit, allowing the user to view the
transmitted RF signal in the Panadapter. The ANAN-* transceivers switch the selected antenna (ANT1, ANT2, or
ANT3) to ground during transmit, thereby protecting the receiver from damage due to high RF levels.
Monitoring of the RF transmission using the "DUP" feature is only possible in Pandapter and Panafall modes.
PowerSDR "CTUN" button
The PowerSDR "CTUN" button enables "Click Tuning" while using the panadapter and waterfall displays. "Click
tuning" when active, allows you to click within the pandapter or waterfall to QSY without shifting the Panadapter
or Waterfall display. When "CTUN" is inactive, clicking on the Panadapter re-centers the panapadapter, thereby
shifting the entire panadapter. Note that the "CTUN" function only works within a frequency range equal to the
sample rate. IOW, if the selected sample rate is 384khz and RX1 panadapter is 1 mhz, wide, CTUN will only
function within the center 384khz of the panadapter or waterfall display.
Revision v1.8 April 23, 2013 36 of 70 authors N9VV and KC9XG