Refer to the above picture for a description of
the controls. Color overlays are used to explain button
functions by section.
Carefully read the whole section because there are a number of not so
obvious controls which are revealed as context menus when right
clicking some of the buttons shown. The following section refers to the
menu choices at the top of the NaP3 window.
This pulldown menu has four choices...
Configure NaP3, allows
of all parameters, arranged into 8
different tabs. A thorough discussion of each tab is presented further
down this page.
Equalizer, allows setting of
the multiband equalizers for receive audio
Macro Commands, allows setting up
of macros for user specific functions
Transverters, allows setup of
transverter band buttons.
Starts and stops
processing of incoming data.
Toggles to the collapsed view which hides many of the
controls and allows the pan window to fill the screen. Some of the
other controls can be selectively added back based on the settings in
the Options tab in Setup.
Memory... Allows user to set
up multiple memories with 12 different paramaters per memory
DataText... Provides a
window to display text from the K3 CW / Data text decoder
Record... Controls for
digital recorder to record and playback entire screens on IQ audio data
Spots... Setup screen for
telnet spots. These can come from well known web cluster telnet sites
or from local telnet servers like the one in CW Skimmer.
Help... Comprehensive help
file written by the NaP3 author, Pete, F5VNB.
Donate... Please consider a
PayPal donation to Pete for all his hard work on this great program!
shows current rig main VFO frequency. Can be changed by entering a
frequency, adjusting mousewheel or pointing and clicking in the
display. Right clicking in the display will add yellow crosshairs.
Placing the crosshairs over a signal and left clicking will cause the
rig to jump to the signal. Right clicking again will turn off the
crosshairs, or change them to red if SPLIT or SUB is on. Left clicking
the red crosshairs will cause VFO B to jump to the signal's frequency.
Adjusting the mousewheel will fine tune. The frequency offset, signal
level and absolute frequency of the crosshairs position is displayed
below the pan window at the left of the screen in small blue letters..
Mousewheel tuning step size lets the user determine the
rate of mousewheel tuning.
FFT samples, below mousewheel tuning step, allows setting the
horizontal frequenct resolution of the panadapter spikes (FFT bins).
The higher the number, the better the resolution as you zoom into
narrower frequency spans. Note: Too high a number will bog down slow
PCs, and display more extranneous household and neighborhood noises.
These settings are saved per mode in the NaP3 band stacking memories.
VFO B, see VFO A explanation
S-Meter, can be set to read Avg or Signal, dBm or S-Units.
This section constains the following
SUB... Turns the NaP3 sub-receiver on and off, and determines whether
if follows VFO B as in SPlit operation, or acts as an independent third
receiver if the rig already has a sub-RX. SUB must be on (and/or SPLIT)
in order to see the second passband indicator in the display, and to
enable mouse tuning of VFO B.
SPLIT, A/B, A>B, Zero Beat... Self
explanatory. These control correspondingr functions of the rig.
AVG, display selector, Peak... The AVG button turns on averaging in the
pan window to minimize noise. The display selector allows the user to
select Panadapter, waterfall or a split-screen of both to fill the pan
window. PEAK button causes the signals to accumulate at the highest
level for each frequency bin. This is useful for spotting openings,
especially on 6m/VHF/UHF. AVG and PEAK are dual functions buttons. AVG
is also used to set the baseline noise level for each band, and the
vertical range for each band. Hover over the AVG button with your mouse
for directions. These adjustments are saved in NaP3's band stacking
memories. PEAK works in a similar way for the waterfall minimum and
Free/Fixed, Zoom Slider, Centre... These control the behavior of the
pan window. Free/Fixed toggles between free tune mode and fixed tune
mode. In free tune mode, the IF center is always in the middle of the
frequency display. In Fixed tune mode, the background is locked in one
position and both VFOs can tune across the display independently. There
are some limitations when the zoom is set to the maximum width in Fixed
mode. The usable limits are greyed out in this case. The Zoom Slider
allows the user to zoom from maximum display width (up to 192kHz
depending on sound card) to minimum (as narrow as 1kHz or less). Centre
recenters the display in Fixed mode. The Free/Fixed button is also used
to adjust the ratio of panadapter to waterfall window proportions in a
similar way that AVG and PEAK are used to adjust the levels. Hover over
Free/Fixed for tool tips.
This section contains the Band, Mode
and Filter buttons. The control the corresponding functions of the rig.
Depending on the rig, you may or may not be able to set the exact
filter widths shown. You can change these buttons to match your rig.
Please see the author's help file for more details about filters, and
for details about how the filter buttons interact with various rigs.
Band buttons can display transverter bands if you set up transverters.
MUT, mutes the audio output of the
software (sound card).
RX EQ On/Off, enables the EQ settings that are set in the equalizer.
The equalizer itself can be accessed by selecting Equalizer in
the menu bar.
RX A and RX B audio gain controls, are used to adjust the audio output
levels of the main and sub receivers. A, feeds the left channel and B,
feeds right channel of your sound card outputs. When the
subreceiver is not enabled, or SPLIT is not enabled, RX A feeds both
AGC-T (threshold), works like the RF gain control on a real radio. Sets
threshold where AGC action starts. Defaults to 80.
Squelch On/Off and Threshold, works like a normal squelch. Pressing the
button turns it on. Sliding the slider adjusts the threshold. The
little S-Meter below the slider aids in setting the threshold. Used
mostly for FM.
CPU... shows the percentage of CPU power being used by your system.
Anything consistently under about 70 - 80% is fine. Most modern PCs
will be below 20%.
AGC... AGC hold time.
BIN, binaural mode. Creates a
stereo field of signals based on
frequency and phase to position signals between the user's ears.
NB / NB2, turns on digital
noise blankers. Extensive settings for these
can be found on the DSP tab in Setup. This control, and the following
four controls do not change any parameters in the rig. These affect the
audio output of NaP3, as heard on the sound card speakers/headphones.
NR, turns on digital noise reduction. Extensive settings for this are
found on the DSP tab in Setup.
ANF, automatic notch filter. Automatically detects and notches out the
strongest offending carrier in the passband. Extensive settings for this are
found on the DSP tab in Setup.
picture shows a section of NaP3 pan
in Fixed mode, which locks the background in place while allowing the
two VFOs to be tuned separately over the background. Filter overlays
for VFO A Main (green) and VFO B Sub (yellow) are also shown. They are
currently only fully linked to the rig if it's a K3, but support for
the other rigs is in the works. Also shown is VFO B transmit
in split operation (yellow lines). The yellow crosshairs indicate the
mouse cursor position. They change to red when adjusting VFO B. Note: Some of the colors have been
changed in Setup from the defaults.
The blue numbers below and at the left side of the window represent the
frequency offset, signal level and absolute frequency of the crosshairs
position. The ones at the right side represent the frequency offset, signal level and
absolute frequency of the strongest signal in the window.
The latest "stable" version is v4.0.0 RC1
2014), and is available here.
There is a known bug in this version. When using
RC1, set the Band Plan under the Display tab to Region 1 before running
(even if you're not in Region 1). This will avoid an error which
replaces the pan window with a large red X.
Pete has recently ceased development / support of NaP3, so it is not
known when or if this bug will be fixed. Even with this minor bug, NaP3
is by far the best SDR app for use as an IF based panadapter.
Operational support is available from a number of outside user groups,
including the LP-PAN User Group.
Note: When changing between major
version releases (like from v3.x.x to v4.x.x), you need to reset the
database, or delete it. This is because the format of the file has
changed over time to accommodate expanded capabilities. The database
file is called NaP3.xml, and is located in your C:\Users\<your user
name>\AppData\Roaming\NaP3 folder. Your user preferences and
settings will be lost, so you must write them down before doing this.
If you are running LP-Bridge or LPB2, you will
also need to upgrade those. K3
users should update LP-Bridge to v1.08 to take advantage of all the new
features of NaP3,
http://www.telepostinc.com/Files/LP-Bridge_108_update.zip . You
will have to update to the full version v1.07 first, http://www.telepostinc.com/Files/LP-Bridge_107_full.zip
For non-K3 users, the latest version
is v1.06 full, http://www.telepostinc.com/Files/LPB2_106_full.zip
Note: Be advised
that the new versions all use the latest Eltima drivers, which makes
loading of LPB slower than the older versions, but makes them windows 8
Unzip the folder and
run the Setup.exe or Setup.msi file. You will see the following screens
directions and accept all the
defaults. Note: If you already
have a version of NaP3 installed, you will see an additional screen
which will ask you if you want to repair or remove the existing version.
If asked about replacing an existing file with an older one,
always keep the newer file. When asked whether to allow access
to the program to "Everyone" or "Just Me", your choice will affect
access to the program and the path to where the database files ( with
all the settings) will be placed. With Everyone it will be placed in
your Users\AllUsers\AppData\ path. With "Just Me" it will be placed in
path. To avoid confusion, we recommend the "Just Me" choice.
After closing Setup and launching the
program for the first time, it will run a one time check of forward and
reverse FFTs. Here's a picture of the screen you will see during this
Just click OK to close the warning screen that accompanies this. When
it finsihes, the program will start. Proceed to the next section for
NaP3 Help -
Click to open NaP3 Help in Windows Help format... NaP3
This version is a little newer than the help file in NaP3 v4.0.0 RC1,
and includes help on the Spots feature. You can access this directly by
clicking on the link and selecting Save File. Navigate to the saved
folder and open it. Click on the
NaP3_Help.chm file to view the help. For convenience, you can create a
shortcut to this file and put it on your desktop. I have also created a
simple pdf of the same info, but the formatting is not nearly as nice, NaP3_RC2_Help.pdf.
The document will look much cleaner if you save it to your desktop and
open it from there, rather than opening it directly from the link. The
chm file is much preferred.
Restoring lost Spots window...
If the spots window does not appear when you click on Spots, it is
because it is off screen somewhere. To restore it, use this trick.
Hover over the NaP3 icon in the Taskbar. Slide your mouse pointer up to
the small version of the Spots window and right click. Then chose
the Move option and left click. If you now press any arrow key, the
window will appear and can be moved with the mouse. Note: Once the
window is back, you can right click in any free space in the window and
will see some options. One of the options is Autostart. If you click on
Autostart, the spots program will start whenever you start NaP3. You
won't need to use the spots window again unless you want to change the
This help file covers the important
settings in NaP3. After successfully getting things going, you can
adjust the IF Frequency Offsets as shown in the pictures below to fine
tune the signal positions withing the display. This is required for all
rigs except the K3, which reports this information to NaP3 using
special CAT commands.
Here are examples of the rig setup tab entries for the most popular
rigs (K3 and FTdx3000/5000). In addition to the settings shown, you
need to select the proper com port for your rig. The filter width and
shift boxes should only be checked if you wish to have the SDR filters
track the rig filters. To use the SDR filters independently, leave
these unchecked. Baud rate should be the fastest that the rig allows.
Make sure that the rig is set for the same baud rate that you select
here. PSK settings are not shown for the Yaesu rigs are shown as "0",
but probably need to be some other value. Check with Yaesu owners on
the LP-PAN user group.
Values for other rigs will be similar to the FTdx3000/5000 settings,
with the exception that for the FT-950/2000, you will need to reverse
the audio cables or the IQ channel settings because the IF-2000
interface boards inverts the passband.
What do these figures mean, why
are they here and how are they fine tuned?
All transceivers use a carrier offset in most modes (except AM and FM).
This is inherent in the design of transceivers, since regardless of
mode, the rig must provide a BFO signal that produces a demodulated
signal with the proper pitch. Each manufacturer uses different values,
but they fall in a general range of about +/- 1500 Hz for SSB, and +/-
300-800 Hz in CW (the CW offset matches your rig's "sidetone pitch"
setting). As stated before, the K3 sends this offset data to NaP3 via
special CAT commands, so the user does not need to enter anything.
The Global Offset is due to an intentional IF offset built into LP-PAN
/ LP-PAN 2. Unless you have a very old LP-PAN, the offset is -6000
(negative 6000 Hz). This moves any sound card anomalies such as DC
offset, hum and noise away from the tuned frequency.
When adjusting the offsets, enter the values shown. These will
generally be within 100Hz or so of optimum. To fine tune, start with
AM. Tune your rig to a known broadcast station such as WWV or a local
AM station. Set the rig for EXACTLY the station's frequency. Examples
would be 10.000.000 (WWV), or 760.000 (WJR, Detroit... my strongest
local station). The carrier should be exactly on the red centerline in
the pan display. If not, slightly adjust the Global Offset until it is.
Zooming into the display will make it easier to see any positioning
error. Increasing the FFT size(in the S-Meter section of the main
display) will provide even more resolution.
If you are only using NaP3 as a visual display, this is all you need to
do. If you plan to also listen to the demodulated audio from NaP3, you
will have to fine tune your other modes by comparing the pitch from
your PC speakers to the pitch from your rig in each mode. I find that
listening to AM broadcast band or SW stations thru NaP3 gives much
better fidelity than listening thru the rig speakers. In some cases,
the DSP controls in NaP3 will also outperform the rig, especially the
noise blankers which are highly configurable.
If the sidebands sound inverted, or the adjustment work backwards, you
will probably have to reverse your audio cables, or click Swap IQ on
the Input tab in Setup.