NaP3 (Panadapter) SDR Software (F5VNB)


(For SDR-FORUM / Questions , Answers or Remarks ... scroll down on this page.)


NaP3-v.2.6.6.     NaP3-v.2.8.8.     NaP3-v.3.0.0.     NaP3-v.3.1.0.

NaP3-v.4.0.0. RC1     NaP3-v.4.0.0. RC3

Please NOTE : The version of NaP3-v.4.0.0 RC3 has a bug and so not on all systems it will run ok without a crash and as result You get a frozen screen . I don`t know who could in future time solve this bug . See this link :          (             Also it is strongly recommended if You like to install or change between the different versions that You at first NOT ONLY let run the programs uninstall-routine ... because some entries in the computer-registry will not deleted and the install process of the other version will not run and also the program will not start ! Also it is recommended it should be done a database-reset in the older / earlier version of NaP3-program. For get a really clean registry and clean new installation without old entries from earlier versions of NaP3 You must clean the "brain remember" of the computer manually by using this software here :     Revo - Uninstaller 1.95 .

As far as I know , is the SDR program NaP3 OPEN SOURCE software. Unfortunately , I am not a specialist for software development and I do not know from where the source code is to get of the program for further developments or possible bug corrections - maybe could make from radio amateurs , who deal with software development as hobby in their free-time .

NaP3 SDR Support - Forum - Questions - Answers

Antw.:"Red-Cross..." ?

Jens / HB9JOI 07.11.2014
That is exactly the problem which have the NaP3-Version v.4.0.0. RC3 !
It is a bug and was not more solved from F5VNB`s development activities .
If anybody have the same problem then use another , earlier Version of NaP3 .
73`s de Jens / HB9JOI

Antw.:Antw.:"Red-Cross..." ?

Floyd - K8AC 12.11.2016
I get the red cross often when changing bands on the transceiver. The work-around is to cause the band switch from NaP3 by mousing on the desired band button. Never get the error when I do that.

Antw.:"Red-Cross..." ?

Terry 16.08.2015
Use only region 1

Spots not visible on Panadapter/Panafall

DL2GRF, Frank 03.11.2014
Hi folks,
I have a DX Cluster Connection and Dx Cluster messages are received. But not displayed in the panadapter with it´s callsign. I believe it´s a problem of "," and "."
The pictures on the homepage shows VFO A and B frequency with a ".". My VFO A and B shows "," like 21,079280 instead of 21.079280. So I believe DX Cluster frequencies e.g. 24955.0 could not be displayed.
What do you think and what can I do?

73 de Frank, DL2GRF

Antw.:Spots not visible on Panadapter/Panafall

Frank DL2GRF 04.11.2014
Hi all,
I can give me myself the answer. I have tested it. It is the problem! Removed NAP3, changed decimal settings for "." and "," in Windows, installed it again and it works.

I try to inform the programmer to change it to work with both settings

73 de Frank, DL2GRF
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