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A paper QSL-card will be send after confirming your contact by email.

And feel free to mail me screen-shots/audio recordings when I'm doing

digital modes. Specially screenshots from my PI4 beacon..


On 70.095.000 having a multimode beacon with JT6M, PI4 & WWV.

Soon I will add ISCAT-A/B. This as replacement for JT6M.

Don't know yet if it will be mixed JT6M/ISCAT eg. 1st/2nd

30 seconde or even/odd minute. Reason for this is to find out

the S/N difference between them. Also for TEP+Ms experiments.

For receiving both modes at the same time run simultaniously



For all modes the dial is 70.094.200 USB when using the PI4-rx

or WSJT programm. When right tuned the CW carrier is at 800Hz.

Therefor the announce frequency in the cluster is 70.095 !!!


The PI4 mode is time scheduled from 9.00 UTC till  21.00 UTC

The WWV mode is time scheduled at 12:00 UTC & 18:00 UTC

for a limited time of 10 minutes to do your (SSTV) adjustments.

The JT6M mode is also time scheduled with the major big showers

and is scheduled from 18.00 UTC till 9.00 UTC.


The major showers are:   1/1 -    9/1      Bootiden

                                         1/6 -  13/6     Arietiden

                                         7/8 -  19/8     Perseiden

                                       8/12 - 20/12    Geminiden

The JT6M sequence is:     02 - 28 seconds JT6M callsign

                                          32 - 50 seconds CW FSK callsign/locator

                                          50 - 59 seconds CW carrier


    The PI4 sequence is:     00 - 24 seconds PI4 callsign

                                           25 - 42 seconds CW FSK callsign/locator

                                           43 - 59 seconds CW carrier


Also there is a CW-special mode for e.g season greetings.

The beacon produces 10w input into a 4-band inverted-V.

On request I can change power/mode/time for experiments.


PI4 is designed to serve most kind of (known) propagation.

Like tropo, Es, Au, meteor scatter and airplane scatter.

When you hear the beacon, I prefer to notice it in the DX-cluster.

The beacon is already heard by 14 DXCC:

9A, CT, DL, EA, G, GW, IK, IS, OE, OH, OZ, PA, S52, SV


Propagation type receivement: 1= decode 0= no decode *= no one tried this


               CW        PI4

Tropo        1            1

Es              1            1

MS            1            1

AS             1            1

Au             1            *

TEP           *            *

EME          *           *


As seen in the list it is very important you use the PI4-rx programm for examing

the PI4-mode. Without this it is like: Hey, I hear a digital signal but don't know

who it is.



For more info/software use these links:




Everything is homebrew with the Arduino 2560, DDS 9850

and the OZ2M 10/4 transverter with PA.

When you self want to run a PI4-beacon or normal CW, this can

very cheap. For aprox. 20,- euro you have a nice ready kit.

(price is exclude GPS-unit from Ebay or so). Take a watch at:




But when you like, you can change the Ultimate

software into my written PI4-programm.



PI4 software for the Arduino 2560 is written in Arduino's C++

A PI4-version in C++ for the Ultimate 3 is availble.

And I have a CW-keyer for the Ultimate 3.

Also an setup for all ports of the Ultimate 3

for programming your own software.


C++ software and pictures are availble with this link:



1905345 Last modified: 2015-04-24 17:10:16, 5643 bytes

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