N3IZN and W6SZ have been running WSPR transmissions on 10 GHz ( 3 cm )
now for some time.
We hope a new channel could be added in order to use all features of
A this moment we are using 10368.405 MHz as dial setting ( this is temporary arrangement )
Exchanged reports can be viewed by selecting either "N3IZN" or "W6SZ" as call and reporter.
73 Rein W6SZ
If you are on 160 meters, or perhaps on 472 or 137 kHz, you may be interested in a new mode called JT9, designed especially for making QSOs on these bands. JT9 uses the structured messages introduced in 2003 for the JT65 mode, now widely used for EME and for QRP operations at HF. JT9 can operate at signal levels as low as -27 dB (in a 2500 Hz reference bandwidth), with one-minute timed transmissions. It also offers slower transmissions of 2, 5, 10 and 30 minutes duration, and the slowest mode can decode signals as weak as -40 dB. With one-minute transmissions, submode JT9-1 has a total bandwidth of 15.6 Hz -- less than one-tenth the bandwidth of a JT65A signal. The other submodes are narrower still: a JT9-30 signal occupies about 0.4 Hz total bandwidth.
JT9 is implemented in an experimental version of WSJT called WSJT-X. Some further details can be found at
and an early version of WSJT-X can be downloaded from
If you want to try JT9, I suggest using dial frequency 1838, which is also used for JT65A, PSK31, and MFSK. In default configuration WSJT-X allows transmission and reception 1 to 2 kHz above the dial frequency.
Please note: WSJT-X is in an early development stage. Your feedback (direct email to me is best) will be much appreciated. And feel free to email me for a sked!
-- 73, Joe, K1JT
My interest is mainly to observe propagation over the bands for my own education.
Until now I did use mainly FAROS for this purpose, because it gave me a nice graphical overview. The disadvantage was that the beacons from the International beacon Project are limited in numbers and only from 20m to 10m band.
So I was really missing 40m and 30m.
When I heard that WSPR 3 has a "frequency hopping mode", it was time to google for the program and try it.
In conjunction with the 25m wide broadband T2FD antenna I have now a combination with:
a lot of available beacons spread around the continents
a better overview when conditions are changing over daytime and band
a better general overview about the conditions
transmitting 160m up to 6m with a single antenna
The program is running continuous stable for days and it allows to run parallel for example SPECTRAN, to see immediately, if there is some signal to decode or other kind of noise around.
I'm very happy about the new opportunities.
I've made LF transverter using 10MHz reference signal from GPS receiver,
And have also modified 36MHz local OSC of TS-680V to GPS PLL.
Frequency accuracy is very good and drift is nothing.
But my antenna is very poor. Because of this reason I'm running 50W on LF WSPR.
I've been running WSPR on several days in October.
So far, my best DX on 1W has been LU8ENU at 11,208 km.
I seem to get N America around mid-day & S America later in the afternoon & early evening.
Graham - G3YJR
Put up a homemade 2 element quad today for 10m.. Am experimenting to see how much of an improvement it makes.. Have it pointed SSW starting at 02:19Z
I have published my WSPR standalone beacon code.
Everything is here on my blog, in french. The schematics and code comments are in english. The automatic translation will give you enough details to have the big picture on how to implement this mod and use the code.
All the parts are easy to find and buy and you have access to the full code for free.
However, if you are afraid of soldering I will soon offer a semi-kit for this, expected around 20USD (I hope less depending on shipping/taxes).
The kit will use a full LaunchPad board with USB port, so you will be able to reprogram it in order to generate any signal form you want.
Adding more resolution to the DAC (the R-2R ladder) will allow Hellschreiber or softer "keying form"...
Don't mind in asking through the blog comments if you need more details on how to implement it.
I am also waiting parts to build a prototype of a "Agile QRSS transmitter" based on a AD9850 DDS.
They are now cheap and easy to play with using an Arduino or a LaunchPad.
But more on this later on my blog...
Yan - XV4Y.
Well today I thought I'd try as a test.
On 10.1Mhz -
a) 1.5m homebrew "Miracle Whip" standalone indoors
b) A 25ft wire "picture rail" antenna.
As expected, the "picture rail" antenna got a lot more spots.
But the curious thing was that when I took a few callsigns that had been present
over the complete test period and looked at the average S/N ratio of each antenna
with them, the average gain was only 4db !
I'm puzzled by this, as this was not what I would expect.
I was expecting a lot more average gain, but then my sample of callsigns was small,
all about the same path length and direction. Even so, it's still a lot less than I was
Anyone else done similar tests / calculations ?
73 de Andy
Because of uncertainty and timidity, I have avoided any operation on 60M but today I decided to listen for some of the European stations. I also decided to search the ARRL website today, "60m 2012", for guidance on 60m transmissions. I found some interesting reading in ARRL's 60M Operations Guidance, "http://www.arrl.org/files/file/Regulatory/Recommended_Practices_Version_6_5.pdf":
1) the WSPR dial frequency of 5.2872 is outside of the U.S. allocated channels, i.e. the frequency is not authorized for US hams.
2) That U.S. hams are restricted to upper SSB voice or manual digital transmissions of less than 60 Hz bandwidth. ARRL is asking that digital operation be restricted to PSK31 and PACTOR III, "keyboard-to-keyboard."
Tonight, I was surprised to see several U.S. stations transmitting on the WSPR frequency.
What am I missing? Have U.S. operating privileges changed again since the changes announced in early March, 2012 or have some of our colleagues not noticed the changes that occurred then? I was just licensed in March so I have to ask, "Were 60M WSPR transmissions ever really acceptable in the U.S.?"
Our VHF WSPR Group meeting at 2012 Pacificon/ARRL National Convention was very well attended. Thanks to all who participated in our meeting.
Here is a link to our presentation slides.
Here is a photo of KI6STW, KJ6QBA and KP4MD at the Exhibit Hall.
We presented a PowerPoint with VHF WSPR basics for newcomers, followed by a forum to share our accomplishments, challenges, and for questions, answers and discussion about the future direction of VHF/UHF WSPR activity. The 2 meter WSPR online discussion group is at http://groups.google.com/group/2-meter-wspr
Been using the Yaesu FT-817ND with 2.5W into the 14AVQ vertical or the G5RV. Both these antennas are in my smallish backyard which is mostly taken up by two large Ash trees so the antenna elements are involved in branches and leaves. This compromises my signal somewhat but the station still receives and is received by other WSPR stations. Pretty amazing software.
I mounted the cushcraft R5 on the roof and it improoved the long distance reception on 20 mtr and above to ten.
Now I test a magnetic loop for 7.1 , 10.1 and 14.15 I intend to make the remote for tuning and direction, the ZS6BKW
is in the N/S direction and i can't hang it the E/W direction
so then I use the loop on the lower bands.
All WSPR operators are welcome to read and join the 2 meter WSPR study discussion on the Google Group at http://groups.google.com/group/2-meter-wspr Anyone may ask Glenn N6GN or myself for an invitation or log onto the site to request a subscription to the e-mail list.
09 Oct 2012 - New West Coast 2 meter WSPR DX record - 672 km W7PUA to WA6M
My only HF rig is a Kenwood TS-2000, and thanks to limited funds things are likely to stay that way for a long time. However, I'd like to reduce my transmit power below the 5 watts the TS-2000 provides as a minimum. Does anyone have favorite 5W QRP attenuator or kit they can recommend? Thanks you for your advice.
Now that I have been operating WSPR mode for a while, there is something that I would like to see opinions on from other WSPR ops. I have observed +10db signals and above "covering up" the weaker signals during the 2 min. rcv sequence. I normally run 5 Watts output or less,and I have a friend nearby (9 miles) who is also a WSPR op., because of this I have reduced my TX fraction to 15%, which lets me trx approximately every 14 mins. and since most WSPR stations are transmitting @ 20%,( approx. every 6 to 10 mins. ), this lets my friend/neighbor receive most stations before I "clobber" him with +10 and above signal. Seems to me that a courteous procedure would be, if running 5 Watts or above, reduce TRX % below 20%. OK, it is just MY opinion, but it works for my neighbor and I, seems to me , it would improve reception for more WSPR ops everywhere. NUFF said...
I've recently been working on getting WSPR working on my Raspberry Pi with a cheap USB audio adapter and though that a others may be interested in the problems/solutions I've worked through.
In particular I've tried compiling WSPR using the -mfloat-abi=hard compiler flag which forces hardware floating point when compiling for ARM CPUs. The compile time drastically increased (mainly due to severe RAM/Swap usage while the linker was running) but it seems to have dropped decode times from about 60 seconds to ~15-20 seconds. To be honest though I don't know if this is a real speed up or simply a product of the particular data that was captured/decoded.
If anybody has a Rasperry Pi (or presumably another ARM board such as a Panda/Beagleboard) and would like to test/compare my binary it can be found here: http://www.vk2mev.net/wspr_hardfp_rpi.tar.bz2
The other problem I had was the USB sound adaptor (lsusb output: ID 0d8c:000c C-Media Electronics, Inc. Audio Adapter) recording choppy audio. This was solved by forcing the USB host to v1.1 mode (12Mbit) by adding "dwc_otg.speed=1" to /boot/cmdline.txt.
More details can be found on my blog: http://www.vk2mev.net/
If you have linux operating system installed on your computer like ubuntu and Wine running in the background,WSPR will work very well ,So good you will ferget your using linux ,And not windows os. NY7U
I have greatly re-worked the set of things which happen to do the daily processing after 0000Z (database backups, dump of csv extracts, gathering of data for stats/graph page). I was also being a bit too aggressive about how many web server processes to run, with the result that the server was swapping during all the stats processing. I think that should all be fixed now.
On another front, I have started to keep another database table of an "activity log", which should aid in future automatic fixup of wrong band reports. I have some more development to do, but stay tuned!