The Weak Signal Propagation Reporter Network is a group of amateur radio operators using K1JT's MEPT_JT digital mode to probe radio frequency propagation conditions using very low power (QRP/QRPp) transmissions. The software is open source, and the data collected are available to the public through this site.

Tests planned tomorrow in the morning

WSPR 28124,850 kHz
FSKCW 28000,850 kHz
CW 28280,850 kHz

Daniele, IZ5WWB

HB9HFR paramétrage logiciel pour signal link


je redémarre les modes numériques avec la même configuration que vous Michel KX3 et signal link pour l'instant je ne fais que de la réception . Comment paramètrer vous le logiciel wspr au niveau des port pour l'émission, utilisez vous le CAT enable ?
Je suis très friand de votre expérience le paramètrage des cartes son me pose souvent problèmes

WSPR is great way to learn radio propagation, much better than just reading books

I learned so much about radio propagation during last few weeks thanks to WSPR network. I think WSPR is also a good way to track someone on trail, it's like hams' "SpotMe" without paying any fee. Fantastic!

My first field tx test with Ultimate2 postponed

This morning was a clear and sunny day here in JN53, but definitely too windy to be comfortable both for me and my telescopic whip antennas. Well, at least all stuff is ready for use, batteries are charged, a good location for portable operation has been identified in the hills behind Livorno, so now it is only matter of waiting for good weather conditions, hopefully in the coming week.


Daniele IZ5WWB

IZ5WWB very first tx tests from JN53 next Sunday

Hi all,

unless blocked by higher priorities, I will perform my very first tx tests next Sunday in the morning from JN53 (portable operation).

Current plan is to use first a ground plane antenna (approx. 7.30-8.30 UTC) then a rotatable dipole (approx. 8.30-9.30 UTC for the N-S direction, 9.30-10.30 UTC for the E-W direction).

The G0UPL Ultimate2 beacon kit will be used for transmission, continuously running following sequence of modes/frequencies, with callsign IZ5WWB:

WSPR 28126,850 kHz
QRSS (FSKCW) 28000,850 kHz
CW 28280,800 kHz

Daniele IZ5WWB

Record night in 160m wspr "across the pond"

After days and days of a sad propagation 160m comes alive. And how! there were exactly 760 DX spots between NA and EU from 09:24z(11/28) to 08:22z(11/29). The last similar event dated of October 13 with 350 dx spots "across the pond". DX Stations were: WB5WPA, K9PAW, K9YWO, K9AN, W3PM, N2NOM, VA3MW, KC2STA, G8DYK, G8HUH, G3ZJG, G8JNJ/A, PA0O, PA0HCK, ON7KB, PA3MET, PE1MPX, PI4THT, OZ7IT, DK6UG , F59706.

About my 160m wspr challenge, i spotted a new one KC2STA (Dan). With this one, count of my NA 160m challenge is up to 19 stations

Thank you to all, Patrick, F59706

New to WSPR, initial observations

OK, just two days of experience with WSPR.

1. On 20 meters with 1 watt and a Miracle Whip INDOORS, pretty cool what can be accomplished.
2. On 30 meters with an outside end-fed half wave wire at 20 feet high horizontal, 0.5 watts, very impressive.
3. Not much results on 20 after sunset.
4. 30 is ALWAYS open to somewhere.
5. The database queries are cool.
6. Is there any analysis being performed on the data, like what was done with PropNETPSK several years ago?

Magnetic Loop Antenna

I have been using a Magnetic Loop Antenna from Alpha Antennas and I'm very impressed with the performance of it. I have this inside my shack and it has done almost as well as my full wave 160 meter loop at 40'. Check out my spots for the past week 11/27 on 20 meters.

Magnet Loop Antenna

160m 26-27.11.2013.Thank All

160m Antennas - Beverage toward Europe

Just want to advise our 160m operators that I currently have up a 160m Beverage antenna and a 1/2 wave Inverted V dipole.

As the Beverage is an RX only antenna, what I am doing is running the Inv V for the USA guys (TX/RX) until I head to bed, then switching over to the Beverage to run RX mode till sunrise.

The Beverage is a full wavelength on 160m, so 160m in length. It has been set up aimed roughly in Europe direction, about 310 deg. In theory, it should have a good front lobe toward Europe of about 60 deg. Its only about 1.1m above ground, and does cut out lightning static quite significantly. There could also be issues with Kangaroos hopping into the wire at night time, though I have been out and scared a few away last night and tonight. So if suddenly I stop hearing Derek, you could assume its been damaged.
The wire is 0.6mm single strand, insulated. I only have up about 1/2 the number of supports I wanted to run to hold the wire up, but its actually looking not to bad even with the supports at 20m intervals.

Last night was the first test run and saw good reports for Derek VK6DZ's signals, even though technically he is off the side a bit. There were no EU signals heard, but that could just be conditions.

Hope to hear some of you, good luck.

boujour a tous

du nouveau ici
j'ai un KX3, vraiment un super tx et biensur en QRP

je vais le servir en wspr sur 160 m
soit avec 5w ou 2 w

via un signalink usb et le cable pour le KX3

le tx chauffe vite a 60 c hi

merci pour tout rx de votre part

noel arrive bonne fête

hb9hfr michel

du nouveau ici


I have been running 1mW on 40m WSPR for the last couple of days and getting spots from over 2000km away. Such has been the success I have decided to go lower in power and will be going down another 10dB to 0.1mW. From the reports so far at the 1mW level I think I can go much lower still, but I'll try it in stages.

The WSPR program only allows power settings down to 1mW (0dBm) and I will have to keep that setting even though I am at lower power. Output power levels have so far been confirmed by measurement with an oscilloscope. It will be interesting to see how far I can get on these low levels.




Well, I just got my Raspberry Pi to listen to WSPR stations for me.
Wahoo! Now I get my laptop back for other things.

Why i am doing WSPR

I like to get a statistical feeling about conditions on 80m.

What i need is a receiving and a transmitting station which are not changing.
It will work all day for about 8 weeks.
After that i make graphs of the signalstrengths over that time.

I do not like to use my normal tranceivers for it, because i do not like
them to work for a 8 weeks continious. ( thunderstorms - lightning problems)
So i build some receivers and a transmitter.
I used the circuit diagram of the Bitx20a as an example.
I build all in so called Manhattan style.
All oscillators are a si570 chip which i do program with an AVR microcomputer.
So the frequencies are very exact and stabil.

This days i am just testing the apparatus.

Ham Radio Balloon on 7, 10 and 14 MHz in WSPR

This Saturday, November 16 Australian radio amateurs will launch a HF high altitude balloon, PSB-5, transmitting WSPR, JT65, THOR and Slow Scan Digital Video (SSDV).

1mW experiment

I'm currently transmitting on 20m, 15m and 10m using 1mW.

So far, my best spot is 1,065km, equivalent to >1,000,000 km/Watt ! (Thanks to SWL Dan I1-12387)

2013-11-13 07:28 G0LRD 14.097055 -23 0 JO02ac 0.001 I1-12387 JN44ln 1065 138

Ultimate 2 QRSS Beacon now on 40m and 20m

My Ultimate 2 QRSS transmitter ( continues to work great. I just received and assembled filter modules for the 40 meter and 20 meter bands, in addition to the 30 meter filter I already had. I'm picking up lots of WSPR reception reports on both bands. I also updated the firmware to the latest 2.06b version (using my Bus Pirate to program the PIC chip in-circuit). The new firmware allows transmitting on up to 3 different frequencies and modes.

Hans Summers is now shipping the Ultimate 3 version ( which has a backlit LCD and will work with an upcoming relay-switched Low Pass Filter board that will allow transmitting on up to 6 bands without having to change filter modules.

G to VK with <50mW on 10m

I've been running WSPR on 10m for a couple of days using a Hans Summers U2 transmitter feeding into a Sirio Gain Master aerial which is a vertical dipole.

The transmitter doesn't generate much RF on 10m - I set the power figure in WSPR mode to indicate 50mW although in reality, it's probably less than that. The needle on my Daiwa NS-660P with 15W FSD is moving barely a needle width from the bottom stop. If I had to estimate, I'd say I'm running between 20mW and 30mW through 20m of RG213 into the aerial.

This morning I was very pleased to see the following spot:

2013-11-12 09:58 G6NHU 28.126056 -27 0 JO01ou 0.05 VK6XT OF86td 14654 94

According to the WSPR-Watch app on my iPhone, that works out as 293,080 Km/Watt (see attachment).

Which impressed me!

73 Keith, G6NHU

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