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.

Early departure in 160m wspr

I spotted this morning, with a little advance, my first North American station of my new season in 160m WSPR, as usual in my gray line:
2013-08-24 03:54 VA3MW/P 1.838148 -22 0 FN04qm 5 F59706 JN07th 5930 56
2013-08-24 04:06 VA3MW/P 1.838148 -21 0 FN04qm 5 F59706 JN07th 5930 56
2013-08-24 04:14 VA3MW/P 1.838148 -17 0 FN04qm 5 F59706 JN07th 5930 56
2013-08-24 04:20 VA3MW/P 1.838149 -16 0 FN04qm 5 F59706 JN07th 5930 56
2013-08-24 04:30 VA3MW/P 1.838149 -17 0 FN04qm 5 F59706 JN07th 5930 56
2013-08-24 04:36 VA3MW/P 1.838149 -19 0 FN04qm 5 F59706 JN07th 5930 56
2013-08-24 04:42 VA3MW/P 1.838149 -28 0 FN04qm 5 F59706 JN07th 5930 56

I hope to do a great new season (27 unique NA call on the previous season) and see again all familiars of this nice band.
73 to all, Patrick, F-59706

Just getting back on!

For the last year or 2 I have played with WSPR, but never had a dedicated WSPR station. I have one set up now and will let it run for when I am home. Its tough going from a non-digital mode station to a digital mode station and makeing sure all settings are correct, as far power and audio levels. I am using an MFJ-249 radio interface card as the interface. This is a little dated, since it interfaces VIA serial port as the PTT.

Hope to hear everyone on the air!

Matt
NG2Q

Crossed Field Loop "CFL"

Used the antenna analyser tonight to setup the CFL on 7.040Mhz , then just for a quick test I left it running on RX on 7Mhz.
Most surprised to hear signals from around Europe, the CFL is just 40cms in diameter and its just plonked on the shelf next to a netbook and softrock ensemble, and all at ground level. Should prove an interesting test when its mounted on the house apex at approx. 5 meters.

Regards Paul..

Sample Rate Synchro between VAC and Windows 7/ Vista

I found this article/ adjustment to be very helpful, I had a sideband/harmonic about 100KC high that I could not get rid of, this sample rate synchro procedure cleaned it up. Thought it would be a good idea to share with the group, in case other's are having similar prob's.

73, John

Anyone transmitting below 10,140,100 Mhz (30m) ?

Folks.

As I understand it the 30m WSPR subband ends at 10,140,100
although I know that the WSPR software includes a little bit
of overlap by default.

Unfortunately QRSS activity tends to start below 10,140,100Mhz
and there seems to be a few users using WSPR below the accepted sub band.

It may be a TX error and users not aware of it, but it would be nice
if WSPR'ers could bear in mind the QRSS activity below 10,140,100 please.

Kind regards,

Andy

WSPRing overnight

Ultimate 2 QRSS kit 100mW into G0FAH dipole up 45'. 20m 14097090

Welcome

Thank you for looking me up on here but please do go look me up on qrz.com and leave your call sign in the web button.
73

WSPR/CW beacon test operation

10.8.2013 I have started a test operation of simple homebrew DDS beacon. It currently operates on 6m only (WSPR and CW FSK 50.045 MHz) using 5W to 6 ele Yagi (heading mostly NW) from my home QTH but it is able to work on all HF bands as well (planned 80 and 17m), I will try it later. Plan is to move it to more convenient location later. Time schedule: there is a table with 10 timeslosts, each lasts 2 minutes. There are defined a mode (WSPR or CW) and freq for each slot. The timeslots are processed cyclically (that means sequence repeated every 20 minutes).

Compact Aerial Test

Hoping to be able to do some tests on 40 meters starting in September, running small compact aerials such as the CFL and EH etc

regards Paul.

Costa Rica info.....

Costa Rica TI (tango india) is a country with a few, but dedicated,
amateur radio operators. We enjoy WSPR-PSK-CW, always learning and helping... any questions??
See FACEBOOK RADIO CLUB DE COSTA RICA
73, TI3/AB4AW Rich email ab4aw@hotmail.com

PySDRVNA: VNA Software for RXTX Ensemble Users

I enjoy experimenting with antennas and using WSPR to evaluate antennas has been an invaluable tool. I also use the SoftRock RXTX Ensemble under Linux and recently wrote some software that allows you to use the RXTX Ensemble as a VNA for reflection measurements. This has also been an invaluable tool for antenna experiments. You can find the VNA code at: http://pysdrvna.googlecode.com

Testing the Mini Whip with WSPR

I've been impressed with the mini whip antenna used at the main websdr station: http://websdr.ewi.utwente.nl:8901/ You can find out more about the mini whip at http://dl1dbc.net/SAQ/miniwhip.html Recently I had the chance to borrow a mini whip antenna and test its performance with WSPR. The results from the 30M tests were interesting:

Attic Dipole at 6M height: 820 spots, 174 farther than 4000km

MiniWhip at 3.5M height: 736 spots, 188 farther than 4000km

This was for the same ~20 hour period. The attic dipole had the most WSPR spots, but most of those were of fairly local stations. As expected from theoretical models, the dipole has better high-angle reception when compared to a vertical. The mini whip had the most distant spots. It has slightly better low angle reception compared to the dipole, again as expected from models comparing close to the ground dipoles and verticals. When you look at the actual SNR db numbers reported by WSPR, you can see local signals are clearly stronger on the attic dipole during the day. As night comes, the two antennas produce more comparable spot strengths. The fact that the mini whip actually had more distant spots was surprising and very encouraging.

U2 takes to the air down under

Have just got my Ultimate 2 WSPR beacon running this afternoon. Currently it is lying on the table here in the shack. Power supply at the moment is 4 x 1.2v NiMH AA rechargeable cells. I am running the PA at 4.8 volts also. I fitted all the BS170 fets so the final has 3 in parallel. Measuring about 300mW into the feedline.
How's it getting out ? I have it on 80m at the moment and the first spot was from VK1KF receiving me at -20dB S/N, a short hop of 2890Km. Not using any GPS time correction yet but that will happen later this week all being well
73
Rick

Greetings

Inviting all to sidetrack a little from WSPR my website : vk6xt.com

Saludos

Les invito a visitar mi sitio www.ti2wmp.com

VI100ACT on 40m

I can use trhge special call VI100ACT on 40m until August 7 2013. Since that call cannot be used in WSPR I will use my own call VK1WJ and all contacts mane in WSPR count also vor VI100ACT. Paper QSLs only for VI100ACT please!

HVT vs Tatty-Tenna TX

HVT-400 mobile ant

12:48 9A/DD5CF 10.140248 -23 0 JN75gg 0.5 DJ2RD JO40cc 716

Tatty-Tenna

13:10 9A/DD5CF 14.097173 -25 0 JN75gg 0.5 SV8QG KM39gc 1201
13:10 9A/DD5CF 14.097157 -11 0 JN75gg 0.5 DC8SE JN48xi 489
13:10 9A/DD5CF 14.097162 -15 0 JN75gg 0.5 SP5ISZ KO02md 900
13:10 9A/DD5CF 14.097124 -19 0 JN75gg 0.5 DM3FML JO60ux 638
13:10 9A/DD5CF 14.097144 -25 0 JN75gg 0.5 DC3RJ JN59 540
13:10 9A/DD5CF 14.097153 -23 0 JN75gg 0.5 PA2WO JO21uf 930
13:10 9A/DD5CF 14.097151 -23 0 JN75gg 0.5 LA9JO JP99gb 2655
13:10 9A/DD5CF 14.097147 -17 0 JN75gg 0.5 PI4THT JO32kf 955
13:02 9A/DD5CF 14.097173 -23 0 JN75gg 0.5 SV8QG KM39gc 1201
13:02 9A/DD5CF 28.126130 -21 0 JN75gg 0.5 OV1MK JO65bb 1102
13:02 9A/DD5CF 14.097158 -17 0 JN75gg 0.5 DC8SE JN48xi 489
13:02 9A/DD5CF 14.097173 -23 -1 JN75gg 0.5 G4CUI IO93fi 1467

HVT vs Tatty-Tenna Rx

HVT-400 Multiband mobile ant.

12:58 SV8ARJ/1 14.097085 -13 1 KM17uw 5 9A/DD5CF JN75gg 1115
12:58 DM3FML 14.097137 +5 0 JO60ux 5 9A/DD5CF JN75gg 638
12:54 G4CUI 14.097044 -14 0 IO93fi 1 9A/DD5CF JN75gg 1467
12:54 G8VDQ 14.097067 -16 0 IO91um 5 9A/DD5CF JN75gg 1293
12:54 DM3FML 14.097137 +2 -1 JO60ux 5 9A/DD5CF JN75gg 638
12:52 HB9BDJ/P 14.097192 0 0 JN36li 5 9A/DD5CF JN75gg 600
12:50 G4CUI 14.097044 -15 0 IO93fi 1 9A/DD5CF JN75gg 1467
12:50 G8TDL 14.097115 -32 0 IO91ok 0.5 9A/DD5CF JN75gg 320
12:46 G4CUI 14.097043 -9 0 IO93fi 1 9A/DD5CF JN75gg 1467
12:46 ON7KO 14.097110 -16 -1 JO21ce 1 9A/DD5CF JN75gg 1008
12:46 SP5ISZ 14.097118 -17 0 KO02md 10 9A/DD5CF JN75gg 900
12:46 OZ7IT 14.097186 -15 0 JO65df 5 9A/DD5CF JN75gg 1119

Tatty-Tenna
13:08 G4CUI 14.097046 -11 0 IO93fi 1 9A/DD5CF JN75gg 1467
13:08 ON7KO 14.097112 -8 0 JO21ce 1 9A/DD5CF JN75gg 1008
13:08 SP5ISZ 14.097122 -1 0 KO02md 10 9A/DD5CF JN75gg 900
13:06 G4CUI 14.097047 -13 0 IO93fi 1 9A/DD5CF JN75gg 1467
13:06 SV8ARJ/1 14.097086 -4 1 KM17uw 5 9A/DD5CF JN75gg 1115
13:06 DM3FML 14.097139 +6 0 JO60ux 5 9A/DD5CF JN75gg 638
13:06 OZ7IT 14.097188 -22 0 JO65df 5 9A/DD5CF JN75gg 1119
13:04 G8VDQ 14.097069 -6 -1 IO91um 5 9A/DD5CF JN75gg 1293
13:04 HB9BDJ/P 14.097194 -17 1 JN36li 5 9A/DD5CF JN75gg 600
13:00 G4CUI 14.097046 -6 0 IO93fi 1 9A/DD5CF JN75gg 1467
13:00 G8TDL 14.097116 -26 0 IO91ok 0.5 9A/DD5CF JN75gg 1320

What are other WSPR users doing about powerline noise

I have terrible constant powerline noise from a pole about about 1000 ft from my small city QTH (40M through 15M). Aside from getting the power company to fix it (that could take a while), what are WSPR users doing to mitigate powerline noise from reaching their receivers, especially for the small kits and QRP setups. I know that SDR approach can help for mild cases, but what about more extreme cases?

My setup is a TS-690s with a 2.8KHz (8.33MHZ IF) filter and a 250Hz (455KHz IF) (for WSPR). The Kenwood noise blanker is very effective at reducing the powerline noise and I can spot some stations with the noise blanker on but I don't think I am getting the best SNR possible. I would like to block some of the pulses from reaching the receiver, possibly with a line-synchronous noise blanker? I tried the MFJ-1026 but it is not a viable option as I cannot put up another decent antenna for noise pickup and it seems to distort WSPR signals worse than the internal NB

What effect is the internal noise blanker or a line-synchronous noise blanker having on the WSPR signals and SNR?

What can be recommended for stand alone Transmit/Receive kits/sdr/etc that can deal with powerline noise. My preference is for analogue approaches, multiple band operation, but simplicity of setup is key.

My antenna is a homemade multi-band vertical dipole for 40M - 6M, axially fed. it should also have a fairly low angle of radiation for 17M and above average dipole gain for 30M and 20M. the bottom is 5ft off the ground and the length is 39 ft.

If anyone is interested in setting up a sked for comparing antennas at the same time, especially verticals I would be interested in comparing spots, determining antenna efficiency etc. I know comparing antennas with WSPR is trivial, but it can be useful.

One hour of Australia 160m

2013-07-27 18:54 RX3DHR 1 838173 -25 0 K094ks 5 VK7DIK QE28sf 14664 106
2013-07-27 18:44 RX3DHR 1 838167 -12 0 K094ks 5 UT7GH KN66hp 1004 203
2013-07-27 18:32 RX3DHR 1 838171 -24 0 K094ks 5 VK2DDI GF55hf 14444 96
2013-07-27 18:32 RX3DHR 1 838173 -27 0 K094ks 5 VK7DIK GE28sf 14664 106
2013-07-27 18:18 RX3DHR 1 838171 -20 0 K094ks 5 VK2DDI GF55hf 14444 96
2013-07-27 18:18 RX3DHR 1 838167 -14 0 K094ks 5 UT7GH KN66hp 1004 208
2013-07-27 18:06 RX3DHR 1 838170 -17 0 K094ks 5 VK2DDI GF55hf 14444 96
2013-07-27 18:06 RX3DHR 1 838167 -16 0 K094ks 5 UT7GH KN66hp 1004 203
2013-07-27 17:52 RX3DHR 1 838167 -22 0 K094ks 5 UT7GH KN66hp 1004 203
2013-07-27 17:52 RX3DHR 1 838170 -18 0 K094ks 5 VK2DDI QF55hf 14444 96

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