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Recently installed the ICOM FL53 (250HZ) CW filter in the IC703. This works very well
and it's passband sits nicely centered at 1500 hz with zero IF Shift. This is very
convenient for WSPR QSO mode in USB with WSJT 7 as this is the default center for this mode.

I will be operating from my QTH on the island of Fuerteventura from January 13 - January 25.

This is a long overdue project.

Using the downloadable CSV data, it's pretty trivial to load the data into R for some decent analysis. I was able to load all 3+ million spots into a data frame, and I'm going to start to try to learn some things. My first pictures are trivial histograms of Received SNR, Transmitted Power, and SNR-Power (un-normalized path loss). These are across all 30m spots to date.

Hi all,

I looked in the database today and found sometimes a strong difference in receiving and transmitting level of some stations over the last months.

Can it be that the spotted TX power level in the database is not correct....

I am using ERP Scale ...5W ERP means around ...37dBm

73 de michael DG0OPK

Hello I would be interested to know what the operators on 160 are using?
I am currently loading up my hbrew Doublet,,, but plan to experiment with some other variations...

73 Rodger
G4MQL

I switched radios today to try my Tentec Corsair 2 on WSpr
and noticed it would not receive WSPR unless I received
on SB-R... Strange, I thought. Anybody else noticed
anthing like this? N9BPE

Having seen and read several posts regarding the puzzle of WSPR QSO mode operation, I found it puzzling that I hadn't had a lick of trouble figuring it out--now, I'm no rocket scientist so I figured there must be more to it--perhaps I was missing something.

Now I'm convinced that having used the JT65 mode in WSJT for a while prior to trying WSPR set the stage for the largely undocumented operation of WSPR in ver7.

What's the frequency for the 60 meterband?

73 de CX2ABP

is somebody activ on 136 khz ????
dial freq. ????

73 de IK4GBU - Valerio

Hi Folks!

Recapping on Frequency Accuracy
As you can see from previous entries in my blog I have been delving into why WSPR and ARGO report different audio frequencies with an error of 17Hz at 1500Hz.

If you look at my blogs below you will see I have been puzzled by a discrepancy between what ARGO and Spectran reports as the frequency of an audio tone supplied and what WSPR reports.

I have FINALLY figured out what is happening (I am sure others wiser than me already know this - but I didn't).

I believe the following database entries are bogus as they occurred during a period of severe mains line interference.

2008-12-24 21:36 O75YN 10.140273 -24 1 DM03 +20 0.100 VK2SRO QF56ik 12006 7460
2008-12-24 21:28 O89RRF 10.140174 +9 0 LK77 +47 50.119 VK2SRO QF56ik 11592 7203
2008-12-24 20:54 AF0DD 10.140256 -23 0 PL88 +23 0.200 VK2SRO QF56ik 7051 4381
2008-12-24 20:54 AC8KCS 10.140284 -17 0 JR94 +47 50.119 VK2SRO QF56ik 14141 8787

I have some extra equipment I wasnt using so I decided to make use of it on WSPR. I noticed there isnt anyone else on full
time from Florida and I seem to be hearing as much as or more than anyone else on 30 meters most of the time. Also there seems
to be a lot of people hearing me. I am not sure if this is because of my location or because of the equipment I am using but
I dont think I am running anything special here. I am running a Kenwood TS-440SAT backed down to 5 watts. It has a 1.8khz

I got schooled in JT65 today.

Decoded several JT65a transmissions, one from ZL3PAH, whom I was excited to complete a qso with and put out a weak 6 or so watt response. Little did I know at the time that the club rig at KL7AA is incapable of upper side band with JT65.

The next day after my initial JT65 emissions I got on the chat/sked page for JT65 Terrestrial at webpage. With help from Armando, LU8WAG, Barry, VE3CDX/W7, as well as test emissions with NI0B in Nebraska and several others the diagnosis revealed itself.

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