Hi Stefan ! but most likely there is a LOT of QRM when driving... It depends on the type of car. While testing /mobile on 160m I did not hear QRM from my 23 year old Diesel. At the Autobahn, far away
Hi Stefan, LF ! For the suitability of "(ogg) vorbis" format as a transport for antenna (or IF) signals please consider reading the articles at english or german Wikipedia about the technical details
Hi Mike ! Your screenshot shows Stefan's Callsign as "<DK7FC>". This means it was (identified as) one part of a multi-part transmission. To correlate those sequential transmissions WSPR uses a hash-t
Hi Martin, Markus ! The soundcard has to be set to 48000 S/s at the hardware/driver level, this is vital! (Windows standard is 44100 "Hz", DO NOT USE THIS FOR WSPR-X !) prerequisite : close all progr
Hi Martin ! Did we mention to NOT install WSPR-X in the C:\Programs... directory ? You should try to install it in C:\users\<Martin>\documents\WSPR_X (or the like). This is one of the directories whe
Hi Mike ! This file is never uploaded (to the WSPR servers), so for what reason we should keep it small? HNY & 73 de dg3lv Tobias Am 03.01.2016 um 17:58 schrieb Michael Sapp: Stefan & All: If you use
Hi Andy ! I do have an upconverter, but that needs I/Q drive and doubt the software generates that, What about trying to use the good old M0KGK SDR program in between as an I/Q generator from the aud
Hi Domenico, MF ! Thank you for a nice JT9 QSO yesterday. There was some deep QSB during the QSO, but we did it ! 1532km JO53GV to JN80NU, my ODX on JT9. My last attempts for a QSO with you were at D
Hi Domenico, Szigy, MF ! Thank you for your invitation to the JT9 activity week (/Friday). The resonance of participants was enormous, I had to work almost like contest style to work most of them. Fr
Hi Szigy, Rik ! Most stations declare their ERP, not PA output. Yes, and as a rule of thumb you can typically interpret values of 1 Watt or less as an E(i)RP level, whereas higher numbers of declared
Hi John ! The website owner(s) can be found at : http://www.whois.com/whois/wsprnet.org There is a lot of information on how you can get into contact with them. It would be better hamspirit to help t
Hi Vinny ! There was a signal at 475.802, the level was ok, but it had a drift of 3 Hertz coming from 475.799. This is way too much for a successful decode of WSPR-15. If it was your signal, you have
Hi Vinny, MF ! Good job ! Your signal was ok and loud last night. Congrats ! There could have been an additional WSPR-15 station on 475.807 at 22:00h to 22:30h, but it was too weak to be decoded at m
Hi Wolf ! Please have a look at : http://www.ftdichip.com/Products/ICs/FT4232H.htm it says : "RS232/RS422/RS485 UART Transfer Data Rate up to 12Mbaud. (RS232 Data Rate limited by external level shift
Hi Wolf ! The PIC16F1783 has an internal 4x PLL, which could be used in conjunction with a typical 7.3728 MHz (external) crystal to gain 29.491200 MHz Fosc for your PIC. This is just 16 times the bau
Hi Clemens ! Please have a look at the website of Manfred, XQ6FOD to understand the necessity of this bifilar supply choke at a push-pull PA: http://ludens.cl/Electron/mosfetamps/amps.html ("Output a
Hi Clemens ! I was referring to a *multiturn* center tapped winding. A multi-turn (e.g. 2-Turn) primary of an PA output transformer has several disadvantages in real life: 1. The ohmic resistance of
Hi Paul, Stefan ! As Stefan wrote, the Amidon T106-2 iron powder cores do a good job at 475 kHz and 100W out. See attached foto of my lowpass filter. Data : 3 x T106-2, 6 x 6800pF capacitor Wima FKP1
Hi Markus ! reading this, thank you for a truly handmade JT9-QSO ! I think this is what they call a "long delayed echo" on shortwave : your CQ at 22:03h and 22:05h, my anweres at 22:04h and 22:06h, t
Hi Markus, MF ! There are some more sources of signal-purity-problems : Some high-Power PAs just use rectified mains supply (w/ or w/o transformer). They do not use any linear regulation to stabilize
