Showing posts with label 500kHz. Show all posts
Showing posts with label 500kHz. Show all posts

Thursday, December 3, 2009

Listening on 500kHz

Most of the day my receiver (R-2000) was tuned for WSPR on 500kHz, my lonely red flag shows up on the LF/ULF WSPR map near Seattle. There is only one transmitting station, N4QLB, in the US - I was hoping to a least log it. But no Joy.

Listening in Seattle,  .  .  .  .   .


UPDATE:
I listened to 500kHz for two days - nothing but four bogus spots with bad CALLs and/or Grids -  so, now Rx QSY to a higher band.

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Sunday, October 25, 2009

A WSPR Transmit Engine

Among my many other projects, I have been thinking about building a WSPR Transmit Engine, a self contained module, that could be paired with a (simple or complex) Oscillator/Transmitter on any band.

I really want to follow G3XBM and G4ILO's leads and get on other interesting bands with a simple configuration.

My initial goals, desires or ideas for this modulator/controller are:
  • Self contained module
  • PIC or other controller
  • Simple rotary Input for CALL, Grid and Power
  • Display for interaction
  • Maybe an output to set Power on Transmitter
  • Provide Audio FSK and/or DC level for direct modulation
  • Transmit Control as necessary
  • Receiver for time tick from (WWV or other) for transmit timing, maybe using the TX antenna?
  • Easy connection to simple Oscillator/Transmitter
  • Simple low Battery power requirements
  • Built with simple and easy to obtain parts
  • Easy to reproduce in Manhattan, Ugly or SMD Style
  • Published Art Work, Source Code and Parts List
Does anyone have any other ideas to consider or as a starting point?


Update1:

Here is what I think I know - more details to be added as they are known - please help if you can.



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Thursday, October 15, 2009

WSPR Receive on 500kHz

Now that I can run two WSPR stations, one in Tx/Rx and the other in Rx only, I started looking around at other Bands to explore.

I have a few passions; Minimalist Systems, 30 Meters, VLF/LF/MF and K Band.  The 500kHz (600 meters) or the like is something that I have always wanted to explore. G3XBM has rekindled my interest in Med Freq, even though I can only receive. Maybe someone local to the Pacific Northwest has the same interest, I will leave the WSPR receiver on this Band a few days.

Who knows, maybe I will receive WAPR over the pole from Europe.

I will have to look up the Regs for US Ham use of the 600m band, and the lower frequencies in general.

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