We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissible in your locale.

Author Topic: Grey line map (real time)  (Read 6443 times)

Offline NJQA

  • Sr. Member
  • ****
  • Posts: 322
  • Virginia
    • View Profile
Re: Grey line map (real time)
« Reply #15 on: February 05, 2020, 1156 UTC »
This is something to be aware of as some propagation prediction programs are using old SSN lookup tables.  This was recently mentioned here:

https://swling.com/blog/2020/01/ham-cap-and-voa-prop-fixing-ssn-look-up-files/

Offline pjxii

  • Jr. Member
  • **
  • Posts: 21
  • SW Florida
    • View Profile
    • Email
Re: Grey line map (real time)
« Reply #16 on: July 12, 2020, 2105 UTC »
Interesting. I see that it comes with 12 slides for each month of the year. Not sure it would be easy to find though.

I have two of those, the earlier monochrome and later color version. They're invaluable to me as I don't use a computer at my radio desk (I'm very old school). The early one came with an overlay for the Great Cirlce path at 40* North, but now I live at 25* N so...
They turn up on eBay from time to time. Not expensive.