jks

About

Username
jks
Joined
Visits
30,171
Last Active
Roles
Member, Administrator, Moderator
Points
220
Location
Tauranga, New Zealand RF82ci
Callsign
ZL4VO/KF6VO
Additional information
KiwiSDR support email: support@kiwisdr.com
  • Large masked band segments

    Although I think public Kiwis with ham-band-only frequency masking is kind of annoying, I've had several requests to make this easier to setup. So in the documentation describing the feature there is a .json or .csv file you can use with the admin/DX tab "Import JSON/CSV" button to do so: http://kiwisdr.com/quickstart/index.html#id-user-marker-masked

    studentkra
  • v1.682

    From the CHANGE_LOG file:

    v1.682 May 19, 2024

      Fixed problem that prevented the new ipset+iptables blacklist filtering from actually working.

      Filtering was occurring (less efficiently) in the Kiwi server instead. (thanks Stefan HB9TMC)

       

      Fixed problem related to the restoration of the auto proxy configuration after a re-flash.


    HB9TMC
  • Hackers be hacking..

    v1.682 fixes the problem reported by @HB9TMC where ipset/iptables wasn't filtering properly (but the Kiwi server was as a backup).

    But I also noticed something important. On the admin network tab, the "local blacklist" section where you can enter your own ip addresses and ip ranges: Be careful to not enter invalid or duplicate entries. Especially duplicates. Because processing of the local list will terminate at the point it finds a duplicate. It's a pain for me to detect this condition and report it back to the admin interface. I have much more important things I need to be working on. So this warning will have to suffice.

    Consider this local blacklist entry:

    1.2.3.4/32 217.150.74.0/16 217.150.75.255/16 5.6.7.8/32

    There are two problems here. 217.150.74.0/16 is deceptive because the /16 means the bottom 16-bits are considered the wildcard host address part and should really have been specified as 0.0 as in 217.150.0.0/16. That means the following 217.150.75.255/16 is also wrong and also considered as 217.150.0.0/16. Hence two identical entries in a row causing an error which prevents the 5.6.7.8/32 entry from being added to the blacklist!

    So be careful when constructing your lists. Use a site like https://www.ipaddressguide.com/cidr to check your IP range for proper CIDR representation.

    Yogicat
  • Problems with frequency stability

    You only have 3 sats in the az/el display which is the bare minimum to maintain a lock (assuming they're strong enough to be tracking & decoding properly).

    What happens if you turn off GPS, do a manual calibration, and just let it free-run?

    wd4elg
  • Please protect your KiwiSDR 2 from the high-level RF fields of nearby transmitters

    Please make sure your Kiwi is adequately grounded. So the antenna input protection circuitry has a path to drain any charge it is intercepting. Ideally this would be on the antenna coax near the RF in SMA connector. Or from the Kiwi metal case.

    The ground connection from a switch mode power supply is likely not earth grounded and the Ethernet cable is transformer coupled with capacitive bypass.

    F5AFYNate_R