jks

About

Username: jks
Email: fhccbeg@support@kiwisdr.com
Joined: February 2016
Visits: 34,036
Last Active: 1:10AM
Roles: Member, Administrator, Moderator
Points: 452

Reactions

645Helpful574Awesome

v1.803

jks

February 14

From the CHANGE_LOG file:
v1.803 February 14, 2025
  Added admin password reset scheme. See KiwiSDR forum for discussion.

  Iframe extension
   &
… (more)

From the CHANGE_LOG file:
v1.803 February 14, 2025
  Added admin password reset scheme. See KiwiSDR forum for discussion.

  Iframe extension
    Show all 16 instances in user extension menu. (thanks VK3KHZ)
    Prevent duplicate menu names from being setup. (thanks Steffen)

  SSTV extension
    Added support for modes:
      PD: PD120 (used by ISS) PD160 PD180 PD240 (but not PD290)
      Robot: R12
      Wraase: SC60
      Pasokon: P3 P5 P7
      FAX480

  Fixed bug preventing proxy client start if not running in certain situations.

(less)
v1.700,701

jks

September 2024

This will be the last update for a while. I'm taking some time off to reassess my options.
From the CHANGE_LOG file:
v1.700 September 17, 2024
  User interface:

… (more)

This will be the last update for a while. I'm taking some time off to reassess my options.
From the CHANGE_LOG file:
v1.700 September 17, 2024
  User interface:
    Adjusting the passband edges should now work in most cases on mobile devices.
    If it doesn't remember that there are other ways to adjust the passband including sliders
    on the audio tab.

    When adjusting the passband edges if the cursor wanders above or below the frequency scale
    adjustment will continue to work. However the tooltip displaying the passband numeric
    values continues to only appear when the cursor is positioned over the passband edge.
    Remember that you can only adjust the edges when zoomed in far enough that the passband
    color is green instead of yellow.

    On narrow screen devices top bar now scrolls horizontally so all items can be accessed.

    Mobile devices: sliding the passband to the screen edges causes the frequency scale to pan.

    FT8/WSPR:
      Added QO-100 satellite frequencies to extension and autorun menus.
      Added FT8/WSPR V/UHF DX label entries to community database.

    When the frequency offset is setup for operation with a greater than 1 GHz downconverter
    the frequency entry box overflows due to the extra digit(s) displayed. There wasn't really
    a good solution for this. Except that now if the cursor starts out inside the box the
    keyboard left/right arrow keys will scroll left/right across the digits. As opposed to
    tuning the current frequency as the left/right arrow keys normally do.

    ALE extension:
      Added "UN MINURSO" to milcom frequency list. (thanks M0HGK)
      Added "MOROCCAN AF/Civil/Police/Navy" services to milcom frequency list. (thanks Mark W)

  Admin interface:
    The top bar (tab selection) and any status/error messages are now fixed at the top of the
    page and no longer participate in any scrolling. This eliminates, for example, the page
    "jumping back" to the top when you change a setting that requires a restart.

    Config tab:
      New menu "Frequency scale presets" has some pre-defined values that automatically puts
      the correct entry in the "Frequency scale offset" field. For example, the menu entry
      "144 => 28 (2m)" puts the value 116000 in the offset field which would map 144-148 MHz
      to 28-32 MHz (assuming 32 MHz mode selected). We can add to this menu as necessary.

    Network tab:
      Better user interface behavior during "DHCP/static" and "Auto add NAT" changes.

    Extensions tab:
      WSPR option "Log spot debug info?" now produces a correct debug message in the log.
      For example, WSPR UPLOAD: wsprnet.org said: "1 out of 1 spot(s) added"

(less)
v1.694 [hopefully a working version of the failed v1.691,692 update]

jks

July 2024

Okay, let's try this update again. Hopefully it won't cause your ATM machine to stop giving you cash.
v1.694 [hopefully a working version of the failed v1.691,692 update]

jks

July 2024

From the CHANGE_LOG file: (part 3/3)
  Admin config tab: (thanks Tremolat, G8JNJ, Ben, et al)
    New checkbox "Show user names to user connections". When checked will
… (more)

From the CHANGE_LOG file: (part 3/3)
  Admin config tab: (thanks Tremolat, G8JNJ, Ben, et al)
    New checkbox "Show user names to user connections". When checked will show "(private)" in
    place of usual user name displayed in the user tab of the main control panel. The user name
    is still shown on the admin status tab and /users URL query.

    New "initial value" menus for audio compression, display setup and option bar.
    (thanks HB9TMC, N6GN)

    By special request: Checkbox below WF cal slider to disable the automatic correction
    that is applied to the WF-min slider (3 dB per zoom step). It is not recommended that you
    set this option as it causes undesirable results. But it also provides a good learning
    opportunity why 3 dB correction is needed every time the WF bandwidth changes by 2x.
    Think SSB vs CW filters and why a narrower filter has a lower noise floor.

  Admin webpage and public tabs: (thanks ZL2LD)
    In an effort to simplify things there has been a general rearrangement and elimination of
    duplicate fields on the webpage and public tabs:

    1) The lat/lon, grid square and altitude fields have been removed from the public tab.
    When publicly registering a Kiwi these values are now taken from the webpage tab where they
    were duplicated. So there is now only one place where you need to set these values.
    See below for an explanation of the new "continuous update" feature.

    2) The admin email and antenna fields have moved to the webpage tab where they more
    properly belong.

    3) There remain two separate "location (name)" fields on the webpage and public tabs.
    Because you may want different location content to appear on the user page top bar
    versus what's displayed on your rx.kiwisdr.com public listing.

  Marine mobile grid square and lat/lon tracking: (thanks S50SVM/MM)
    All of the lat/lon and grid square fields now have the ability to be continuously updated
    by the GPS. So this includes the fields on the admin webpage tab as well as the FT8 and WSPR
    extension tabs. Previously this only existed for the WSPR tab. Although all the grid and
    lat/lon fields had (and continue to have) a button to do a one-time update from GPS.

    Setting continuous update will cause the values displayed on the user page top bar,
    rx.kiwisdr.com public listing, /staus query etc to update as the GPS returns a new location.
    In addition the updated values are used for FT8 and WSPR spots.

    For FT8/WSPR autorun when continuous update is active the grid is added to all the user
    lists where the decode count is shown. So for example in the user tab the previous
    "(N decoded)" becomes "(N decoded, GRID)". And when preemption is enabled for an autorun
    "(N decoded, preemptable)" becomes "(N decoded, GRID, pre)".

  SNR measurement:
    Measuring SNR on-demand will now work even though the periodic "SNR measurement interval"
    setting on the admin control tab is set to "disable". On-demand means the "Measure SNR now"
    button on the admin control tab or use of the "/snr?meas" control URL.

  Fixed the anti-HFDL monitoring countermeasure so it does not exclude the 80m ham band.

(end of document)

(less)
v1.683

jks

May 2024

From the CHANGE_LOG file:
v1.683 May 30, 2024
  Antenna switch: Fixed problems with Arduino Netshield backend script. (thanks N8OOU)

  CAT interface: Removed newline characters (
… (more)

From the CHANGE_LOG file:
v1.683 May 30, 2024
  Antenna switch: Fixed problems with Arduino Netshield backend script. (thanks N8OOU)

  CAT interface: Removed newline characters (\r\n) from end of each transmitted CAT string
  because it was reported to cause problems with some CAT software. (thanks DF6DBF)

  DX community database: UNID FSK signal at 61.84 is Inskip GBR. (thanks HB9TMC)

  Added entries to satellite table for Galileo gsat0227 and gsat0225 launched 2024-04-28 and
  currently under commissioning. (thanks F4FPR)

  We have now formally purchased a license to use the Kiwi logo from Hayes Roberts at
  bluebison.net. Previously we had an informal agreement with Hayes where he allowed us to use
  the logo provided we always included the domain text "bluebison.net" wherever the logo was used.
  By purchasing a licence we can now remove the text and make uses of the logo look a bit cleaner.
  Big thanks to Hayes for giving the KiwiSDR its logo identity recognized by SDR enthusiasts
  around the world.

(less)
v1.440: C-QUAM & channel queueing/camping

jks

March 2021

From the CHANGE_LOG file:
v1.439,440 March 14, 2021
  Channel queuing and camping:
    When all the Kiwi channels are busy(*) it is now possible to enter a queue to
… (more)

From the CHANGE_LOG file:
v1.439,440 March 14, 2021
  Channel queuing and camping:
    When all the Kiwi channels are busy(*) it is now possible to enter a queue to wait
    for the next available channel. The queue is FIFO and multiple parties can
    occupy the queue (your queue order will be shown).

    If all channels are busy you can also now "camp" on an existing connection and
    hear the audio of that channel. The only adjustment is to change the audio volume.
    Otherwise you experience all the changes performed by the owner of the channel
    (tuning, mode, etc).

    You can also be in the queue waiting for your own channel while camping.

    It is possible to use camping even if free channels are available by connecting
    using the URL parameter "camp", e.g. my_kiwi:8073/?camp
    You might want to do this if you know there is already a connection you want to
    camp on, but there are also free channels you don't want to unnecessarily occupy.

    In theory camping requires only slightly more resources because the audio stream
    is simply being duplicated and sent to the camper's network connection.
    The Kiwi admin can configure the maximum number of campers allowed, including zero.

    Later on we can look at adding audio-related features to camping that only require
    browser/javascript resources, hence place no additional load on the Kiwi server
    (e.g. S-meter, recording, audio FFT waterfall/spectrum display).

    These changes are complex and will no doubt have bugs and corner cases to fix.

    (*) or unavailable due to password protection on those Kiwis that have split
    public/private channels.

  Added C-QUAM AM stereo mode to SAM mode button which now cycles as: SAM/SAL/SAU/SAS/QAM
    Based on the work of Github user MaPePeR, see: github.com/jks-prv/Beagle_SDR_GPS/issues/395
    Remember that alt-click will toggle the mode buttons backwards, e.g.
    alt-click on SAM wraps back to QAM (faster than clicking forward on SAM 4 times).
    The same applies to the keyboard shortcut: shift-A is SAM mode forward to SAL
    alt-shift-A is SAM backward to QAM.

  Apply ITU region selection to band display (e.g. 40m ham band now stops at 7.2M for R1)
    It is possible this change will cause problems if extensive customization of
    the kiwi.config/config.js file has been made by the user. Please let us know if
    this happens to you.

(less)
Early demonstration of "channel nulling"

jks

November 2020

Here is a very early demonstration of using the Kiwi's synchronous AM detector (SAM) to subtract one sideband from the other. So a strong on-channel signal that is covering up a weaker one (either on-… (more)

Here is a very early demonstration of using the Kiwi's synchronous AM detector (SAM) to subtract one sideband from the other. So a strong on-channel signal that is covering up a weaker one (either on-channel or close by) can be attenuated. This is something I'm tentatively calling "channel nulling". There is much work to be done, but this is at least an existence proof.
In the first image there is a local powerhouse on 882 kHz and a much weaker carrier on 880 kHz can just be seen in the RF waterfall (green arrow).

In the second image "null LSB" has been selected from the new menu on the SAM line of the audio tab (bottom right). This puts the SAM detector in "SAL" (synchronous AM LSB) mode such that the USB component is not passed through to the audio. However, just prior to that the USB component is subtracted from the LSB, and, given the sideband symmetry of AM signals, the LSB is effectively nulled (to a varying degree). In the spectrum display above the waterfall you'll note the weak station carrier 2 kHz away now appears above the noise and, sure enough, a Spanish language station can be heard which was impossible previously.
The "spectrum display" in this case is not the usual spectrum data from the RF waterfall but rather a single-sided spectrum of the audio channel (hence symmetry either side of center). Note that an extension called "FFT" has been selected. This is going to be an expansion of the existing "integrate" extension to include more general audio FFT and spectrum capabilities.
The RF waterfall doesn't change between these two images because it is from the RF/IF path and not the demodulated/nulled audio.

This technique is not perfect. Due to the subtraction involved It depends on excellent USB/LSB signal symmetry which can be easily upset by frequency selective fading. A very common problem on shortwave and medium wave at night (at a time when you're most likely to want to use such a feature). But in the presence of fading the nulling effectiveness will vary and it just might give you the chance to "bag a new one" on MW if conditions are right.
As usual, many thanks to Youssef of AirSpy who recently pioneered this idea. A superior implementation is found in SDR# (the "Co-Channel Canceller" https://swling.com/blog/?s=co-channel). Maybe someday I'll understand how he does it (but probably not, lol).
(less)

$fractional_n$
v1.806

jks

March 12

From the CHANGE_LOG file:
v1.806 March 12, 2025
  Let DRM extension kick preemptable channels so it can run. (thanks VK6KCH)
  SSTV extension: Fixed Robot B/W modes and added
… (more)

From the CHANGE_LOG file:
v1.806 March 12, 2025
  Let DRM extension kick preemptable channels so it can run. (thanks VK6KCH)
  SSTV extension: Fixed Robot B/W modes and added R36-BW. (thanks N1NKM)
  Fixed "continuous update from GPS" of admin webpage grid/location fields. (thanks JQ6LIA)
  TDoA extension: Flag sampling hosts as having low GPS resolution (but not doing this just yet).
  Fixed more cases of failing to restart proxy client when proxy configuration changed.

(less)
Forgot your admin password? v1.803+ has an admin password reset feature

jks

February 12

Okay, I think the new admin password reset scheme is working well. See image below.
The option will appear only if you connect from your local network. Not from an Internet connection (e.g. not from a… (more)

Okay, I think the new admin password reset scheme is working well. See image below.
The option will appear only if you connect from your local network. Not from an Internet connection (e.g. not from a Kiwi-2 serial number based proxy connection: 2xxxx.proxy.kiwisdr.com/admin). Use my.kiwisdr.com to find the local IP address link to your Kiwi's admin page (e.g. 192.168.1.101:8073/admin).
You must also provide the Kiwi's serial number. This should be easy since it's written on the physical hardware (Kiwi-1: written in the white box on the Kiwi PCB, Kiwi-2: written on a label on bottom of case).
As a further security measure the option will only appear for the first 5 minutes after the Kiwi software starts (power-up or software restart).
So the restrictions should guarantee the Kiwi is in your immediate physical control. So no good for your remote Kiwi located 300 km away on a mountain top.
If anyone can think of a flaw in this reasoning please let me know ASAP.

Everything is carefully validated on the server-side. So anyone hacking Javascript on the browser shouldn't be able to exploit the scheme.
(less)
v1.707

jks

November 2024

The new git "rebase" I'm working on reduces the size of the Kiwi repo by about 90% to 55 MB. So that should fix this problem.

Howdy, Stranger!

jks

About

Reactions