G8JNJ

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G8JNJ
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  • i have had the KiwiSDR2 for a couple of days.... and

    Most likely you will, so good hunting.

    Oh and folks will soon be turning on their cheap Chinese made Christmas lights and decorations, so expect things to get worse for a month or so, until they get packed away again ready for next year.

    Regards,

    Martin

    pantano
  • Temporary Markers / Labels

    Ah OK, like temporary user specific DX labels or were you something else ?

    Regards,

    Martin

    smg
  • UpDate to Debian 11.9 and KiwiSDR to 1.707

    I don't think you will be able to get in using WinSCP.

    I'm experiencing similar problems since updating the OS version, and WinSCP doesn't provide the option to log in as su. I seem to remember reading a thread about it but can't find it.

    Also, with Debian 11 to enable root login, you can add a line to the sshd_config file in /etc/ssh/sshd_config:

    Edit the file as root using nano /etc/ssh/sshd_config

    Add the line PermitRootLogin yes in the Authentication section

    Save the file

    Restart the SSH server using service sshd restart

    I swear the Linux folks move the goalposts purely to keep us muggles at bay, but if you do find a solution, be sure to tell us, as this is turning out to be a real pain.

    Regards,

    Martin

    ShaneBrook
  • I think we made contact :-D

    Yeh, I realised you were joking.

    If you live in that part of the world, then I'm surprised you can hear anything other than radars :-(

    The Wave radar you mentioned is very strong in Europe, which is why I thought it must be located over this direction, but I could be wrong.

    Wave radars do occupy more than 50kHZ, so the SigID Wiki is incorrect.

    The list of US Wave Radars can be found here (warning, it takes a long time to load) This also states their sweeprate (typically 1, 2 & 4 seconds) and bandwidth (some are 100, 600, 1000kHz)

    https://hfrnet.ucsd.edu/sitediag/stationList.php

    Another list containing European projects (also slow to load) click on the "download metadata" option to get a list.

    https://www.hfrnode.eu/map/

    If anyone does find a list for Asia, Australia etc. I'd be keen to see it.

    Regards,

    Martin

    smg
  • I think we made contact :-D

    Sorry to dissapoint.

    It's a Wave radar, but it must be a new one, as it's not on my list of European or North American ones.

    smg
  • Dozens of CW transmissions?

    Most likely during a contest or similar.

    When some of the big contests are running, like CQ Worldwide, the amateur bands are usually packed.

    Most contests tend to held during the weekend.

    Regards,

    Martin

    smg
  • W6LVP Amplified Receive-Only Magnetic Loop Antenna / Where to buy in NZ?

  • W6LVP Amplified Receive-Only Magnetic Loop Antenna / Where to buy in NZ?

    "I would like to invest in the W6LVP"

    Also pretty average IMHO, I'd go for LZ1AQ, used Wellbrook or Cross Country Wireless.

    Check out the Loopantennas IO group, ready built PCB's on offer at decent prices.

    Regards,

    Martin

    smg
  • Dragging band edge and losing the "handle" [fixed in v1.700]

    Hi John,

    Not a big deal, but it may be related to the mouse behaviour.

    I notice that sometimes when I click on the waterfall, the KiWi doesn't tune to that frequency, but it remains on an existing frequency. A second click is then required before it tunes correctly.

    I have only noticed this over the past month or so, but it may have been like this for a while.

    Regards,

    Martin

    N1NKM
  • Antenna Considerations / Do's and Don'ts

    The gain control on the bias tee is a passive one, so it's probably best to set that for minimum attenuation and maximum signal levels anyway.

    Then adjust the gain control on the loop amplifier board.

    There is no point adding more gain than necessary in the loop amplifier, only to counteract it by applying attenuation later in the signal chain.

    Ideally, you should aim for approximately 6dB increase in the KiWi noise floor at frequencies around 20 to 30MHz, when the antenna is powered.

    Any more than this, and you will not improve the Signal To Noise Ratio, but you will be eating away at the receiver's dynamic range, and making it more prone to overload on strong signals.

    A 6dB increase in noise floor, when the antenna is connected, is the "sweet spot" to aim for.

    Regards,

    Martin

    smg