jks

From an hp 8657D coupled with a "gimmick" cap. No front panel sweep on the "D" unfortunately (HPIB only). So manual 10 kHz steps. Kiwi spectrum averaging and peak function to capture. Except for < 150 kHz where there is a clear drop-off, the scalloping is probably FFT spectral leakage since I never learned how to do my post-FFT DSP properly.

I see SMPS harmonics that are much louder than the fundamental all the time. Even into HF sometimes. It just baffles me. And when the fundamental is an unstable carrier, at HF it often turns into such a wide signal that the harmonics bridge together and it looks like a huge bump in the noise floor!

It's using a Hanning window now. And the code has the usual suspects available (but commented out): Hamming, Blackman-Harris. I haven't look at the windowing specifically in years. Although we had the recent problems I induced when changing the FFT pixel downsampling and adding CIC filter compensation.

If you're talking about the KiwiSDR Android app, then yes, there was a problem that was just fixed. Kiwis that run the latest release (v1.460) or later should work with the app again. About 70% of public Kiwis have updated. The rest should follow in the next day or so.

The issue was that the app uses an embedded web viewer that did not fully implement web standards that the Kiwi code depends on.

@HB9TMC I'll fix that today. Shouldn't be applying the CIC compensation when there is no CIC in use! 🙄

As for the spectrograms, I don't know. All the Kiwi spectrums I looked at using the Kiwi spectrum display and high averaging gave the same peak values on a variety of settings. I guess the only thing to do is make a new waterfall API option so you can select either behavior and Marco can get his fix for SuperSDR.

They're 0402s, which are stupidly small for hand assembly. If it were me I wouldn't bother. I'd bridge T301 and be done with it.

"Rounded frequency set": http://kiwisdr.com/quickstart/index.html#id-user-shortcuts

There are two fully adjustable noise blanker algorithms. And they both have an associated test mode, also fully adjustable. So you should be able to practice using them.

Unless your fence noise is weak or the pulses are not well-defined there shouldn't be a problem. I just tried it again (test mode) and it works great!

I don't think Chome 90 (with the fix) has actually been released yet.

Given the age of this thread I'm going to un-announce it..

Okay, all should be good now (except for my splitting headache). I'm not 100% sure because it won't let me stay logged in for more than a few seconds (BT bastards). And your router isn't forwarding port 8073 connections to the new local ip address of course.

Sure enough, the Beagle guys made an incompatible change in how the .dtb file is loaded by Uboot. I'll have to figure out a change to support it.

There is a new version of the antenna switch extension available.

Important installation notes:

• Let your Kiwi update to v1.449 first.
• Use my repo, not Kari's, until he merges my changes (e.g. via "gclone" command below).
• Install can be accomplished from the Kiwi admin page "console tab".

Get a Linux shell either using the admin page console tab or ssh/PuTTY directly into your Kiwi. Type:

New features and fixes:

• Can limit access three ways: local connections only (owner/admin effectively), local connections plus users connecting with a password (for Kiwis with split user password access), everyone can access. For the split password case you must add "&p" to the URL as described here: http://kiwisdr.com/quickstart/index.html#id-user-urlp-prot
• Support for KMTronic LAN Ethernet IP 8 channels WEB Relay device. https://info.kmtronic.com/kmtronic-lan-ethernet-ip-8-channels-web-relay-board.html
• Other user connections are notified via a popup when the antenna is changed. The popup closes automatically after 3 seconds. This may need some refining. There has also been the suggestion that an autoscale be performed on an antenna switch if in auto aperture mode.
• Message is displayed to user if antenna switch parameters have not yet been configured by admin.
• Installation time is much faster as entire Kiwi software rebuild is no longer done.