Рубрика «Комментарии»

Comment on New ExtIO for the HackRF and HDSDR by Dave

I’m still having trouble with windows 10 and SDR Sharp where the screen freezes when I stop and try to play. I was looking for an alternative.

Comment on List of SDRSharp Plugins by Anonymous

Signal diagnostics power value logger
https://teknokoodiradio.vuodatus.net/lue/2019/10/sdr-signal-diagnostics-logger-plugin

Comment on Submit a Story/Contact by Celia Hahn

Has any NOAA satellite ‘listening’ software been ‘upgraded’ to be accepted by a machine running the latest Apple OS “Catalina – V10.15. It needs to be 64 bit compatible. I am using CubicSDR at the moment to to listen to terrestrial FM.
Is there any APT software that will work on this type of MAC set-up?
Thanks in advance for your attention and cooperation.
I have already ordered your book.

Comment on Raspberry Pi 4 Released: Improvements to CPU, Networking, USB, RAM and more by Bob Slovick

Has anybody been able to use the Pi 4 with the Kerberos SDR ( https://www.rtl-sdr.com/ksdr/ ) Demo image that is written for the Pi3 / B+? If so, is there anything you feel I should know?

Thank you!
Bob
AD0HI

Comment on G8JNJ Reverse Engineers and Reviews the MLA-30 HF Loop Antenna by Martin — G8JNJ

I wouldn’t bother changing the coax as the cable losses are negligible and the loop amplifier defines the overall noise figure and Signal to Noise ratio.

The existing bias tee is adequate, as the bias tee choke inside the amplifier is the main constraint with respect to the overall frequency response.

There is one modification that is relatively easy and worth doing.

That is to add a 1000uF capacitor across C2 in the circuit diagram.

http://www.g8jnj.net/MLA30%20Biasing%20Tee%20Outline.png

This dramatically reduces the level of 60 and 120KHz noise from the 5v to 12v DC-DC switching convertor that is present at a fairly high level on the RF output.

Comment on G8JNJ Reverse Engineers and Reviews the MLA-30 HF Loop Antenna by none

I see. There are some easy Mods like put a serious Antenna Cable onto and or change the Bias-T.
So when no other mods are easy to process i stick with them.

Comment on G8JNJ Reverse Engineers and Reviews the MLA-30 HF Loop Antenna by Martin — G8JNJ

I wouldn’t bother trying to modify it, it’s not worth the effort.

You have to remove the potting compound to get to the circuit board and it is highly likely that other components will get damaged in the process.

Just enjoy using it as it is.

Comment on An Opensource Mini-Whip Antenna and Upconverter Design for RTL-SDRs by Richard Zed

I won’t assume you think Australia is some tiny Island in the southern hemisphere , at the end of the day it’s all about location no matter where you live .

Comment on XYNC: A Massive MIMO SDR with up to 32×32 TX/RX Channels by CS

I would settle for a PCIe card that could handle 2 or 4 mini-PCIe cards with some kind of PLX-type switch on it (instead of bifurcation).

Comment on An Opensource Mini-Whip Antenna and Upconverter Design for RTL-SDRs by Curs Mad

Australia… so far from everyhwere… normally you have low noise there.
Here in Europe… it’s hard with the high noise, mainly in the LW domain.
Shall I say I’m an old broadcasting LW, MW, SW lover ?

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