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Re: AGC Questions
#sdrconsole
Hi,
Sorry for the delay – I’ll provide an answer later today, bit busy atm.
Simon Brown, G4ELI https://www.sdr-radio.com
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of rmrrgs
Sent: 26 May 2020 12:25 To: main@SDR-Radio.groups.io Subject: [SDR-Radio] AGC Questions #sdrconsole
Hello,
All sorts of combinations I could relate, but the following pretty much summarizes what is confusing (to me at least). It seems for me the results of changing the RF Gain, the IF Gain, and AGC On/Off are not consistent, or repeatable.
Using a RSPdx, and a simple horiz 70 foot long wire ant.
Last night was listening to WWV on 15 MHz. Came in quite clear.
(a) Baseline on Spectrum is -110 dbm (good, right ?) AGC is Off. RF Gain at 0 (min)
(b) I now turn the AGC On IF Gain is -55 dB Baseline jumps to -85 dbm !
If I change the IF Gain to -35 dB, or -20 dB, no change in Baseline or signal.
*So, why please does turning the AGC to ON apparently increase the noise floor ?
*And, If I change the AGC now to OFF, nothing happens. Why ? Shouldn’t it revert back to (a) again ?
BTW: would anyone, besides me, like to see Sliders, rather than discretes, for the RF and IF Gain settings ?
Best regards, Bob
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Re: Simon's World Map
Well,
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I know it can be done, it's some sort of a gradient brush, it's probably silly easy when I work it out but so far I'm stumped. Having said that... Simon Brown, G4ELI https://www.sdr-radio.com -----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of jdow Sent: 27 May 2020 08:20 To: main@SDR-Radio.groups.io Subject: Re: [SDR-Radio] Simon's World Map It's more like you'd have to get mired in the DirectShow stuff. {o.o} On 20200526 22:16:40, Simon Brown wrote: Hi, |
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Re: Simon's World Map
jdow
It's more like you'd have to get mired in the DirectShow stuff.
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{o.o} On 20200526 22:16:40, Simon Brown wrote:
Hi, |
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Re: Simon's World Map
Ah,
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Here we have the ITU zones: https://www.itu.int/en/ITU-R/terrestrial/broadcast/HFBC/Documents/RefTables/ciraf.txt When I get bored of an evening I may well add this. Simon Brown, G4ELI https://www.sdr-radio.com -----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Simon Brown via groups.io Sent: 27 May 2020 06:18 To: main@SDR-Radio.groups.io Subject: Re: [SDR-Radio] Simon's World Map Hi, I would need a database of the zones with the info for drawing this, could be shapefile format as used by timezones, could be the same format used for country boundaries. It just has to be a database / flat file. Simon Brown, G4ELI https://www.sdr-radio.com -----Original Message----- From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of DL1DXX Sent: 26 May 2020 22:09 To: main@SDR-Radio.groups.io Subject: Re: [SDR-Radio] Simon's World Map Hi possible to add and show ITU and CQ Zones with 2 seperatly buttons? vy 73, Andy - DL1DXX |
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Re: Simon's World Map
Hi,
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I would need a database of the zones with the info for drawing this, could be shapefile format as used by timezones, could be the same format used for country boundaries. It just has to be a database / flat file. Simon Brown, G4ELI https://www.sdr-radio.com -----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of DL1DXX Sent: 26 May 2020 22:09 To: main@SDR-Radio.groups.io Subject: Re: [SDR-Radio] Simon's World Map Hi possible to add and show ITU and CQ Zones with 2 seperatly buttons? vy 73, Andy - DL1DXX |
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Re: Simon's World Map
Hi,
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In theory it's doable, I just don't know the correct DirectX / Driect2D programming for this. It's to do with brushes, it's a feature that's been nagging me for quite a while. Simon Brown, G4ELI https://www.sdr-radio.com -----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Mike Bott Sent: 26 May 2020 20:52 To: main@SDR-Radio.groups.io Subject: Re: [SDR-Radio] Simon's World Map On 5/26/20 3:26 PM, Simon Brown wrote: Mike,Simon, Would this be a bad time to ask about a day/night map that looks like the one on the left? :-D -- Mike |
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3.0.23 Release Notes
Version 3.0.23 will be released in a few days, here are the provisional release notes.
https://www.sdr-radio.com/release-notes#Release3-0-23
Simon Brown, G4ELI https://www.sdr-radio.com
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Re: Simon's World Map
Andy - DL1DXX
Hi
possible to add and show ITU and CQ Zones with 2 seperatly buttons? vy 73, Andy - DL1DXX |
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Re: Simon's World Map
On 5/26/20 3:26 PM, Simon Brown wrote:
Mike,Simon, Would this be a bad time to ask about a day/night map that looks like the one on the left? :-D -- Mike |
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Re: Simon's World Map
On 5/26/20 3:26 PM, Simon Brown wrote:
Mike,Simon, Oh yea, it's more rational this way. -- Mike |
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Re: Simon's World Map
Mike,
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I've updated https://www.dropbox.com/s/uu0xdycrl7pruku/Simon%27s%20World%20Map%202020-05-26.exe?dl=0 This is better. The logic for labels is not easy, for example: https://en.wikipedia.org/wiki/Automatic_label_placement . Some day I would like to get this written... Simon Brown, G4ELI https://www.sdr-radio.com -----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Mike Bott Sent: 26 May 2020 18:49 To: main@SDR-Radio.groups.io Subject: Re: [SDR-Radio] Simon's World Map Greetings Simon, I like it. However Cerrik seems to be a bit hung out there. :) But it took care of the Woofferton, Nauen, Issodunn Nobleas mash up for sure. -- Mike On 5/26/20 11:06 AM, Simon Brown wrote: Hi Mike, |
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Is it Applicable to Airspy mini too?
========================================= It works on the Mini, but may not offer all the advantages of lower phase noise, AIUI. David -- SatSignal Software - Quality software for you Web: https://www.satsignal.eu Email: david-taylor@... Twitter: @gm8arv |
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Re: Simon's World Map
Ah,
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Cerrik is odd - I see similar with one of my tabs. Will check... Simon Brown, G4ELI https://www.sdr-radio.com -----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Mike Bott Sent: 26 May 2020 18:49 To: main@SDR-Radio.groups.io Subject: Re: [SDR-Radio] Simon's World Map Greetings Simon, I like it. However Cerrik seems to be a bit hung out there. :) But it took care of the Woofferton, Nauen, Issodunn Nobleas mash up for sure. -- Mike On 5/26/20 11:06 AM, Simon Brown wrote: Hi Mike, |
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Honza Princl
Is it Applicable to Airspy mini too?
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Re: Simon's World Map
Greetings Simon,
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I like it. However Cerrik seems to be a bit hung out there. :) But it took care of the Woofferton, Nauen, Issodunn Nobleas mash up for sure. -- Mike On 5/26/20 11:06 AM, Simon Brown wrote:
Hi Mike, |
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Re: Which SDR for pan adaptor on a 9MHz IF output?
Chris Wilson
Hello EB4APL,
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Saturday, May 23, 2020 As far as I can see there are only bandpass filters in front of the IF tap, most users of FTdx-5000 sets seem to use it for their external panadaptor, but thanks for the heads up. I have decided to keep it cheap and simple and use a (admittedly USB...) Softrock Lite II on 9MHz for now to see how I get on with this thing. Thank you to all who have replied, appreciated. Best regards, Chris 2E0ILY mailto:chris@... E> Hi Chris, E> I don't know the FTdx-5000, but unless this IF output is specifically E> intended for panadapters, you will be disappointed when you connect any E> SDR there. The panadapter must be connected to any IF before the E> selective filters, usually to the first IF, if there is a filter before E> the tap point the bandwidth shown in the panadapter is almost useless. E> My recommendation is to study your radio documentation and schematic E> before buying any SDR for panadapter. After trying it with the second IF E> output in my radio (not a FTdx-5000) and finding this output bandwidth E> unusable, I made a tap in the first IF (73.115 MHz) before the roofing E> filter. This frequency is adequate for using a RTL-SDR tv dongle, E> something so cheap that I installed it inside the radio and installed an E> USB socket in the back panel. E> You say that you can not use USB, this limits very much the selection of E> the SDR receiver that you can buy. E> Regards, E> Ignacio, EB4APL E> El 23/05/2020 a las 13:51, Chris Wilson escribió: 23 May 2020 |
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Re: Simon's World Map
Hi Mike,
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https://www.dropbox.com/s/uu0xdycrl7pruku/Simon%27s%20World%20Map%202020-05-26.exe?dl=0 Still a few things to do, I'd be interested to see a screenshot of your layout. Simon Brown, G4ELI https://www.sdr-radio.com -----Original Message-----
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Mike Bott Sent: 25 May 2020 15:42 To: SDR-Radio@groups.io Subject: [SDR-Radio] Simon's World Map Simon, The next time you decide to update your World Map app, can you set up a way to shift the Title Tags to either the right as they are now, or to the left? This will allow the tags to placed a bit more out of the way of locations one would want to see. Thanks! -- Mike |
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Re: Simon's World Map
Brian Morrison
On Mon, 2020-05-25 at 21:20 +0100, Simon Brown wrote: Am not coding SDR today, just playing with the map. See attachment... Nice! +1 -- Brian G8SEZ |
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Re: ELAD DUO - TX Support
mike bayard
Thank you for your efforts and the proper advice ihave been very vocal that i would love to see tx support the reciever quality is so much better using the console
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Re: Simon's World Map
I was referring to the screen shot you posted in post #56952:
Who is this KA1GLU? Looks like he lives near me (KA1GJU) but no such call in QRZ.com. 😁🤣 73 Kriss KA1GJU aka "Gee Jay You" or is it "Gee Ell You"? |
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