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by glovisol
Mon Mar 18, 2019 3:14 pm
Forum: SDRuno
Topic: Scanning the 2M Ham band
Replies: 5
Views: 226

Re: Scanning the 2M Ham band

Hi Hugo,

Forgive me for this (perhaps stupid & obvious question...) did you switch the MW/FM notch filter IN when attempting to scan the 2 m band? In me y experience the Scanner works faultlessly....so there must be something obviously wrong on your side.

Cheers,

glovisol
by glovisol
Mon Mar 18, 2019 3:10 pm
Forum: SDRuno
Topic: IMPORTANT WHEN SCANNING VHF WITH SDRuno VER.1.3!
Replies: 0
Views: 22

IMPORTANT WHEN SCANNING VHF WITH SDRuno VER.1.3!

Hallo all, What follows will seem obvious to many, nevertheless it costs nothing to post this warning. When scanning above 30 MHz ALWAYS USE THE MW/FM NOTCH FILTER. In areas with strong or very strong FM stations (e.g., all over!) the SDR receiver front end will be surely knocked off to overload &am...
by glovisol
Mon Mar 18, 2019 8:47 am
Forum: General
Topic: HIGH PASS FILTER FOR OPTIMUM HF RECEPTION
Replies: 69
Views: 9563

Re: HIGH PASS FILTER FOR OPTIMUM HF RECEPTION

HIGH PASS FILTER GROUND CONNECTION OPERATION

Please refer to the balanced HP filter schematic that I again upload below for convenience. I have found that for certain LOCAL NOISE conditions it essential to disconnect the ground lead to remove interference, as shown in the pics below.
by glovisol
Mon Mar 18, 2019 8:18 am
Forum: SDRuno
Topic: APRS Interference on 144.240Mhz
Replies: 2
Views: 60

Re: APRS Interference on 144.240Mhz

This probably happens because the IF AGC is strongly driven by the APRS signal and quickly lowers the gain. This problem should be overcomed with the new IF AGC implementation of SDRplay. You should install Ver. 1.3 and verify the improvement. Pse post your result!
by glovisol
Sun Mar 17, 2019 6:27 pm
Forum: General
Topic: HIGH PASS FILTER FOR OPTIMUM HF RECEPTION
Replies: 69
Views: 9563

Re: HIGH PASS FILTER FOR OPTIMUM HF RECEPTION

In Figure 2bis we have giant signals on the 49 m band (up to -26 dBm) and still a clean spectrum using the internal MW notch filter. Note that in the previous post RF gain is at maximum in Fìgures 1 & 2, but what happens if we reduce the gain? Figure 3 shows 19 m band reception of BBC on 15,400 ...
by glovisol
Sun Mar 17, 2019 5:46 pm
Forum: General
Topic: HIGH PASS FILTER FOR OPTIMUM HF RECEPTION
Replies: 69
Views: 9563

Re: HIGH PASS FILTER FOR OPTIMUM HF RECEPTION

Using SDRplay Ver. 1.3 I am uploading screns pics showing HI PASS filter performance while receiving Voice of America, Washingtong D.C. on the 19 m band as if it were a few km away. Figure 1 shows spurious and artefacts caused by strong local signals in the MW broadcast band. Figure 2 shows a clean ...
by glovisol
Sun Mar 17, 2019 4:41 pm
Forum: SDRuno
Topic: For Mike: Bug In Latest Vers. ?
Replies: 8
Views: 291

Re: For Mike: Bug In Latest Vers. ?

Hi Robert,

Perhaps you should locate the "Restart API service" file and click on it and/or delete the SDRuno INI file when you have difficulties, see pic below....Perhaps you do not have to re-install all with this trick.

glovisol
by glovisol
Sun Mar 17, 2019 4:26 pm
Forum: SDRuno
Topic: New Version 1.3 disapointing
Replies: 8
Views: 392

Re: New Version 1.3 disapointing

This is what I mean....

Cheers,

glovisol
by glovisol
Sun Mar 17, 2019 3:50 pm
Forum: SDRuno
Topic: New Version 1.3 disapointing
Replies: 8
Views: 392

Re: New Version 1.3 disapointing

Hi Patrick, CONTRARIAN OPINION: NEW VER. 1.3 VERY GOOD INDEED!! My advice is to do a COMPLETE FRESH INSTALL, deleting all traces of the previous version(s). The reason why is that it is very difficult to foresee the effects of leftovers in the system. Perhaps an old driver or DLL will not affect the...
by glovisol
Fri Mar 15, 2019 7:40 pm
Forum: SDRuno
Topic: 1.3 Unable to select WFM and SWFM
Replies: 7
Views: 226

Re: 1.3 Unable to select WFM and SWFM

Hi Illllm,

Ver 1.3 works fine in Broacast FM. Here below PIC showing settings. On second PIC signal is so strong the S Meter is pinned to the right!

Cheers,

glovisol

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