Search found 662 matches

by glovisol
Mon Sep 02, 2019 6:11 am
Forum: General
Topic: Why do my posts suddenly need moderator approval?
Replies: 31
Views: 6232

Re: Why do my posts suddenly need moderator approval?

In my post of 31/08/2019 ("THE ELECTRONIC JAIL & QUI CUSODIET CUSTODES )" the following can be read: In the last of these instances, SDRplay, in the person of Tech_Support, took the step of introducing prior censorship, which has been and is called (in George Orwell’s newspeak, perhaps?) “active mod...
by glovisol
Sun Sep 01, 2019 7:28 pm
Forum: General
Topic: Why do my posts suddenly need moderator approval?
Replies: 31
Views: 6232

Re: Why do my posts suddenly need moderator approval?

HERE BELOW I POST AGAIN MY ORIGINAL, UNAMENDED MESSAGE, POSTED 31/08/2019, THAT WAS CANCELLED BY MISTAKE. THE ELECTRONIC JAIL OR QUI CUSTODIET CUSTODES? Today is approximately 14 months since I started contributing to this Forum. I was attracted by the outstanding quality of the RSP Processor recei...
by glovisol
Sun Sep 01, 2019 4:41 pm
Forum: General
Topic: Why do my posts suddenly need moderator approval?
Replies: 31
Views: 6232

Re: Why do my posts suddenly need moderator approval?

I hope I will be allowed to respectfully continue to put forward in this thread my observations whereby the new "preventive cemsorship" policy is projecting a negative and usuitable image of our Community Forum and of SDRplay, as well as resulting in an unjustified oppression of Forum Members. 1) Th...
by glovisol
Tue Aug 27, 2019 7:08 am
Forum: General
Topic: Why do my posts suddenly need moderator approval?
Replies: 31
Views: 6232

Re: Why do my posts suddenly need moderator approval?

This is, I believe, an adult's forum, with a majority of responsible participants, who are the real owners of the forum and its contents. This preventive censorship procedure is humiliating both for the censor and for the participants and this is the reason why I stopped my contributions. This proce...
by glovisol
Sat Jul 27, 2019 4:04 pm
Forum: SDR Antennas
Topic: Receive Antenna & Impedance "Matching"
Replies: 114
Views: 25747

Re: Receive Antenna & Impedance "Matching"

CLARIFICATION ON SENSITIVITY PERFORMANCE COMPARISON RSP-1A VS. RSPduo & FOCUS ON NEGATIVE S/N 11. APPENDIX - Looking at WSPR reception @ 14 MHz from the perspective of RSP Processors 4-3 Noise meas. 14 MHz.jpg With the cited modification the Beverage antenna Noise Floor increased less than at the l...
by glovisol
Fri Jul 26, 2019 5:03 pm
Forum: General
Topic: BUILDING SELECTIVITY PROTECTION INTO THE RSP FRONT END IN LF/HF
Replies: 19
Views: 6627

Re: BUILDING SELECTIVITY PROTECTION INTO THE RSP FRONT END IN LF/HF

2.3. A DIGRESSION - NARROW BAND PRE-SELECTORS COMPUTER SIMULATION Uploaded below Figures 16 & 17 showing simulated performance @ 30 MHz. Figure 16 (under top title) shows the following parameters: CF- Center Frequency: 30 MHz Qu - Unloaded Q: 140 QL- Loaded Q: 40 IL - Insertion loss: 2.9 db L - Coi...
by glovisol
Fri Jul 26, 2019 4:57 pm
Forum: General
Topic: BUILDING SELECTIVITY PROTECTION INTO THE RSP FRONT END IN LF/HF
Replies: 19
Views: 6627

Re: BUILDING SELECTIVITY PROTECTION INTO THE RSP FRONT END IN LF/HF

2.3. A DIGRESSION - NARROW BAND PRE-SELECTORS COMPUTER SIMULATION Uploaded below Figures 14 & 15 showing simulated performance @ 20 MHz. This is an overlap, having switched from the 8-20 MHz to the 20-30 MHz band. Figure 14 (under top title) shows the following parameters: CF- Center Frequency: 20 ...
by glovisol
Fri Jul 26, 2019 6:23 am
Forum: General
Topic: BUILDING SELECTIVITY PROTECTION INTO THE RSP FRONT END IN LF/HF
Replies: 19
Views: 6627

Re: BUILDING SELECTIVITY PROTECTION INTO THE RSP FRONT END IN LF/HF

2.3. A DIGRESSION - NARROW BAND PRE-SELECTORS COMPUTER SIMULATION Uploaded below Figures 12 & 13 showing simulated performance @ 20 MHz. Figure 12 (under top title) shows the following parameters: CF- Center Frequency: 20 MHz Qu - Unloaded Q: 180 QL- Loaded Q: 40 IL - Insertion loss: 2.2 db L - Coi...
by glovisol
Fri Jul 26, 2019 6:16 am
Forum: General
Topic: BUILDING SELECTIVITY PROTECTION INTO THE RSP FRONT END IN LF/HF
Replies: 19
Views: 6627

Re: BUILDING SELECTIVITY PROTECTION INTO THE RSP FRONT END IN LF/HF

2.3. A DIGRESSION - NARROW BAND PRE-SELECTORS COMPUTER SIMULATION Uploaded below Figures 10 & 11 showing simulated performance @ 8 MHz. This is an overlap, having switched from the 4-8 MHz to the 8-20 MHz band. Figure 10 (under top title) shows the following parameters: CF- Center Frequency: 8 MHz ...
by glovisol
Thu Jul 25, 2019 8:17 pm
Forum: SDR Antennas
Topic: Receive Antenna & Impedance "Matching"
Replies: 114
Views: 25747

Re: Receive Antenna & Impedance "Matching"

CLARIFICATION ON SENSITIVITY PERFORMANCE COMPARISON RSP-1A VS. RSPduo & FOCUS ON NEGATIVE S/N 10. Conclusion The theory and practice of the performance analyses we have seen in the above titled series of posts can be found in these two basic studies available on this Forum: ASSESSING THE PERFORMANC...