G8JNJ
About
- Username
- G8JNJ
- Joined
- Visits
- 4,629
- Last Active
- Roles
- Member
- Points
- 127
Reactions
Comments
-
Agreed, I've also sent an email to Andras. Regards, Martin - G8JNJ
-
Hi Bill, Peter and others, I'm fairly sure it's originating from your ethernet cables and / or router. As an experiment today I connected a 1inch diameter single turn RF 'sniffer' loop to the end of a short length of coax and had a 'sniff' around my…
-
Hi John, That's a lot better :-) Most of the time it's now hardly noticable, but it's still quite obvious when zooming between levels Z5 - Z8 for some reason. Z0 - Z5 is OK 'ish' . Using the iPad mini displaying 0-30MHz on the waterfall the audio no…
-
Hi John, I just tried it on my iPad Mini using both Chrome and Safari, using a strong WiFi signal and logged in via the local IP addresses. If I listen to a good quality Broadcast station, the audio is chopping up almost continuously when the waterf…
-
Hi John, I have emailed you a short video screen grab with audio. Regards, Martin - G8JNJ
-
Hi John, Very odd - I'm using a Desktop Intel i7-2600 @ 3.4GHz 16GB RAM running Win 7 pro 64 bit. The problem was really bad this morning when I was using Chrome. I just tried Firefox and it was better, although I get both Audio under and over run m…
-
Hi John, The new reduction in audio latency makes almost 1 second difference on my local network which is great :-) However I don't know if it is just me, but unfortunately the audio 'stuttering' when the waterfall is moved or zoomed or the frequenc…
-
Hi John, OK thanks :-) Regards, Martin - G8JNJ
-
Hi, I'm not showing up on sdr.hu but I'm OK on the other sites so it looks like there is still a problem. I'll drop a note to Andr?s. Regards, Martin
-
Hi J-Luc, Maybe you could add something as simple as a relay driven by a transistor and potential divider / zener to the DC supply so that it drops out / cuts in only when the supply volts have established themselves correctly ? Regards, Martin - G8…
-
Great, Thanks for adding this John. Regards, Martin - G8JNJ
-
Hi jOhn, Just a thought. Perhaps the "IQ balance" button should be in the IQ section of the admin extensions page rather than in the extension itself ? All the other extension configs / setup used by the admins seem to reside there, and t…
-
Hi John, Great thanks for doing this. The strange thing is that one of my KiWi's was OK but the other (older one) wasn't. I just assumed that something had drifted (perhaps with the heat) as it's been very hot (for the UK) for the past few weeks. Re…
-
Hi John, The I/Q balance has drifted on one of my SDR's and I'm hearing hetrodynes at about -20dB on AM BC stations if they are slightly offtune. The current method of adjustment is a real pain :-( Please could the original method (with some safegu…
-
I'm also currently using my SDR to try and measure gain differences between various antennas. It would be very handy to have a rolling average, max and min values displayed numerically, either on or near the graph. Some marker lines on the graph wo…
-
A good comprehensive review - but after spotting the inclusion of a name check for my SDR I would say that woudn't I :-) Regards, Martin - G8JNJ
-
Hi Phil, Nothing so exotic :-) I think this is what you are hearing. When the browser first starts up, the SDR tunes to the default frequency defined in the Admin config page. If you have previously used the SDR, the last frequency you listened to i…
-
Oops sorry, I meant Audio sample rate not ADC sample rate. Regards, Martin - G8JNJ
-
Hi Mariusz, I chose 33K (to minimise the current draw to <100uA as the original GPIO ports I used were shared for other purposes), but yes you are correct. To be on the safe side the max current the Beagle GPIO ports can source /sink should be le…
-
Hi, I assume part of this query and previous similar discussions also relate to the slope observed on Fax images. Has the original division ratio had to be changed as a result of recently increasing the ADC sample rate from 9,6K to 12 K ? as this …
-
I just noticed a small error in my last posting - it should read:- "I also connected a 0.1uF capacitor between the transistor collector base and emitter to reduce noise or RF pickup by the transistor from the connecting cable." Regards, …
-
Hi Mariusz, I used a short screened multicore cable (but you could possibly use ribbon cable if you don't transmit nearby) ) with a 9 pin female D socket as a flying lead from the KiWi and carefully soldered to the pins on the reverse of the board. …
-
Hi John, OK - I wan't sure if it was due to the Ant- Switch extension as others with the extension running were shown as upgraded on sdr.hu. I tried pulling the git file as suggested but that didn't work as I had modified some of the ant-switch defa…
-
Hi Arnie, OK great - I also heard the Faulty NOJ on 8557.1 this morning - looks like the TX is being overdriven and is producing IMD. So including your previous information, my new 'Unconfirmed" list is now:- 0.0214 GYA Northwood, UK0.1461 PEVE…
-
Hi Arnie, Following an analysis made by a friend of mine, he suggests that "The slant would seem to be because the frequency of a streamed demodulated tone from the SDR is is about 90ppm lower than the demodulated tone of the original signal&qu…
-
Hi John, Just a thought - would it be possible to use a different colour font for the Fax presets that we know are good - so that it's easier to concentrate on the ones that haven't so far been confirmed ? This is my current list of Fax signals from…
-
Hi John, I checked 12786 Pt. Reyes, NMC last night and it was correct on 12784.1 However there is another Fax signal that is using approximately the same channel but is slightly off-frequency. I've observed that the start tones don't line up correc…
-
Hi John, I notice that some of the FAX presets are not tuning to the correct frequency. e.g. 8105 Athens, SVJ4 GR tunes to 8103.10 when it actually needs to tune to 8105. 12786 Pt. Reyes, NMC US tunes to 12784.10 when it actually needs to tune to 1…
-
Hi John, Thanks for all the FAX updates in V 1.93 - that's a lot better :-) I've also copied you on some private emails that may be of interest to you. Regards, Martin - G8JNJ
-
OK will do. Regards, Martin - G8JNJ