Search found 28 matches

by DF1KZ
Sat May 26, 2018 6:34 am
Forum: SDRplay related
Topic: Splitter for RSP1A
Replies: 1
Views: 267

Re: Splitter for RSP1A

Hello Bob, It is very easy to build a resistive splitter. A few resistors and SMA-connectors. Or buy one for a few dollars from one of the chinese stores. You get a few dB loss but that doesnt care. I build a divider myself to distribute the signal of my active antenna to several receivers. Wolfgang
by DF1KZ
Sun May 13, 2018 7:53 am
Forum: SDR Antennas
Topic: Discone Antenna
Replies: 6
Views: 1394

Re: Discone Antenna

I use an ICOM AH-8000 discone. It works very well as a receiving antenna for my RSPs. It is also used for transmitting on 2m and 70cm (50W). Just for fun I connected my 100mW WSPR TX (Ultimate 3) to this discone and got reports from VK5. One advantage may be that this discone is made of stainless st...
by DF1KZ
Fri Mar 09, 2018 6:19 pm
Forum: General
Topic: RSP1A Bias -T
Replies: 4
Views: 1647

Re: RSP1A Bias -T

Yes, there is a component you can remove - its an inductor on the pcb near the antenna plug. You remove it on your own risk. Your warranty will be void. You can also use an external DC-block, a capacitor in series (depending on your lowest frequency 100nF-470nF, ceramic). Imho there is no circuit dr...
by DF1KZ
Thu Dec 21, 2017 4:09 pm
Forum: New Users' experiences
Topic: Noise
Replies: 6
Views: 1614

Re: Noise

The best thing you can do is to put the PLC adapter into the trashcan. These kind of adapters belong to the worst noise generators I know. Powerlines are made for power and not for data transmission. They radiate the PLC-signal which disturbes your reception.
Replace them by WLAN or cable.

Wolfgang
by DF1KZ
Sun Dec 17, 2017 11:15 am
Forum: General
Topic: Antenna A and B mixup on RSP 2
Replies: 2
Views: 1062

Re: Antenna A and B mixup on RSP 2

Hello Ambrose,

Did you terminate Input A with 50 Ohms or did you leave it open?
Imho there is some (weak) internal coupling between the ports.

Wolfgang
by DF1KZ
Sun Dec 17, 2017 11:07 am
Forum: General
Topic: Hi Z green connector
Replies: 1
Views: 856

Re: Hi Z green connector

Hi Mardy

I ordered them at BANGGOOD, product ID:1041639

Wolfgang
by DF1KZ
Sat Nov 04, 2017 9:29 am
Forum: SDRuno
Topic: SDRUno 1.2 issues
Replies: 32
Views: 8349

Re: SDRUno 1.2 issues

Hello SDRplay - Team, Concerning the calibration issue: The calibration value (here: -0,441 ppm) is stored in Main Settings "Crystal Calibration". The value is right and not changed by the bug. After "Stop" / "Play" the value is ignored. The status of "LO LOCK"...
by DF1KZ
Fri Nov 03, 2017 6:08 pm
Forum: General
Topic: Listen to meteors, the moon and satellites
Replies: 0
Views: 804

Listen to meteors, the moon and satellites

The RSP2 is a very sensitive VHF-receiver. Using the signals of the GRAVES RADAR near Dijon (France) on 143.050 (CW BW=750 or more) you can easily receive the echoes from meteors or even the moon. I live about 450km away from the radar station and receive the signals with the RSP2 (GR:38dB, MW/FM-Fi...
by DF1KZ
Fri Nov 03, 2017 5:26 pm
Forum: SDRuno
Topic: SDRUno 1.2 issues
Replies: 32
Views: 8349

Re: SDRUno 1.2 issues

Maybe another small bug:
The value of "Crystal Calibration" is ignored if you "Stop" and "Play" again.
The value is still there but you have to select the value and press "Enter". After that the calibration-value is effective again.

Wolfgang (DF1KZ)
by DF1KZ
Sat Oct 14, 2017 3:22 pm
Forum: New Users' experiences
Topic: HDSDR2 Waterfall screen noise with RSP2
Replies: 4
Views: 1799

Re: HDSDR2 Waterfall screen noise with RSP2

Hello Glenn, Welcome to the world of EMC. Many devices especially those cheap ones coming from Asia do not fulfil the requirements of the EMC-directive (Europe) or FCC (USA). They produce to much noise on the power-lines, the power-lines radiate this noise and you hear the harmonics of the switching...

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