Search found 6 matches

by espenfjo
Tue Jan 22, 2019 3:37 pm
Forum: SDR Antennas
Topic: Coax longwire and impedance
Replies: 5
Views: 2975

Re: Coax longwire and impedance

Im using it as a "long wire", yes. I dont really have the space for creating a dipole (folded or not) tuned for 80m or lower. (20-30m and lower is what is most interesting for me). Its by the way about 65 feet (20 meters). About half is wound a couple of times between two beams on a balcony, so its ...
by espenfjo
Fri Jan 18, 2019 7:10 pm
Forum: SDR Antennas
Topic: Coax longwire and impedance
Replies: 5
Views: 2975

Re: Coax longwire and impedance

Mostly because I have 20m of coax lying around. I live in an apartment building, so I do not have any real possibilities for building a large antenna for LW/MW/SW. Streching a coax (or any kind of wire) out a window and about 7-10m to a balcony on the other hand should be doable. I also have the 1:9...
by espenfjo
Fri Jan 18, 2019 2:23 pm
Forum: SDR Antennas
Topic: Coax longwire and impedance
Replies: 5
Views: 2975

Coax longwire and impedance

Hi,
I have about 20m / 65ft of RG58C/U which I am using as a longwire. No feed wire, just the coax directly connected to the P an N terminals of the RSP 2.

How do I correctly calculate the impedance to ensure that I use the correct UnUn of this?
by espenfjo
Thu Jan 03, 2019 7:45 pm
Forum: SDR Antennas
Topic: RSP2 - A bit confused with connecting antennas
Replies: 4
Views: 3202

RSP2 - A bit confused with connecting antennas

Hi, I am a bit confused with connecting antennas to my RSP2 for HF/MW usage. I have tried to build a coax dipole using RG58, each element being around 10meters. It should be similar to this design, using about 13-18m of rg8 as a feed line. https://www.g4cqm.co.uk/G4CQM_COAXIAL_DIPOLE/G4CQM_COAXIAL_D...
by espenfjo
Tue Jan 01, 2019 11:56 am
Forum: SDRplay related
Topic: Grounding the RSP2pro and stray currents
Replies: 1
Views: 1082

Grounding the RSP2pro and stray currents

Hi everyone, I live in an apartment complex without any good ways to ground my antennas. I've found that connecting the antenna ground to my radiator pipes really improves signal strength, the only problem is that it seems like those pipes carry a lot of current with them. I measured with a clamp-on...
by espenfjo
Fri Dec 28, 2018 7:50 pm
Forum: New Users' experiences
Topic: Problems on Windows 10
Replies: 3
Views: 1818

Re: Problems on Windows 10

Its the same for me on a stationary with an old asus mobo, on both USB2 and USB3 ports.