Search found 186 matches

by snn47
Sun Nov 17, 2019 11:51 am
Forum: Antennas
Topic: FM antenna
Replies: 7
Views: 239

Re: FM antenna

In the past such Yagi Antenna was used in Europe: https://www.radiomuseum.org/r/rim_16_element_bereichs_yagi_uda_antenne_80371.html Often the can see nower days but the get not connected any more. Have you also read the the designated use of this antenna is Fernsehempfang which is TV-BC, but not FM...
by snn47
Sun Nov 17, 2019 11:47 am
Forum: RTL-SDR Discussion
Topic: OTA on DVB-C with RTL-SDR
Replies: 9
Views: 343

Re: OTA on DVB-C with RTL-SDR

Username wrote:
Sun Nov 17, 2019 10:24 am
If they are encrypted than you need also a way to decrypt the signals
The are that good Encrypt you will never decrypt them.
Currently maybee, but even unbreakable encryptions (since Enigma) have always been broken if there was an interest in dooing so.
by snn47
Sun Nov 17, 2019 10:42 am
Forum: Antennas
Topic: FM antenna
Replies: 7
Views: 239

Re: FM antenna

Looking at the link I am confused to find mainly recommendations for horizontally polarized antennas for FM-BC. Only TV-BC antenna use to my knowledge horizontal polarization. Passive car antennas for FM-BC have been by design vertically, until preamplifier were cheapenough to shorten antenna. In Eu...
by snn47
Sun Nov 17, 2019 10:18 am
Forum: RTL-SDR Discussion
Topic: distorted FM
Replies: 12
Views: 433

Re: distorted FM

Do you also have CATV/CATV in your room, than it might not be reflections/multipath but leackage from you cable system Could it be also intermodulation, did you try lower high gain setting or reducing receive signal e.g. by holding the antenna radiatior in your hand? Did you try it from somewhere el...
by snn47
Sun Nov 17, 2019 10:09 am
Forum: RTL-SDR Discussion
Topic: OTA on DVB-C with RTL-SDR
Replies: 9
Views: 343

DVB-C or DVB-C2, encrypted or free?

@y0r -Do you have DVB-C or DVB-C2? -Did you check if your DVB-C signals are encrypted? If they are encrypted than you need also a way to decrypt the signals General questions out of curiosity: - Are DVB-C(2) modulation parameter the same all over the world, or do they differ from region to region or...
by snn47
Sun Nov 17, 2019 9:19 am
Forum: Antennas
Topic: Looking for recommendations for mobile, wide band, rx only antennas.
Replies: 2
Views: 73

Re: Looking for recommendations for mobile, wide band, rx only antennas.

Short answer: Since you don't transmit, any wire of ~10 cm should receive well enough for you at the 1/4 mile you quoted. To have a truly wideband monopole antenna would require either the use of e.g. a Blade antenna e.g. CI-285 https://ab5d1ff47e2dcf84bb59-cd58ea74bce75265c2d3567bdc9977e9.ssl.cf2.r...
by snn47
Sun Nov 10, 2019 10:55 am
Forum: Antennas
Topic: Beginner HF/shortwave Antenna Recommendations?
Replies: 6
Views: 602

Re: Beginner HF/shortwave Antenna Recommendations?

I disagree too, magnetic antennas work also well indoor. There are two types of magnetic antennas: 1.untuned loops of one or more windings with or without ferrite core and 2. tuned single Loop with a circu mference of<1/4 Lambda for the highest frequency to be transmitted/ received loop type 2 works...
by snn47
Tue Oct 15, 2019 6:42 pm
Forum: Antennas
Topic: 1090 Antenna for Onbord use?
Replies: 2
Views: 331

Re: 1090 Antenna for Onbord use?

Fake, you will receive but not have the advertised gain. Gain depends on the antenna design but there are no miracles and gain requires certain physical dimsions. The first antenna is supposed to have "10 dBi" while the second antenna is supposed to have "7 dBi", but both have the same physical leng...
by snn47
Tue Oct 15, 2019 8:24 am
Forum: RTL-SDR Discussion
Topic: Dedicated laptop
Replies: 4
Views: 343

Re: Dedicated laptop

I forgot for the professional I own I could also download the service manuals. I also like the docking stations the older ones still provide leagcy interface support missing in todays PC. It is a shame that HP does not offer decent displays anymore except for the most expensive versions. All my HP W...
by snn47
Mon Oct 14, 2019 6:35 pm
Forum: RTL-SDR Discussion
Topic: Power consumption
Replies: 2
Views: 254

Re: Power consumption

Dongle power consumption vary between dongles, but should stay below the USB 2 specs of 5V and 0.5 A.