Search found 85 matches

by P-40 Warhawk
Tue Aug 20, 2019 3:01 pm
Forum: Antennas
Topic: Antenna tuning, impedance matching, baluns, common mode currents, my head exploding...
Replies: 7
Views: 2150

Re: Antenna tuning, impedance matching, baluns, common mode currents, my head exploding...

Gentlemen . This why people bang their their heads on the desk . Their is a engineering term called K.I.S.S. it's a anachronism for keep it simple stupid . All the person would like to know is what kind of impedance matching device for a given antenna should be used . Now I would think he is talking...
by P-40 Warhawk
Fri Jun 07, 2019 12:00 pm
Forum: User Projects
Topic: How to buy an SDR chip
Replies: 9
Views: 1691

Re: How to buy an SDR chip

This I was surfing the web this morning and I came across this (The RadioBoard Forums ) this page http://theradioboard.com/rb/viewtopic.php?t=8759 . I found this by doing a Google search. sdr forums
by P-40 Warhawk
Fri May 31, 2019 11:35 am
Forum: User Projects
Topic: How to buy an SDR chip
Replies: 9
Views: 1691

Re: How to buy an SDR chip

Google the chip number and see if any the parts house have any for sale ,also you can buy a cheap dongle and scavenge the part from it .
by P-40 Warhawk
Thu May 23, 2019 1:36 pm
Forum: Other SDR Devices
Topic: Airspy HF+ Discovery
Replies: 1
Views: 903

Airspy HF+ Discovery

This morning when I opened my email I saw this letter from Airspy ( Dear Airspy fans, Thank you for your patience and your encouragement during all these years! We are pleased to announce the availability of the Airspy HF+ Discovery on pre-order. We got everything ready for delivery in about one mon...
by P-40 Warhawk
Sun Apr 28, 2019 11:57 am
Forum: Other SDR Devices
Topic: RTL-SDR Wideband LNA
Replies: 3
Views: 1085

Re: RTL-SDR Wideband LNA

Good morning. What I have is a ten foot ground rod down in the ground and the cox cable shield is connected to it . The lighting bolt went right by my window, it took out ten blocks of Cox cable service , my cable modem , my satellite receiver , Airspy HF+ , the V3 dongle and , Wideband LNA , last o...
by P-40 Warhawk
Sat Apr 27, 2019 1:42 pm
Forum: Other SDR Devices
Topic: RTL-SDR Wideband LNA
Replies: 3
Views: 1085

RTL-SDR Wideband LNA

Hi . At the first week April we had a bad storm come through were I live and the lighting took out the RTL-SDR Wideband LNA that I had . The ESD NOTE:that is in the information about the LNA states that the antenna needs to be grounded . Now my antenna is a diskcone and it is under the roof of my ho...
by P-40 Warhawk
Sat Mar 30, 2019 3:17 pm
Forum: RTL-SDR Discussion
Topic: Question about BIAS-TEE in V3
Replies: 5
Views: 1124

Re: Question about BIAS-TEE in V3

YouR right . In your case I don't how to advise you . Now the places that I gave you to checkout also have splitter's , maybe you can find something that would be of help . Good Luck . HO buy the way Their is a splitter that has one side that can carry a DC voltage and the other side blocks DC , wou...
by P-40 Warhawk
Sat Mar 30, 2019 2:01 pm
Forum: RTL-SDR Discussion
Topic: Question about BIAS-TEE in V3
Replies: 5
Views: 1124

Re: Question about BIAS-TEE in V3

Hi , I would go with RF switches , that way the DC voltage goes were you want it to go and not were you don't want it to go . Also you would lose 4 DB on each output with a splitter . Now if you are using 50 ohm cable than you can get the switches from www.dxengineering.com/ and http://www.mfjenterp...
by P-40 Warhawk
Thu Feb 28, 2019 6:11 pm
Forum: RTL-SDR Discussion
Topic: V3 dongle from Amazon
Replies: 6
Views: 1932

Re: V3 dongle from Amazon

Hi Moderate from the rtlsdrblog. I went to the RTL-SDR store and clicked on your store and clicked on Amazon . Below is a cope of the sale slip that was emailed to me from Amazon . The Dongle come from you people . Robert Amazon Order Confirmation Hello Robert Symanek, Thank you for shopping with us...
by P-40 Warhawk
Tue Feb 26, 2019 2:42 pm
Forum: RTL-SDR Discussion
Topic: V3 dongle from Amazon
Replies: 6
Views: 1932

V3 dongle from Amazon

Hi Everybody . I bought a V3 dongle from Amazon , not a RTL-SDR offering . That was a mistake , Don't buy unless it's from RTL+SDR . The person that was sell it had put a jumper in it and the tuner sensitivity was low . Now to what my question is , The person that was selling the dongle had mod it A...