Search found 16 matches

by KD7CAO
Sun May 24, 2020 2:36 am
Forum: Antennas
Topic: Suggestions for antennas to use with four channel coherent RTL-SDR
Replies: 8
Views: 4073

Re: Suggestions for antennas to use with four channel coherent RTL-SDR

I have a new four channel coherent RTL-SDR (Kerberos) that came without antennas. I welcome any suggestions for the type of antennas that I should use with this radio. I will need four identical antennas that will attach to the female SMA connectors on the radio. Thank you, Justin Smith Here is wha...
by KD7CAO
Sun May 24, 2020 2:30 am
Forum: Antennas
Topic: Static shock while connecting ground-wire to radio?
Replies: 12
Views: 10804

Re: Static shock while connecting ground-wire to radio?

Thanks Hotpaw2 :) I already have a ground-wire permanently connected to the shield of the antenna (And since it's a loop-antenna thus also automatically to the lead wire) But I have ordered a galvanic isolator and also a surge-protector, which are to sit on the cable near the radio, so I'm currentl...
by KD7CAO
Sun May 24, 2020 2:24 am
Forum: Antennas
Topic: Disappointment with my new 2M antenna
Replies: 2
Views: 1119

Re: Disappointment with my new 2M antenna

I had to go lookup UR67 and found the specifications. It is similar to RG-213 which is not a great cable for long distances. RG-213 has a loss of about 2.8 db per 100 feet. Depending on how long your run is this could be your issue. At VHF I strongly recommend looking at something in the LMR-400 ran...
by KD7CAO
Sun May 24, 2020 2:18 am
Forum: Antennas
Topic: Great Antennas for a variety of applications.
Replies: 0
Views: 329

Great Antennas for a variety of applications.

If you are looking for an antenna that is easy to setup and use for a variety of applications then I would highly recommend Arrow Antennas. As an Amateur Radio Operator I have had the pleasure of using a variety of their antennas in both my hobbies and professional life. The team goes above and beyo...
by KD7CAO
Sun May 24, 2020 2:11 am
Forum: KerberosSDR
Topic: Sources for antennas?
Replies: 33
Views: 12738

Re: Sources for antennas?

Arrow Antennas, they are making an antenna specifically for the KSDR now. http://arrowantennas.com/arrowii/sdr.html
by KD7CAO
Sat May 23, 2020 11:35 pm
Forum: KerberosSDR
Topic: Power connection question
Replies: 28
Views: 9114

Re: Power connection question

Sorry to resurrect an older thread. Is it possible to supply power anywhere else than the micro-USB port on the v2? I am finding this connector to be finicky and trying to get my system setup for mobile use. Twice now discovered my issue was with the cable backing out. Short of hot-gluing it in plac...
by KD7CAO
Sat May 23, 2020 11:25 pm
Forum: KerberosSDR
Topic: What tablet would you recommend?
Replies: 7
Views: 2956

Re: What tablet would you recommend?

I am using the Samsung Tab S4 with AT&T FirstNet service. It works very well and provides the Wi-Fi hotspot so that mapping functions can be real-time. I will say however, that I am likely going to get a Laptop setup and run an Ethernet cable to the configuration just to improve issues where the tab...
by KD7CAO
Sat May 23, 2020 11:19 pm
Forum: KerberosSDR
Topic: External antenna switches for the first units
Replies: 4
Views: 1384

Re: External antenna switches for the first units

Where do we get the RF Switches for the version 2? I keep hearing from others that have these units that they have it, but locating them is difficult. I heard that someone has written a custom code add-on that switches the port to the terminator for calibration and back to the antennas when done.
by KD7CAO
Sun Apr 19, 2020 5:32 pm
Forum: KerberosSDR
Topic: Current Version
Replies: 2
Views: 1016

Re: Current Version

Sorry for delay responding. The notifications for this forum do not seem to be working correctly. I misunderstood thought the bug with the button was fixed. Yes I was using VNC. It was not displaying at 1080P. I bombed that microSD and reinstalled with 1.6.1 as a fresh download and tried again where...
by KD7CAO
Sat Apr 11, 2020 3:29 pm
Forum: KerberosSDR
Topic: New user help (Sync, Heat, KerberosAndroid hotspot)
Replies: 3
Views: 4822

Re: New user help (Sync, Heat, KerberosAndroid hotspot)

Thank you, due to an issue I have had with the Pi4 not starting if the KSDR is receiving power through its input power connector I figured it wasn't needed. I will have to try and power up the board separately and see if that helps. Perhaps pull 5V off my powerhat so they are synced power supplies.