Search found 20 matches

by Scannerz
Wed Dec 26, 2018 8:53 pm
Forum: SDRplay related
Topic: Google Map Display when using ADSB
Replies: 2
Views: 905

Re: Google Map Display when using ADSB

If you choose Planeplotter you will need to be careful of up dating your maps to often.
As i just received this following message yesterday.
by Scannerz
Tue Dec 25, 2018 8:56 pm
Forum: SDRplay related
Topic: Google Map Display when using ADSB
Replies: 2
Views: 905

Re: Google Map Display when using ADSB

Google Maps according to Virtual Radar Servers website, Now requires you to up load your credit card details so you can get a key to use there maps. They will charge you to use there maps if you go over a certain download limit. Virtual Radar now can use Leaflet style maps (free). Though this is a p...
by Scannerz
Sun Dec 09, 2018 9:08 pm
Forum: General
Topic: Dsd plus e sdr console v3
Replies: 2
Views: 1772

Re: Dsd plus e sdr console v3

I use vb-audio cable from http://www.vb-audio.com/cable/ Once setup open SPEAKERS in windows select RECORDING and select CABLE OUTPUT as default. If you get a lot of feedback, Make sure you mute WAVE. In windows PLAYBACK...Selecting your normal default sound playback device is fine. If you double cl...
by Scannerz
Sun Jun 17, 2018 10:39 pm
Forum: Spectrum Analysis
Topic: Spectrum Analyser - screen dumps
Replies: 12
Views: 8570

Re: Spectrum Analyser - screen dumps

The 2mhz High Pass test....forgot again.
by Scannerz
Sun Jun 17, 2018 10:37 pm
Forum: Spectrum Analysis
Topic: Spectrum Analyser - screen dumps
Replies: 12
Views: 8570

Re: Spectrum Analyser - screen dumps

Using a quick build cheap noise source circuit I found on the net, I ran a quick test of a 2mhz homemade High pass filter. The transistors I used were SS9018 vhf/uhf npn. The Noise circuit did not require any attenuation and I think it only draws 0.35mA at 9v. And goes up to about 500mhz. Noise circ...
by Scannerz
Fri Jun 01, 2018 11:21 pm
Forum: SDR Antennas
Topic: Cheap broadband planar elliptical dipole antenna
Replies: 7
Views: 4776

Re: Cheap broadband planar elliptical dipole antenna

In relation to F1BJB comments about the yagi are correct. So after some thought I figured that the extra reflector for the yagi is helpful for my use with a preamp (lna4all). The amp is adding 16 to 18db extra gain for the yagi`s designed for 1000mhz to 1600mhz. So I`m basically redirecting the adde...
by Scannerz
Sun May 27, 2018 12:07 am
Forum: SDR Antennas
Topic: Cheap broadband planar elliptical dipole antenna
Replies: 7
Views: 4776

Re: Cheap broadband planar elliptical dipole antenna

Maybe you are right though even without the extra reflector the yagi performs very well on L-Band. Yagis can receive from the back end though obviously its going to be poor. As I try to think outside the box i thought i`d give it a try. The yagi designs where done with this free program from John Dr...
by Scannerz
Fri May 18, 2018 10:05 pm
Forum: SDR Antennas
Topic: Cheap broadband planar elliptical dipole antenna
Replies: 7
Views: 4776

Re: Cheap broadband planar elliptical dipole antenna

Thanks Phil,
I have made some other small/simple improvements to other antennas.
One was adding an extra square plate Reflector to a 15 Element yagi for L-Band Aero signals.
Which in turn gave an extra 6dbi (One S point) increase in signal strength.

Picture included...

Tony from VK3.
by Scannerz
Thu May 17, 2018 5:47 am
Forum: SDR Antennas
Topic: Cheap broadband planar elliptical dipole antenna
Replies: 7
Views: 4776

Re: Cheap broadband planar elliptical dipole antenna

Forgot to add the links.... the goldern ratio oval https://www.blocklayer.com/oval-templates.aspx Also has lots of other interesting printable templates, rulers,star,cones =(thinking of discone base here) Also the larger the oval/disk the lower the frequency transmission starting point. ...............
by Scannerz
Fri May 11, 2018 11:18 pm
Forum: SDR Antennas
Topic: Cheap broadband planar elliptical dipole antenna
Replies: 7
Views: 4776

Re: Cheap broadband planar elliptical dipole antenna

SWR chart for the antenna using rigexpert 1400 overclocked to 2800mhz.
Readings from 1400 to 2800 are not realy supported though should be pretty close.
cheers Tony.

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