Search found 101 matches: discone

Searched query: discone

by ON5HB
Mon Feb 18, 2019 5:19 pm
Forum: SDR Antennas
Topic: Extending the range of a Discone antenna down to 3.6 MHz
Replies: 52
Views: 15547

Re: Extending the range of a Discone antenna down to 3.6 MHz

How long is your beverage?

As the signal level is far to low for a beverage, they are known for their better reception then e.g. a dipole.

Unless it's not meant to receive 80m.

I'm trying to figure out why the discone needs to do 80m if you have a beverage. It simply makes no sense.
by glovisol
Mon Feb 18, 2019 5:11 pm
Forum: SDR Antennas
Topic: Extending the range of a Discone antenna down to 3.6 MHz
Replies: 52
Views: 15547

Re: Extending the range of a Discone antenna down to 3.6 MHz

... my measurement. The comparison with the Beverage is NOT IMPORTANT per se , it just tells us that SIGNALS ARE PRESENT and therefore the test on the Discone antenna is valid. Now that the whip is back in, I shall do return loss measurements with the Network Analyser and report the results.
by ON5HB
Mon Feb 18, 2019 5:07 pm
Forum: SDR Antennas
Topic: Extending the range of a Discone antenna down to 3.6 MHz
Replies: 52
Views: 15547

Re: Extending the range of a Discone antenna down to 3.6 MHz

... reception range. Without it 80m is gone, so the chokes work else it wouldn't make any difference and the coax would have done reception. But the discone is vertical, so a direct comparisment is not real valid, some signals are better vertical others better horizontal. Real test would be DX signals ...
by glovisol
Mon Feb 18, 2019 4:54 pm
Forum: SDR Antennas
Topic: Extending the range of a Discone antenna down to 3.6 MHz
Replies: 52
Views: 15547

Re: Extending the range of a Discone antenna down to 3.6 MHz

NO WHIP / WHIP DISCONE ANTENNA TESTS - 3
by glovisol
Mon Feb 18, 2019 4:52 pm
Forum: SDR Antennas
Topic: Extending the range of a Discone antenna down to 3.6 MHz
Replies: 52
Views: 15547

Re: Extending the range of a Discone antenna down to 3.6 MHz

NO WHIP / WHIP DISCONE ANTENNA TESTS - 2
by glovisol
Mon Feb 18, 2019 4:50 pm
Forum: SDR Antennas
Topic: Extending the range of a Discone antenna down to 3.6 MHz
Replies: 52
Views: 15547

Re: Extending the range of a Discone antenna down to 3.6 MHz

NO WHIP / WHIP DISCONE ANTENNA TESTS - 1 Antenna test was done as follows. 1) Tests were done between 17:00 and 17:30 local time or 16:00 to 16:30 GMT. This hour was chosen as propagation on 3.6 MHz is already good and there are ...
by ON5HB
Mon Feb 18, 2019 4:04 pm
Forum: SDR Antennas
Topic: Extending the range of a Discone antenna down to 3.6 MHz
Replies: 52
Views: 15547

Re: Extending the range of a Discone antenna down to 3.6 MHz

Chokes are like filters, they bring signals down. But it never blocks 100%. It just depends how good your chokes are. Big signals are harder to block then noise. What they do is make the impedance of the outside of the cable higher than the cable itself, the more impedance you add the better the fil...
by glovisol
Mon Feb 18, 2019 2:50 pm
Forum: SDR Antennas
Topic: Extending the range of a Discone antenna down to 3.6 MHz
Replies: 52
Views: 15547

Re: Extending the range of a Discone antenna down to 3.6 MHz

... from the whip. Hi Bas, I really do not understand. If you look at previous posts, you advised me to install a coaxial choke at the base of the Discone antenna, which I did. This choke you said it would block signals picked up by the coaxial downlead: in fact, as I reported to you, the noise ...
by glovisol
Mon Feb 18, 2019 11:39 am
Forum: SDR Antennas
Topic: Extending the range of a Discone antenna down to 3.6 MHz
Replies: 52
Views: 15547

Re: Extending the range of a Discone antenna down to 3.6 MHz

I have removed the whip from the discone antenna, will check the 3.6 MHz reception this evening & report results tomorrow.
by ON5HB
Sun Feb 17, 2019 6:31 pm
Forum: SDR Antennas
Topic: Extending the range of a Discone antenna down to 3.6 MHz
Replies: 52
Views: 15547

Re: Extending the range of a Discone antenna down to 3.6 MHz

Did I win a fridge now? Or am I on to the next round? :lol:

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