The whip can be handy, especially when traveling. Unless you're going
to transmit, I'd recommend hiding a discone antenna in your attic (this
wife will not like seeing this every day.) The wideband freq response
is great, although there is no gain. The ST4 costs under $70,
http://www.antennacraft.net/Antennas/AntennasScanner.html , and does a
good job. If you're handy, you can make your own discone using the
calculator on this page, http://www.changpuak.ch/electronics/calc_11.php
, I made a discone antenna that has very good performance from 600 Mhz
to just under 6 Ghz. I made this out of sheet metal and it cost me
under $45.
Wideband amps are really getting cheap too. QST's July 2014 edition had
the schematics and parts list for an amp that will work up to 4 Ghz and
6 Ghz.
Rich
On 9/28/2014 2:38 PM, Matthias Wolf wrote:
Hi Mike & list,
I just wanted to let you know that I also received a shorted ANT500
(got mine from Store4Geeks in Sweden). Until I found out today, my
experiences with the tutorials and HackRF were very, very
discouraging. I only got a huge DC spike in the center of my spectrum
but no usable signals at all.
I got this behaviour across all systems (including Pentoo) and all SDR
applications. The FAQ made me think that I had a firmware / library
mismatch problem, so I sat down and went through the hassle of
manually compiling the newest versions. Ah, my wife says hello. Turns
out she's not quite happy having me in the basement all the time.
So, for the sake of other husbands' wellbeing, I would like to
encourage you to update the FAQ to include these particular symptoms
together with the advice to measure the antenna and replace it with a
paperclip.
Unfortunately that's not all. When I tried to repair the ANT500 by
myself (effectively voiding the warranty), the spring decided to jump
away and to hide somewere beneath my furniture. So now it's useless
AND missing a part. Could you help me out somehow? Are you shipping
spare parts to Europe by any chance?
Thanks
Matt
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