<div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif">Most of the wifi amplifiers should also cover the ham radio band. You may have to modify the activation circuit, because they use signal sensing to switch between RX and TX</div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">Jacek</div><div class="gmail_default" style="font-family:tahoma,sans-serif">kw4ep</div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, 30 Oct 2022 at 21:11, Martin <<a href="mailto:dcmk1mr2@gmail.com">dcmk1mr2@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Sorta related - does anyone know of amps in the 13 cm ham range that put out more than a 0.5 W?<br><br>Martin W6MRR</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Oct 30, 2022 at 2:05 PM Samudra Haque <<a href="mailto:samudra.haque@gmail.com" target="_blank">samudra.haque@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Phased arrays? PA controller chips are plentiful</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Oct 30, 2022, 15:53 Alex Fraser <<a href="mailto:beatnic@comcast.net" target="_blank">beatnic@comcast.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p><font face="Comic Sans MS">You can fit a whole bunch of 13
centimeter band antennas in a small plastic jar. That's just
what I did when I scrapped out some older laptops. The antennas
are usually behind the display screen so when it is being used
the antennas sit up a bit from your desk. The tiny coax runs
behind the screen and next to the hinges to the WiFi card on the
laptop's motherboard.</font></p>
<p><font face="Comic Sans MS">It looks to me like some of these
antennas are J Poles, I hope you can see where I circled the
matching coax location.</font></p>
<p><font face="Comic Sans MS">My application for these antennas is
as replacements for busted WiFi antennas on a DJI Phantom 3
drones video and telemetry download radio. I bought the drone
used and it had been in a crash, so I got a good price. The
original antennas had their cables yanked apart. The originals
were panel antennas and go used for $20 ~ $30. I might try both
kinds and see how they work in the crazy drone environment.
Drones move around so polarity and pattern have to be figured
into the antennas. There is a lot of ham input into the drone
hobby. Having almost 40 years experience playing with antennas
sure helps...</font></p>
<p><br>
</p>
<img alt="Antennas" width="800" height="1066">
</div>
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