[VicPiMakers Projects] Fwd: a couple of quick questions

[Dave Gates]

Thanks Deid - will check out the videos this weekend.

Dave.

On 2022-04-14 4:30 a.m., Deid Reimer wrote:
> Hi Dave,
>
> I don't have a spectrum analyzer, although it is on my list of things 
> to acquire soon.
>
> A couple of videos worth watching on building antennas.   The bottom 
> line, if you build it to specs the vswr should be acceptable.
>
> https://youtu.be/eQEmFlMW50o
>
> https://youtu.be/6cVYsHCLKq8
>
>
> Deid
> va7rei
> On Apr. 13, 2022, at 10:25 p.m., George Bowden <gtbowdeng at gmail.com> 
> wrote:
>
>     Hi Dave.  I've forwarded your query to the projects group.   That
>     is the best place to get a response, where more people can see it...
>     I dont think a spectrum analyser is needed.  You could attach a
>     dipole of the right length, depending on the frequency you choose
>     for the lora .  at 915 mhz it could be made from a couple pieces
>     of copper wire, attached with a uFL to the lora module, if that is
>     what it has...
>     https://www.omnicalculator.com/physics/dipole is a dipole
>     calculator, which says two wires each 16.4 cm long would make a
>     dipole.
>     Deid is the one to answer antenna questions...  He's a ham operator.
>
>     ---------- Forwarded message ---------
>     From: *Dave Gates* <dbgates at gmail.com>
>     Date: Wed, Apr 13, 2022 at 8:52 PM
>     Subject: a couple of quick questions
>     To: George Bowden <gtbowdeng at gmail.com>
>
>
>     Hi George,
>
>     First: does anyone in the group have a spectrum analyzer?
>
>     The antenna with the LoRa modules looks like the recommended one
>     (as per
>     the video you sent me) but I have no way of knowing for sure... the
>     video mentioned that if enough of the power sent to the antenna is
>     reflected back, it can heat up and even damage the circuit.
>
>     ... I may be able to borrow a FLIR camera from a friend of mine - so
>     second question: if a spectrum analyzer is not available, what are
>     your
>     thoughts on using a FLIR camera to avoid damage?
>
>     Thanks!
>     Dave.
>
>
>
>     -- 
>     George Bowden  250-893-7423
>     Victoria BC
>
>     -- 
>     Projects mailing list
>     Projects at vicpimakers.ca
>     http://vicpimakers.ca/mailman/listinfo/projects_vicpimakers.ca
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://vicpimakers.ca/pipermail/projects_vicpimakers.ca/attachments/20220415/be487109/attachment.htm>