IR doesn't work too well in sunlight. How about a neutrino beam from the
LHC?
Dave - W?LEV
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On Sun, Jan 26, 2020 at 6:43 PM Larry Rothman <nlroth@...> wrote:
So, the solution is an IR link?
Let's get designing folks!
On Sun, 26 Jan 2020 at 12:16 PM, David Eckhardt<davearea51a@...>
wrote: With an RF instrument such as a VNA that measures down into the
"noise", an
RF source in immediate proximity to low-level electronics is NOT a good
idea!! Compression of linear devices in the instrument are a real
possibility. IM with instrument-produced RF is also a distinct reality.
The input of the VNA is "wide open" with no 'filtering' to eliminate stray
RF energy. 2.4 or 5 GHz WiFi at +10 dBm in close proximity to the
electronics will completely spoil the operation of the VNA. NO! Bad
idea!!
Calibrate the VNA, attach it to the feedpoint of the antenna, raise the
antenna, and, well...... Better yet, as has been previously suggested,
read the impedance at the shack end of the feedline and propagate that
reading back to the antenna using SimSmith.
Dave - W?LEV
On Sun, Jan 26, 2020 at 3:39 AM gmendenh1947 <W8GNM@...> wrote:
Here is a feature idea for the next update of the NanoVNA design. If
the
NanoVNA had a WiFi transceiver on board in addition to the USB port, so
it
could be controlled remotely by NanoVNA Sharp, NanoVNA Saver, or similar
applications.
This would allow the NanoVNA to be attached directly to the feedpoint of
a
multiband antenna and hoisted with the antenna into the operating
position,
thereby eliminating the complication of transmission line normalizations
over multiple frequency bands. The unit could be programmed remotely and
the data could be captured remotely.
I would be willing to pay a significant premium for this capability.
--
*Dave - W?LEV*
*Just Let Darwin Work*
*Just Think*
--
*Dave - W?LEV*
*Just Let Darwin Work*
*Just Think*
