Discussion in 'Amateur Radio News' started by UT0UN, Nov 6, 2017.
A similar one can be obtained as kit from http://www.box73.de/product_info.php?products_id=3756. It works from 100kHz to 100MHz.
I bought and built this antenna analyzer from Box73. The kit is really just final assembly, and it went together in about an hour. I haven't had a chance to really put it through its paces yet, but it look like a great instrument. One negative, however, is that there's no way to connect it to a computer to do any fancy analysis. But, that shouldn't be a deal breaker.
FYI, we have been extensively using the Box73 analyzer and I highly recommend it for quality, calibrated results. It will not connect to a computer and has limited ability to save sweeps, but it's very handy and the measurements compare very favorably with a $$$$ Agilent FieldFox unit. (Comes with open/short/load cal kit!)
Very good friend I found it very cool.
Good video explaining the product and its capabilities. However, I find it odd to see the board nicely packed in Anti static bag is being unpacked and shown with hands without static straps! Not a good idea in locations where static electricity is prevalent. The board seems to have LSI chips sensitive to static and subject to damage if handled improperly.
Yes I agree, that is not a very good example to demonstrate the board in such a way. Be warned it happens so easily !. 73 de John G0WXU.
No link or photo in lead off post.
I am awaiting delivery of a more kit like VIA/VNA from K5BCQ and AQRP kits.
$110 with tiniest parts already soldered.
Will take another $40 or so for an enclosure and connectors.
I'll post when I get it going.
73, -bob ah7i
Only problem, it looks like it's for un-balanced coax line only. Useless for balanced feeders or balanced antenn.
Yes, this company likes to use resistive bridges for impedance measurement, which can provide good accuracy when measuring low SWRs.
But, balanced feeders are typically run with high SWRs, so another technique would be advisable. One idea may be to use multiple power sensors at known locations feeding back data using some form of wireless communication. It is hardly new, but it may now be practical with advances in cheap wireless technology.