[Antennas] Return Loss Bridge Construction

2002年5月25日 11:37:37 -0700

Hello everyone,
 I am very interested in building a return loss bridge to help with 
antenna experimentation, especially in the VHF/UHF region. The 
designs I'm interested in are at:
 http://www.qsl.net/n9zia/wireless/appendixF.html
	under "return loss bridge" and "Antenna Analyzer"
 The circuits are deceptively simple, so I am wondering how to 
build a quality bridge with good directivity. There are some photos 
at the link above, but they aren't really detailed enough.
 Can anyone offer advice/resources for the sort of 
construction practices that would need to be followed in order to 
build a good bridge? I don't really have the 120ドル or so for a used 
bridge much less the 300ドル+ for a new one.
 Of course, if anyone has other circuits they like PLEASE 
send them along. I haven't found much beyond what I posted 
above. I'm more interested in the resistive type rather that ones 
that use a balun transformer.
 I subscribe to the digest, so feel free to reply directly as well 
as to the list. Have a wonderful holiday weekend.
 Thanks!
 Dennis
-----------------
"If you can remain calm, you just don't have all the facts"
Dennis Wade
KG6ZI
Carmichael, CA