[TowerTalk] VNA

[Jeff]

To the gentlemen's question, if you are not near a BC station and the use is 
primarly outside, the 259 is really a good box.  But it really depends on 
your intended application and importantly if you want a stand-alone unit or 
something that is PC powered.  All of these suggestions are good but the 
best choice would be driven by economics and need.

73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie

-----Original Message----- 
From: Wes Stewart
Sent: Tuesday, October 31, 2017 5:00 PM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] VNA

I have no knowledge of MFJ equipment. With a real vector analyzer, 
calibrated
with OSL standards, I would expect that the effects of any filtering could 
be
mitigated, although dynamic range and possibly stability would likely be
compromised.

Wes  N7WS


On 10/31/2017 11:17 AM, Jim Thomson wrote:
> Date: Tue, 31 Oct 2017 05:24:40 -0700
> From: Wes Stewart <wes_n7ws at triconet.org>
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] VNA
>
> <I second Jim's remarks about the VNWA 3E (and Dan's, AC6LA, software).? I 
> use
> mine in the field with a 10" touch screen tablet computer (Motion) 
> running, uck,
> Windows 10.? Not quite as friendly as a laptop but much more rugged.? If 
> need
> be, I can save measurement data in a file and transfer it to the desk 
> computer
> via Wi-Fi for additional analysis.
>
> I have a couple of 50KW BC stations nearby that I've measured at -3dBm on 
> my
> inverted-l.? As long as I start a sweep at 1.7 MHz or above I have no 
> issue with
> them.
>
> Wes? N7WS
>
> ## I thought the 259B and 259C had an optional HP filter for em..to kill 
> AM broadcast ?
> Thought it had a cut off of 1.8 mhz.  Or will a HP filter screw up the 
> readings on test gear,
> like vnas  etc ?
>
> Jim   VE7RF
>
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