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Re: [Amps] Grid dip meters 2 models, opinions?

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Subject: Re: [Amps] Grid dip meters 2 models, opinions?
From: "Bob Moody" <>
Date: Tue, 5 Sep 2017 10:46:19 -0700
List-post: <>
Capability Creep.  
It's like the guy who wanted a crowbar to lift an engine 1/4" to replace motor 
mounts.  He's offered a new Whiz-Bang Green Fang transistorized crowbar so he 
can check his email, watch the ball game and place a bid at the car auction, 
while changing motor mounts.    

"Just gimme a crowbar!"


----- Original Message ----- 
From: "Jim Brown" <>
Cc: <>
Sent: Tuesday, September 05, 2017 9:51 AM
Subject: Re: [Amps] Grid dip meters 2 models, opinions?

> On 9/5/2017 2:47 AM, Conrad PA5Y wrote:
>> The VNWA3 needs a PC to work which is also not convenient 
> Understood.
>> and is also 10 times more expensive. 
> Yes. But as others have observed, it does SO much more that a GDO 
> cannot, or cannot do easily or with much precision. Like characterizing 
> components to include their parasitic R, L, and C, making TDR 
> measurements, swept antenna measurements that can exported to design 
> software like SimSmith, and 2-port measurements of networks and filters, 
> and of the crosstalk between antennas. A few months ago, I needed to 
> select capacitors from my "junk box" with low ESR at the frequency of 
> interest for a circuit. The VNWA 3e made that very easy. Years before, 
> I used my VNWA 3E to align bandpass filters, simultaneously monitoring 
> attenuation and return loss vs frequency as I adjusted the coils. Just 
> as I had done 50 years ago tuning up some of the first Drake TR3s. 
> There, the test equipment cost a LOT more.
> 73, Jim K9YC
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