[600MRG] 600MRG Digest, Vol 80, Issue 1

[eric]

One thing to be careful of when using neon lamps as RF indicators....be 
sure you're VERY loosely coupled to the antenna...because they generate 
LOTS of harmonics.  You wouldn't put a diode across your antenna, and an 
NE2 will do the same thing.


On 12/1/2017 11:39 AM, eric wrote:
> Ahh...a great idea...and a good way to help use up some of my dozens 
> of spare NE-2s :)
>
>
> On 12/1/2017 11:33 AM, Dave Riley wrote:
>> Andy - KU4XR - Tuning...
>>
>> /I use a bunch of NE-2 neon lamps in series on a plastic stick.. With 
>> a little power the bulb closest to the antenna voltage point lights 
>> up, and with a little more power then the next one lights and so on.. 
>> W1TAG has a nice RF ammeter project on his web site so I check 
>> resonance with the neons against where maximum current that is on the 
>> feedline... Since you are using a Tesla coil antenna then try the 
>> bulbs on the far side of the vario and the RF ammeter at the input of 
>> the vario... I'm using a loop with no feedline and the varicap is 
>> here in the shack... Hope this helps, Andy... DaveR aa1a... /
>>
>>
>> On 12/1/2017 1:00 PM, 600mrg-request at w7ekb.com wrote:
>>> Andy - KU4XR
>>
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