[Lowfer] WM in EN90xn

[Michael Sapp]

OK Mike, I had a few other short traces overnite, but nothing real solid. 
Right now I just decided to turn off the 24V DC supply to the RAY6 based LF 
converter and run
on a pair of 17AH gel cells. It will be interesting to see if I can tell a 
background noise difference.  The 24V DC supply on the AC mains looks quiet 
on an O-scope, but range is limited to low millivolts for measurement 
purposes vs microvolts....and the nearby (4.5mi)  50KW station can put a 
detectable signal on a few inches of wire here....

See what happens.....

73 Mike tts



----- Original Message ----- 
From: "N8OOU" <n8oou at meekfarm.us>
To: "Discussion of the Lowfer (US, European, & UK) and MedFer bands" 
<lowfer at mailman.qth.net>
Sent: Tuesday, February 03, 2015 9:38 AM
Subject: Re: [Lowfer] WM in EN90xn


> Mike, Garry;
>
> Guys thanks for the captures overnight. I have compared them to a couple 
> made around Jan 10th, and they look fairly close to being the same.  I had 
> to do some re-building of the loading coil over the past couple weeks. 
> This capture helps confirm I'm still on the tracks.
>
> 73   de   N8OOU - Mike Meek
>
> On 02/03/2015 12:44 AM, Michael Sapp wrote:
>> Mike & All: Sorry last post I forgot to change the header title...
>>
>> Mike & All: Light WM traces in EN90xn....from about 0515 to 0600 UTC.... 
>> LF
>> converter output split with second receiver so the IF signal level is
>> reduced a bit....
>>
>> https://www.dropbox.com/s/lcrvaffb5l4cqmq/capt00019%20%282%29.jpg?dl=0
>>
>>
>> May be worth noting the path the XND in dm33 was also open at the time
>> (second rx) on the 630m band wspr2 mode
>>
>>
>> 73 Mike wa3tts
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