[Lowfer] 33.950

[Michael Sapp]

Same here, QRV on 29.500 +/- in ARGO  in EN90xn......Mike wa3tts


----- Original Message ----- 
From: "Pat Bunn" <pbunn at matrixei.com>
To: <dexter.mc at gmail.com>; "Discussion of the Lowfer (US, European, &amp; 
UK) and MedFer bands" <lowfer at mailman.qth.net>
Sent: Thursday, March 13, 2014 3:41 PM
Subject: Re: [Lowfer] 33.950


>I just set up the receiver and ARGO. Will listen for you on LSB . I'll let 
>you know
>
> Pat
>
> Sent from my iPhone
>
> On Mar 13, 2014, at 10:23 AM, pbunn <pbunn at matrixei.com> wrote:
>
>> Dex,
>>
>> I'd be glad to fire up my receiver at noon and let you test as long as 
>> you like at a shorter distance. Let me know and also the mode.
>>
>> Pat
>> N4LTA
>>
>> -----Original Message-----
>> From: lowfer-bounces at mailman.qth.net 
>> [mailto:lowfer-bounces at mailman.qth.net] On Behalf Of Dexter McIntyre 
>> W4DEX
>> Sent: Thursday, March 13, 2014 9:01 AM
>> To: Discussion of the Lowfer (US, European, &amp; UK) and MedFer bands
>> Subject: Re: [Lowfer] 33.950
>>
>> Michael Sapp wrote:
>>> Dex, nothing observed on 33.950 last nite....
>> Mike,
>>
>> I did a 25 hours transmission on 33.950 on Tuesday night.  Neither you or 
>> Garry saw the signal.  However just to prove I was transmitting I 
>> received a report from Paul Nicholson in Todmorden, UK.  But of course 
>> Paul is doing much longer term signal processing.  Also what puzzles me 
>> is that on the night before I was transmitting OP2H and got no decodes 
>> but Paul noticed a signal on 29.500 while analyzing Bob's transmission.
>> When I told Paul I was transmitting OP2H he used the recording and was 
>> able to decode my OP2H signal using deep search.
>>
>> I remain puzzled therefor all is normal.
>>
>> Below is what Paul posted on the rsgb_lf_group reflector:
>>
>> "I can report reception of some VLF signals from Dex W4DEX as WH2XBA/4 
>> during the previous two nights.
>>
>> Sending OP-2H with 100W at 29500 Hz from 2014-03-11 03:00 onwards 
>> produced a signal in Todmorden which averaged 0.135 fT
>>
>>  http://abelian.org/vlf/tmp/29500_140311a.gif
>>  http://abelian.org/vlf/tmp/29500_140311b.gif
>>
>> and S/N was 16.2dB in 125uHz.
>>
>> The transmission began at 23:00 UT with 50W carrier until
>> 02:00 when it switched to 100W of OP-2H.
>>
>> The signal is only slightly weaker than WH2XBA/1 transmitting at the same 
>> time on 29499 Hz. /1 was averaging 0.146 fT over the same period.
>>
>> I sent the signal data to Markus DF6NM who was able to get a good deep 
>> search detection out of it:
>>
>> 2014-03-11 05:14:00 WH4XBA ... -55.0dBOp 100% 15.7dB
>>
>> Measurements ended before the signal vanished because of the appearance 
>> of military signals on a nearby frequency.
>>
>> Interestingly, the phase of Dex's transmission was almost constant 
>> throughout the night:
>>
>> http://abelian.org/vlf/tmp/29500_140311c.gif
>>
>> Phase bounces around ± 25 degrees but there is no significant trend of 
>> the phase between 00:00 and 05:30.  What variation there is can be 
>> attributed to noise in the 1.66mHz measurement band.
>>
>> Then last night Dex made a transmission at 33950 Hz.  The 50W carrier 
>> appeared at 2014-03-12 03:00 UT and averaged 0.107 fT between 03:00 and 
>> 07:00 and S/N was 20.6dB in 69.4uHz bandwidth.
>>
>> Here too, the phase was fairly constant:
>>
>> http://abelian.org/vlf/tmp/33950_140312a.gif
>>
>> Path length WH2XBA/4 to Todmorden 53.703N 2.072W: 6194km.
>>
>> --
>> Paul Nicholson
>> --
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