[Lowfer] WG2XLP. 137.775 kHz

Pat Bunn pbunn at matrixei.com
Thu Jan 9 21:23:39 EST 2014


Thanks for the report Mike. I am running a Class D transmitter at about 200 watts. Antenna is a 55 foot top loaded vertical with a 3.3 mH loading coil and a approx. 400 uH variometer with a matching transformer per W1VDs website.

Pat
N4LTA
WG2XCT
WG2XLP

Sent from my iPhone

On Jan 9, 2014, at 8:12 PM, Michael Sapp <wa3tts at verizon.net> wrote:

> Pat: Peaking -49 in ARGO QRSS60 slow at 137.775 in EN90xn. Background noise peaking around -62, floor around -80.
> 
> Mike wa3tts
> 
> 
> ----- Original Message ----- From: "Pat Bunn" <pbunn at matrixei.com>
> To: "Discussion of the Lowfer (US, European, &amp; UK) and MedFer bands" <lowfer at mailman.qth.net>
> Sent: Thursday, January 09, 2014 7:24 PM
> Subject: Re: [Lowfer] WG2XLP. 137.775 kHz
> 
> 
>> I just increased the power to 200 watts and moved the frequency to 137.775 to move more into the window.
>> 
>> Pat
>> XLP
>> 
>> Sent from my iPhone
>> 
>> On Jan 9, 2014, at 7:18 PM, Michael Sapp <wa3tts at verizon.net> wrote:
>> 
>>> Pat & Mitch: Also listening here. I have one rx setup on wspr-15 for DK7FC and the other on 137.770 QRSS60.  I'm listening on the NE transformer, but the F/B is not that great at 137 so I should here something....
>>> 
>>> Mike wa3tts
>>> 
>>> ----- Original Message ----- From: "Mitch Powell" <mitch.powell at sympatico.ca>
>>> To: "Discussion of the Lowfer (US, European, &amp; UK) and MedFer bands" <lowfer at mailman.qth.net>
>>> Sent: Thursday, January 09, 2014 6:30 PM
>>> Subject: Re: [Lowfer] WG2XLP. 137.770 KHz
>>> 
>>> 
>>>> What mode are you transmitting Pat ? Listening now.
>>>> Mitch
>>>> On 2014-01-09, at 5:34 PM, Pat Bunn wrote:
>>>> 
>>>>> Dex.
>>>>> 
>>>>> I am testing at 137770 Hz at about 90 watts. Blew a set of fets earlier at 250 watts. Current was low so I  expect it was over voltage. My antenna is resonant but the matching transformer can do no better than 1.3: 1. I am out of the 34N20 fets so I installed a set of 30N40 that are a little harder to drive but good for twice the voltage. So far so good
>>>>> 
>>>>> Any reports would be appreciated. My first transmissions with WG2XLP
>>>> 
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