[Elecraft] Babies at play as seen on the P3

[Dave Cole (NK7Z)]

Those are probably SMPSs.

73s and thanks,
Dave
NK7Z
http://www.nk7z.net

On 10/29/2017 03:59 PM, lmarion wrote:
> Interesting.  These are RF peaks, that move across the 1.8 to 2 MHz 
> band, for instance.  They often stop on QSOs in progress, or flow thru 
> them, sometimes reverse, may disappear, may take off in either 
> direction. I assumed they are human caused.  ???
> 
> 73 Leroy
> 
> -----Original Message----- From: Drew AF2Z
> Sent: Sunday, October 29, 2017 4:37 PM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] Babies at play as seen on the P3
> 
> There are ionospheric chirp sweepers that go through the hf spectrum
> every couple of minutes. They sound like someone lightly clearing his
> throat. Have no idea what it looks like on the pan display. On a given
> frequency you'll hear the chirp at the exact same time every couple of
> minutes
> 
> 73,
> Drew
> AF2Z
> 
> 
> On 10/29/17 17:02, Ken G Kopp wrote:
>> Maybe "sweeping" for checking antenna SWR .... or "memory tuning'' of 
>> PA's
>> and antenna tuners, as Elecraft units do. (;-)
>>
>> 73
>>
>> K0PP
>>
>> On Oct 29, 2017 14:05, "lmarion" <lmarion at mt.net> wrote:
>>
>>> the ones I can't figure out are the key  down and then sweep across the
>>> band with their VFO knob. I have bee seeing them since I had a soft rock
>>> pan display and now on the P3. They are almost continuous. they stop
>>> occasionally to QRM a QSO and then keep going.
>>>
> 
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