Topband: Topband - Stew Perry event just 48 hours away

[Jim Brown]

And Robin is a guy who's been on these trips.

73, Jim K9YC

On 10/21/2022 11:06 AM, Robin wrote:
> And that period at and after sunrise is MUCH quieter considering that 
> more than half of the directions for propagated noise sources have been 
> reduced or eliminated.  Depending on where you are that reduction can be 
> quite dramatic, again indicating the need for experienced topband 
> operators on DXpeditions.- and operational planning that includes the 
> "extra" time on the lowbands.  The time at sunrise +/- 2 hours is when 
> the maximum possible number of expedition stations should be fully 
> manned and active.  "Home" stations with directional advantages can 
> benefit similarly if not subjected to "urban" noise floor limiting.
> 
> Robin, WA6CDR
> 
> 
> 
> ----- Original Message ----- From: "Jim Brown" <jim at audiosystemsgroup.com>
> To: <topband at contesting.com>
> Sent: Friday, October 21, 2022 10:34
> Subject: Re: Topband: Topband - Stew Perry event just 48 hours away
> 
> 
>> On 10/21/2022 10:18 AM, Mark Connelly via Topband wrote:
>>> DXpedition set-ups are typically at low noise coastal or 
>>> high-altitude sites not near urban RF congestion. "Real" antennas, 
>>> i.e. with decent gain and directivity, are typically used. For these 
>>> reasons the short duration DXpedition receivers usually blow the 
>>> doors off what "permanent" sites offer.
>>
>> YES! I often find that I can work the better expeditions QRP after the 
>> initial rush has died down, even on Topband.
>>
>> Where this breaks down is when expeditions QSY from lower bands at the 
>> first sign of daylight,  failing to understand that gray line 
>> propagation is usually strongest on the daylight side of the 
>> terminator! On Topband, it's often great for 30-45 minutes, on 80 it's 
>> an hour, on 40 it's two hours.
>>
>> 73, Jim K9YC
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