Corollary: You can't have too many antennas except when they
interfere with each other which they often do on Topband where
a wavelength is approximately 500 feet...
Even on 20 meters, the pattern of a Yagi is noticeably degraded
when it points through another 20 meter Yagi or tribander 500 feet
distant or more.
Fortunately most Topband receiving antennas don't interfere with
each other -- except at extremely close spacing -- because their
mutual impedance is negligible. But transmitting antennas and
other antenna-like radiators such as power lines -- even 1000 feet
away or more -- can significantly degrade the directivity of
Topband receiving antennas.
73
Frank
W3LPL
----- Original Message -----
From: "David Olean" <k1whs@metrocast.net>
To: "Dennis Egan" <egan.dennis88@gmail.com>, "Steve Ireland"
<vk6vz@arach.net.au>
Cc: "Topband reflector" <topband@contesting.com>
Sent: Friday, November 16, 2018 4:50:42 PM
Subject: Re: Topband: Propagation improves from VK6 into Europe
Hi Steve
I missed my sunset as I had a doctor's appt. I had a bad case of Lyme
Disease in 2017, and am still taking meds. The doctor was thrilled with
my recent bloodwork and figures that I have an almost clean slate. I am
feeling great for the first time since 2016! The bad news was the
appointment was right at sunset so no listening for LP. I am
contemplating a low wire antenna. I just need to find a good spot away
from all the beverages. You can't have too many antennas.
Dave K1WHS
On 11/16/2018 2:56 AM, Dennis Egan wrote:
> Steve
>
> I did hear you but you couldn’t hear me. Big European pileup on you.
>
> Dennis W1UE
>
> Sent from my iPhone
>
>> On Nov 15, 2018, at 20:31, Steve Ireland <vk6vz@arach.net.au> wrote:
>>
>> G’day
>>
>> Although there was no LP prop into NA today, I had the best European
>> propagation since 1 November, working 12 Europeans.
>>
>> The prop was very much spotlight, favouring Italy, Serbia, Hungary and
>> Greece (SV1EOG/7 was a genuine 589), but I did work R8, OH and SM as well.
>>
>> Let’s hope 160m can surprise us in the next few days.
>>
>> Vy 73
>>
>> Steve, VK6VZ
>>
>> ---
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