[K3PZN-List] presentations
Curt Milton
wb8yyy at yahoo.com
Mon Jun 5 22:52:31 EDT 2017
Mark
you can get a feel for horizonal antenna height by examining dipole patterns versus height. A low antenna in wavelengths will radiate at a higher angle. Its been said that 40 feet is a reasonable height for a 20m beam or tribander. Higher is better. Some stations even have 2 identical beams at different heights.
many of us use verticals on the lower bands, since we are not willing to put up a 100 or 200 foot tall tower. I suggest reading up on HF antenna basics.
Good ideas to discuss these operating practices. But you can learn much by talking to other hams.
curt
Sent from Yahoo Mail on Android
On Mon, Jun 5, 2017 at 9:19 pm, Mark Rosenthal<marksro at comcast.net> wrote: Andy-
I have a question that may be a good topic. Or the answer may be so simple as to not warrant an entire meeting.
My current station consists of a radio, and a wire dipole. Pretty basic. The wife is allowing me a tower at our next house (moving in a year or so now that the kids are all out). So I need to decide how to select the correct antennas. From what I read in “the books”, proper beam height is 1.25 wavelengths. But looking online what I see are many stations with a single tower/antenna, a multi band yagi at one height. I assume that is a compromise for cost and space. But I am not sure. Is there another reason I am missing? And sometimes I see stations with a tower with a beam at a height other than 1.25 wavelength. Why? Am I missing something?
A talk on the “best” method of setting up a station using a tower with beams, what kind of beams at what heights, and what other types of antennas (such as 80M and 160M, receive antennas, etc) would be great.
Then another talk on station equipment. Such as antenna switching, automated band selection and sequencing to power down pre-amps, receive antennas, etc, use of filters (just for contesting/multiple transmitters at once? Or helpful for reducing noise for DX)? Other types of helpful electronics, etc.
I know those are pretty broad topics, but any help would be very useful.
73
Mark
W3MSR
> On Jun 4, 2017, at 10:16 PM, Andrew Leeds <wo3l at comcast.net> wrote:
>
> All,
> We've had a number of interesting pretensions over the last few months. July's presentation by Pete, WV3S, is the last one currently scheduled. Any volunteers for August and into the fall? Questions that can be turned into topics are welcome too.
>
> 73,
> Andy
>
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