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Author Topic: First HF antenna questions  (Read 525 times)
N3VMC
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« on: April 07, 2007, 07:16:11 AM »

Hello all,

Ive been looking for a good HF antenna for my newly purchased row home. Ive been looking at different types and manufactures but I cant really nail down what I would want to spend my $$$ on. Any ideas? I am still a Tech with a newly acquired Ten Tec Delta II and I am in the process of studying for my General. My house is a typical flat roof row home (80+ years old) and is 14'x45'. I do have a backyard also...about 30' to the back driveway.

Any ideas or comments are greatly appreciated!

73

Vince
N3VMC
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AA4PB
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« Reply #1 on: April 07, 2007, 07:36:36 AM »

That gives you 47 feet from corner to corner. That's enough space for a 40M dipole. One inexpensive option would be to put a support mast in each corner and put up a 40m/20m/15M/10M trapped dipole. You could also go with a fan dipole (multiple elements, one for each band).

Other options would include a loop around the building or a trapped vertical in the center (one that doesn't need radials).
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N3VMC
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« Reply #2 on: April 07, 2007, 08:00:17 AM »

I was looking at a few verticals...maybe an R8 or similar.

Oh I forgot to include the MFJ Tuner also.
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W2RDD
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« Reply #3 on: April 07, 2007, 08:13:28 AM »

Nice flat roof could be a home for doublet fed with twin lead thru a transmatch. Probably 10 thru 40 meters. Elevate the ends as much as possible.
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N3VMC
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« Reply #4 on: April 08, 2007, 08:41:45 AM »

Hoe about a folded dipole? The B&W 45 covers 40 down to 10 and 6mand is only 45 feet. I could mount it flat.
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AA4PB
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« Reply #5 on: April 08, 2007, 09:08:36 AM »

The B&W dipoles are rather inefficient antennas, especially on the lower bands, because they contain a resistor to increase the bandwidth. As you move lower in frequency more power is disipated as heat in the resistor and less power is radiated. They are a good compromise if you really need to work *any* frequency in their range rather than spot bands of frequencies such as the ham bands.

For ham band only use my choice would be a trapped dipole.
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2E0BSS
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« Reply #6 on: April 18, 2007, 03:49:40 AM »

G5RV half size will fit into that space. I have one which is ok and gives me satisfactory results. The US may call them something different.

Charlotte 2E0BSS
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N8UZE
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« Reply #7 on: April 18, 2007, 01:40:32 PM »

1. What are your particular goals at this time in operating HF?  Ragchewing, participating in nets, contesting, DXing, digital?

2.  How high can you get a dipole up?  If it is too low, a trapped vertical might be better.  However a dipole would probably be better if you can get some decent height on it.

You might want to consider two antennas.  For example, a G5RV and a vertical.  Some days one will be better and other days the other one will be better.
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KD7GKE
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« Reply #8 on: April 21, 2007, 12:32:05 PM »

I too am a fan of the G5RV as well, but also have a Butternut HF 6 in my back yard. (Like you, I have a Delta II Model 536, with matching Ten Tec Tuner, too)  Good starting out rig, Once you get hooked, you will want to graduate, or expand your horizons.  

Happy hunting!!!

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N6AJR
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« Reply #9 on: May 13, 2007, 10:35:42 PM »

first and cheapest would be the hustler 5BTV at about $159 and works so so better with radials.

next up is a steppir 6-40 or 6-80 vert much more expoensive but always perfect, or do a search here on elmers or google for Fan Dipole, you can make your self for 10 or 20 bucks..
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