[SixClub] vertical antenna(directanswer)

[Steve Katz]

You'll never achieve 30 dB gain with a six meter rhombic, no matter how
large you make it.  It might be possible to achieve such high gain with a
large array of stacked rhombics fed in phase, assuming the divider losses
are very small.  The problem with a "30 dB gain" rhombic is that it needs to
be 560 feet long (at 50.125 MHz) and the loss in wire that long counters the
effect of any potential gain.  Without being able to rotate the system, it
would be almost entirely useless because the front lobe, to achieve such
high gain, will only be three degrees wide.   If you're not aimed precisely
at the target, you'll miss it. -WB2WIK/6

-----Original Message-----
From: Ben Ramler [mailto:ben_ramler2002 at yahoo.com]
Sent: Tuesday, June 20, 2006 12:57 PM
To: World Wide Six Meter Club
Subject: Re: [SixClub] vertical antenna(directanswer)


How would I do a Rhomic? any details on how to make
it?

--- six_club at comcast.net wrote:

> I believe they were talking about an end feed
> longwire. If you want a wire antenna you might try a
> rombic, if done right you can see a 30DB gain. And
> if you put this in the path of the moon you can work
> EME but not all the time, just a short window.
> 
> To answer your question "as long as they are matched
> and tuned to six" they will work, but a beam is
> better
> 
> Jerry W9FS
>  -------------- Original message
> ----------------------
> From: Ben Ramler <ben_ramler2002 at yahoo.com>
> > So according to this email then, Longwire dipoles
> can
> > work on 6 meters yes or no. someone answer this
> for me
> > please?
> > 
> > --- K2UBG at att.net wrote:
> > 
> > > Mike,
> > > 
> > >     The wire length for his 5 wavelength
> longwire
> > > computes to 98.425 feet. The Google calculator
> shows
> > > 6 meters equals 19.685 feet. Not sure why it was
> so
> > > hard to get an answer to your question on a list
> > > that is supposed to be devoted to helping
> > > others...give a man a fish/give me a break.
> > > --
> > > 73, 
> > > John/K2UBG
> > > 
> > > 
> > > -------------- Original message from
> KG4ROF at aol.com:
> > > -------------- 
> > > 
> > > 
> > > > 
> > > > 
> > > > WHAT LONG WIRE DID YOU USE? 
> > > > KG4ROF EM90 
> > > > 
> > > > 
> > > >
> > >
> >
>
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