6 Meter Questions - OT

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6 Meter Questions - OT

Don Rasmussen
Are there more sporadic E openings on 6 meters closer
to the sunspot cycle maximum?

How bad is a "poor" Summer for 6m CW & SSB, and on
average how often does that happen as compared to a
decent Summer of stateside DX on 6 meters?

[Elecraft] K3 on 6 Meters
Bill W5WVO w5wvo at cybermesa.net
Tue Apr 1 16:42:37 EST 2008

Previous message: [Elecraft] K3 on 6 Meters


Yes, Dave, you can rest assured that there are many
present and near-future K3
owners waiting with bated breatrh for this year's
sporadic-E season to start.
Where you are in AZ, monitor 50125 kHz for occasional
"early bird" openings
starting around mid-April; the "main event" gets going
around May 15 and lasts
through August 15, typically. If you have never
experienced a 6-meter
sporadic-E season, you're in for a real fun (and
probably addictive)
experience!

And get that 1.8 kHz roofing filter ready for the ARRL
and CQ VHF contests in
June/July. If the band is open, you'll need it!

Bill W5WVO
DM65
K3 late April / early May


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Re: 6 Meter Questions - OT

Ed Gray W0SD
Mentioned is a sixth reason to my recent post of additional reasons
besides contesting for a 1.8 filter for SSB.  Six Meter sporadic E
signals can be very, very loud and band conditions often change rapidly
so two stations very close to each can appear very suddenly through no
fault of their own.  This is even more true during the VHF Contests if
the band opens.

The questions I will answer direct.

73,  Ed W0SD

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Re: 6 Meter Questions - OT

Bill VanAlstyne W5WVO
In reply to this post by Don Rasmussen
Don Rasmussen wrote:
> Are there more sporadic E openings on 6 meters closer
> to the sunspot cycle maximum?

No. There has never been any credible evidence that the solar cycle affects
sporadic-E one way or the other. You can't prove a negative, but there is
certainly no observable correlation that has been shown to be statistically
significant.

> How bad is a "poor" Summer for 6m CW & SSB, and on
> average how often does that happen as compared to a
> decent Summer of stateside DX on 6 meters?

Worst sporadic-E summer on 6m here in NM (recently) was probably the summer of
2004 -- only 658 Qs, though I did miss the last three weeks of the season due
to moving. Best was the summer of 2006, by far (2204 Qs). What an awesome
year! Last summer was good in some places (especially the east coast), so-so
in others, like here -- 1262 Qs in 2007.

Unlike F2, there's no proven way of predicting when it's going to be a great
year for sporadic-E. It's great about as often as it is crummy -- in other
words, a more or less normal distribution of badness/goodness. :-)

Bill W5WVO


>
> [Elecraft] K3 on 6 Meters
> Bill W5WVO w5wvo at cybermesa.net
> Tue Apr 1 16:42:37 EST 2008
>
> Previous message: [Elecraft] K3 on 6 Meters
>
>
> Yes, Dave, you can rest assured that there are many
> present and near-future K3
> owners waiting with bated breatrh for this year's
> sporadic-E season to start.
> Where you are in AZ, monitor 50125 kHz for occasional
> "early bird" openings
> starting around mid-April; the "main event" gets going
> around May 15 and lasts
> through August 15, typically. If you have never
> experienced a 6-meter
> sporadic-E season, you're in for a real fun (and
> probably addictive)
> experience!
>
> And get that 1.8 kHz roofing filter ready for the ARRL
> and CQ VHF contests in
> June/July. If the band is open, you'll need it!
>
> Bill W5WVO
> DM65
> K3 late April / early May
>
>
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Re: 6 Meter Questions - OT

Bill VanAlstyne W5WVO
In reply to this post by Ed Gray W0SD
Absolutely, Ed! This really should be understood clearly by 6m newbies with
only HF experience. Sporadic-E is different than F2 in two important ways:

1) Sporadic-E is localized and dynamic. The sporadic-E "clouds", as they are
called, are sometimes quite small and localized. And they move, sometimes very
quickly. Consequently, you can't hear most of the people who are operating on
the band at any one instant in time. Due to shifting sporadic-E conditions,
signals can pop in or out very fast -- within minutes or seconds from "not
there" to "S9+40" or vice-versa.

2) Sporadic-E is extremely efficient. Sporadic-E clouds are formed by
high-energy horizontal wind shear at the E-layer boundary, and for this reason
they are very planar and can be intensely ionized, not unlike a mirror. It is
not uncommon for stations 1200 miles away to be 60 dB over S9 during extremely
intense openings -- (and you may be surprised to learn that that guy is
running 100W to a 3-element yagi at 20 feet).

People tend to self-channelize on 5 kHz spacing most of the time, but when an
S9+60 signal pops up 5 kHz away, you had BETTER have a good tight roofing
filter in your 1st IF. During the two annual summer VHF contests (ARRL, June,
and CQ, July), extremely strong signals are literally choking a wide-open 6m
band from 50125 up through 50200 and above, and as for the usual 5 kHz
spacing... Fuhgeddaboudit!  :-)

Bill W5WVO


Ed Gray W0SD wrote:

> Mentioned is a sixth reason to my recent post of additional reasons
> besides contesting for a 1.8 filter for SSB.  Six Meter sporadic E
> signals can be very, very loud and band conditions often change
> rapidly so two stations very close to each can appear very suddenly
> through no fault of their own.  This is even more true during the VHF
> Contests if the band opens.
>
> The questions I will answer direct.
>
> 73,  Ed W0SD
>
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Re: 6 Meter Questions - OT

Richard Davis-5
In reply to this post by Bill VanAlstyne W5WVO
Bill,

What are the characteristics of signals on 6 meters that are propagated
by sporadic-E?  How would I recognize that s-E is in effect?

Richard
K5BWV

===============================================================

Bill W5WVO wrote:

> Don Rasmussen wrote:
>> Are there more sporadic E openings on 6 meters closer
>> to the sunspot cycle maximum?
>
> No. There has never been any credible evidence that the solar cycle
> affects sporadic-E one way or the other. You can't prove a negative, but
> there is certainly no observable correlation that has been shown to be
> statistically significant.
>
>> How bad is a "poor" Summer for 6m CW & SSB, and on
>> average how often does that happen as compared to a
>> decent Summer of stateside DX on 6 meters?
>
> Worst sporadic-E summer on 6m here in NM (recently) was probably the
> summer of 2004 -- only 658 Qs, though I did miss the last three weeks of
> the season due to moving. Best was the summer of 2006, by far (2204 Qs).
> What an awesome year! Last summer was good in some places (especially
> the east coast), so-so in others, like here -- 1262 Qs in 2007.
>
> Unlike F2, there's no proven way of predicting when it's going to be a
> great year for sporadic-E. It's great about as often as it is crummy --
> in other words, a more or less normal distribution of badness/goodness. :-)
>
> Bill W5WVO

..
...
....
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Re: 6 Meter Questions - OT

Simon (HB9DRV)
Volatile signal levels - can be there for a few seconds to a few minutes or
even an hour. Signals you receive come more-or-less from roughly a single
direction (N, S, E, W).

A big advantage of the bandscope on the IC-7800 / IC-7700 - you suddenly see
the band coming to life.

Simon Brown, HB9DRV

--------------------------------------------------
From: "Richard Davis" <[hidden email]>
>
> What are the characteristics of signals on 6 meters that are propagated by
> sporadic-E?  How would I recognize that s-E is in effect?
>
 

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Re: 6 Meter Questions - OT

Bill VanAlstyne W5WVO
Generally all very true! Except for when it isn't. :-) One of the things you
can depend on about 6m -- probably the only thing, actually -- is that it will
fool you. I've experienced 6m sporadic-E openings when signals were very
strong and rock-solid for hours on end, and coming in from multiple azimuths.
All this means is that there are many sporadic-E clouds, they are very hot,
they are very large, and they aren't moving very fast. :-) All "unusual"
characteristics for sporadic-E, by the book, yet there are many such openings
every summer across North America and Europe.

In the doctor business, it's called differential diagnosis. It's basically a
process of elimination, and it's never 100% certain. Basically, though, if
you're hearing signals from well beyond ground wave distance, and you KNOW it
isn't F2 because the F2 MUF is way below 50 MHz (as it is now), and it's not
aurora (no flutter/distortion, and/or you live too far south to EVER hear
aurora), and it's not meteor scatter (signals are stable for more than a
second or two), and it's not troposcatter (signal is originating from more
than 350 or so miles away and are strong) or tropoducting (unusual on 6m, but
happens) or D-layer ionoscatter (don't even ask), and it's during a period of
the year where you would expect sporadic-E (May-August, November-January) --  
then it's probably some flavor of sporadic-E: single-hop,
multi-hop/earthbounce, multi-hop/extended-path, or some combination.
Sporadic-E propagation even combines with other modes: sporadic-E plus
meteor-scatter, sporadic-E plus tropoducting, and sporadic-E plus F2 have all
been observed on multiple occasions. During solar maxima (wait three or four
years from now), it is not uncommon to have F2 and sporadic-E propagation
happening at the same time -- sometimes combining on a path, sometimes acting
separately.

And sometimes, you are just very hard-pressed to come up with ANY plausible
propagation model to explain what you just heard/worked. Yet, there it is.

You gotta love this band. :-)

Bill W5WVO


Simon Brown (HB9DRV) wrote:

> Volatile signal levels - can be there for a few seconds to a few
> minutes or even an hour. Signals you receive come more-or-less from
> roughly a single direction (N, S, E, W).
>
> A big advantage of the bandscope on the IC-7800 / IC-7700 - you
> suddenly see the band coming to life.
>
> Simon Brown, HB9DRV
>
> --------------------------------------------------
> From: "Richard Davis" <[hidden email]>
>>
>> What are the characteristics of signals on 6 meters that are
>> propagated by sporadic-E?  How would I recognize that s-E is in
>> effect?
>
>
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RE: 6 Meter Questions - OT

Darwin, Keith
I've never been on 6.  Never.  My K3 will cover it so I'm gonna give it
a try.

What do I need for an antenna?  Will a multi-band vertical like the
Hy-Gain AV-620 give good performance on 6 meters?  Should I put up a 2
or 3 element yagi?  I'm lazy and very busy so building something just
isn't really in the cards right now.  If I do the yagi thing, I'll have
no rotor so I'll just point the antenna one direction and leave it.
Living in VT, I can point it a bit south of west and cover a big chunk
of the US.  A 2 element yagi would give a wider pattern and might be
workable.

What modes?  I assume CW is just fine on that band or does everyone run
SSB or FM?

- Keith N1AS -
- K2 5411.ssb.100 -
- K3 maybe next week? -
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Re: 6 Meter Questions - OT

Simon (HB9DRV)
Start with a 5/8 vertical or a 2 or 3 ele yagi as you suggest, polarisation
can be all over the place.

Lots of SSB 50.1 - 50.2 and CW 50.08 - 50.1 (-ish).

Simon Brown, HB9DRV

--------------------------------------------------
From: "Darwin, Keith" <[hidden email]>

> I've never been on 6.  Never.  My K3 will cover it so I'm gonna give it
> a try.
 

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Re: 6 Meter Questions - OT

Tom-5
In reply to this post by Darwin, Keith
Darwin, Keith wrote:
 >I've never been on 6. Never. My K3 will cover it so I'm gonna give it
 >a try.
 >What do I need for an antenna?

    A 3 element beam would be nice, but to start, a Squalo type antenna
(horizontal) will work just fine for Es openings.

Look at the KU4AB: http://ku4ab.com/6m-horiz.html

M2 antennas: http://www.m2inc.com/products/6m/6mloop.html

And look at Ehams reviews for other equivalents:

http://www.eham.net/reviews/products/37

    Once you go through a great Es summer, you might want to look at
more of an antenna.

Since 6 meters in built into the K3, I do encourage any K3 owners who
have never tried six to just simply try it this summer.

    tom k8tb



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Re: 6 Meter Questions - OT

Tom-5
In reply to this post by Darwin, Keith
Also,

    Keep an ear on 50.060 to 50.080 for the CW beacons. Last summer I
would park my radio on 50.062 to hear the W9DR beacon from Florida. If I
hear that, I can work anyone in Florida from Michigan.

     k8tb


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Re: 6 Meter Questions - OT

alsopb
For another view on 6 meters see:

http://www.kh2d.net/opinions/article.cfm?id=14

While somewhat tongue in cheek, there is a lot of truth to it.

You have to look at the joint probability of the band being open and you being at your rig.  For some, this joint probability approaches zero.

Contesters who are used to working DXCC on several bands during a weekend, find 6M pretty boring.

Perhaps this entire thread ought to be moved off this reflector.

73 de Brian/K3KO



K8TB wrote:

> Also,
>
>    Keep an ear on 50.060 to 50.080 for the CW beacons. Last summer I
> would park my radio on 50.062 to hear the W9DR beacon from Florida. If
> I hear that, I can work anyone in Florida from Michigan.
>
>     k8tb
>
>
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Re: 6 Meter Questions - OT

Bill VanAlstyne W5WVO
In reply to this post by Darwin, Keith
Keith,

You'll have much better success with a small yagi than with a vertical. A
three-element yagi (Cushcraft 3-element is cheap) will have wide enough a
beamwidth so you can get away (most of the time) without rotating it. At least
this will give you a taste of what it's like. :-)

90% of the 6m activity in the US is USB. When the band is strongly open, there
is also some CW activity. AM and FM are also used by some, but up the band
above 50400 kHz. Some urban areas support one or more 6m FM repeaters. But for
basic weak-signal work, it's 90% upper-sideband phone. This may be different
in EU -- I've heard there is more CW activity there -- but that's how it is
here.

Know the USA/Canada band plan. The national calling frequency is 50125. You
can monitor this frequency and get a good idea most of the time when the band
opens. You can also look for CW beacons 50060 to 50080 in the US, sometimes
below 50060 in Mexico and elsewhere. When the band is open, do not hold QSOs
on 50125, even though you may hear others doing so. QSOs within the USA/Canada
should be held above 50125. Stay below 50240, as then you're getting into the
WSJT digital meteor-scatter area, which is centered on 50260. Below 50125 is
considered the "DX window". It is (mostly) agreed that USA/Canada stations
will NOT call CQ DX n this window, but can call or answer CQs from DX
stations. CW activity is of course legal anywhere, but tends to happen from
the top of the beacon band (50080) to about 50100. Stations running SSB above
50125 will oftentimes switch to CW on the fly if weak-signal conditions
require it.

Know your maidenhead grid square. A basic QSO on 6m consists of report, grid
square, name.

Useful URLs:
http://www.vhfdx.net/spots/map.php?Lan=E&Frec=50&Map=NA
http://dxworld.com/50prop.html
http://www.keele.ac.uk/depts/por/50.htm
http://www.6mt.com/
http://www.smirk.org/

That's it on a thumbnail. Have fun!

Bill W5WVO


Darwin, Keith wrote:

> I've never been on 6.  Never.  My K3 will cover it so I'm gonna give
> it a try.
>
> What do I need for an antenna?  Will a multi-band vertical like the
> Hy-Gain AV-620 give good performance on 6 meters?  Should I put up a 2
> or 3 element yagi?  I'm lazy and very busy so building something just
> isn't really in the cards right now.  If I do the yagi thing, I'll
> have no rotor so I'll just point the antenna one direction and leave
> it. Living in VT, I can point it a bit south of west and cover a big
> chunk of the US.  A 2 element yagi would give a wider pattern and
> might be workable.
>
> What modes?  I assume CW is just fine on that band or does everyone
> run SSB or FM?
>
> - Keith N1AS -
> - K2 5411.ssb.100 -
> - K3 maybe next week? -
> _______________________________________________
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Re: 6 Meter Questions - OT

DW Holtman
In reply to this post by Simon (HB9DRV)
Hello,

Another inexpensive simple to install 6 meter ground plane is located here.

http://arrowantennas.com/?merchant_return_link=Return+to+Arrow+Antenna

EHam reviews of this antenna are here

http://www.eham.net/reviews/detail/2043

I have no connection with this antenna company.

Best,
DW Holtman
WB7SSN
----- Original Message -----
From: "Simon Brown (HB9DRV)" <[hidden email]>
To: <[hidden email]>
Sent: Wednesday, April 02, 2008 6:56 AM
Subject: Re: [Elecraft] 6 Meter Questions - OT


> Start with a 5/8 vertical or a 2 or 3 ele yagi as you suggest,
> polarisation can be all over the place.
>
> Lots of SSB 50.1 - 50.2 and CW 50.08 - 50.1 (-ish).
>
> Simon Brown, HB9DRV
>
> --------------------------------------------------
> From: "Darwin, Keith" <[hidden email]>
>
>> I've never been on 6.  Never.  My K3 will cover it so I'm gonna give it
>> a try.
>
>
> _______________________________________________
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Re: 6 Meter Questions - OT

w7aqk
In reply to this post by Darwin, Keith
Keith,

I'm probably not the one to answer this, but I will tell you
of my limited experience on 6.  Last year was my first real
venture on 6 meters.  I was tinkering with my FT-897D last
spring, and ran across several locals.  I was actually using
my R7 vertical, which supposedly doesn't do 6 meters.  But
it would load using the antenna tuner.  Anyway, talking to
the locals was o.k., but since I was vertically polarized
they couldn't hear me as well as I could hear them.  I was
Q5, but not loud.  Subsequently, I did make several longer
distance contacts using the R7, so once you get a bounce or
two the polarization problem doesn't seem as bad.  But the
antenna itself was pretty poor.  I did work into the
midwest, southeast, and northwest.  All of these were
presumably sporadic E contacts.  It was fun.

Now I have an R8 up, which does supposedly do 6 meters, but
I haven't made any contacts with it.  So far I haven't heard
much on 6, but my monitoring is intermittent.  But I am
anxious to see if at least the locals hear me any better on
an antenna that presumably does do 6 meters--they probably
won't because of polarization, but I still want to see how
it goes.

Now I have built the 6 meter Moxon I posted about earlier.
That will be the antenna I use (hopefully) when things start
to perk up.  It's basically a 2 element antenna--driven
element and reflector.  Pretty easy to build.  I put it up
on a pole yesterday, and I was pleased with the readings I
got on my antenna analyzer.  The antenna seems resonant a
bit high--around 50.6 mhz, but at 50.1 it's about 1:3 to 1,
which should be just fine.  What I need now are some signals
so I can check it for front to back, etc.  Unfortunately, in
my neighborhood I can't just put it up and leave it up.  I'm
skating on thin ice with the R8 already!  So I just attach
it to a telescoping pole, and run it up 20 or 25 feet, which
isn't too hard because the antenna is pretty lightweight.

There are probably lots of 6 meter antennas around that you
could try.  Some folks say you can throw up most anything
during sporadic E and get results.  Obviously though,
something with real gain is preferable.

If anyone is interested in a 2 element beam capable of being
set up for any band from 20 through 6 meters, you might
check out Vern Wright's portable beam
(www.superantennas.com).   I have one of those also, but
right now it is at another location, and I can't use it for
the time being.  But it is a heck of an antenna for portable
and field use.  Vern is in the process of putting out a 3
element version.  The 2 element version will probably get
you 4 db or so of gain.  On 6 meters you don't have to go up
all that high to get a nice low take-off angle.  If my math
is right, a half-wave on 6 is only about 9 feet, so anything
above that should show some nice results.  The 6 meter Moxon
I built should give me maybe 3 db (I said maybe!), and that
is even easier to put up on a pole since it is smaller.

As for frequency, I think the standard calling frequency for
SSB is 50.125 mhz.  CW is 50.095 I think.  But when things
are cooking, you can probably find stuff all around those
frequencies.

So, use what you have, but some upgrading in the antenna
would probably help a lot.  I'm sure others have some good
suggestions for you.

Dave W7AQK


----- Original Message -----
From: "Darwin, Keith" <[hidden email]>
To: <[hidden email]>
Sent: Wednesday, April 02, 2008 5:45 AM
Subject: RE: [Elecraft] 6 Meter Questions - OT


I've never been on 6.  Never.  My K3 will cover it so I'm
gonna give it
a try.

What do I need for an antenna?  Will a multi-band vertical
like the
Hy-Gain AV-620 give good performance on 6 meters?  Should I
put up a 2
or 3 element yagi?  I'm lazy and very busy so building
something just
isn't really in the cards right now.  If I do the yagi
thing, I'll have
no rotor so I'll just point the antenna one direction and
leave it.
Living in VT, I can point it a bit south of west and cover a
big chunk
of the US.  A 2 element yagi would give a wider pattern and
might be
workable.

What modes?  I assume CW is just fine on that band or does
everyone run
SSB or FM?

- Keith N1AS -
- K2 5411.ssb.100 -
- K3 maybe next week? -
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Re: 6 Meter Questions - OT

Bill VanAlstyne W5WVO
In reply to this post by alsopb
Brian Alsop wrote:

> You have to look at the joint probability of the band being open and
> you being at your rig.  For some, this joint probability approaches
> zero.

During the Es season, you will get plenty of openings if you're available
weekday evenings and/or weekends. Just leave the radio monitoring 50125
whenever you're around and you'll catch a lot of them. Unless you are
restricted to operating on alternating Tuesday evenings from 9:30 to 11:00 PM
(fort example), I think Brian's assessment is a little pessimistic. :-) That
said, it IS different than HF. You can't just turn on the radio at any random
hour and expect propagation to somewhere. It's true that 6m isn't for
everyone. But everyone should have the chance to try it!

> Perhaps this entire thread ought to be moved off this reflector.

I'm sure if Eric feels it should be curtailed, he will say so. However, 6m was
deliberately incorporated into the K3 by the design team, and there is
obviously a lot of interest in this feature. Since many Elecraft people have
never worked 6m, this seems a good place to disemminate a little basic
information about it. After all,

"The Elecraft list is a forum for the discussion of topics related to Elecraft
products and more general topics related ham radio."

73,
Bill W5WVO


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Re: 6 Meter Questions - OT

Geoffrey Mackenzie-Kennedy
In reply to this post by Don Rasmussen
As has already been said there does not seem to be any correlation between a
sloar cycle and the occurrence of sporadic E (Es) openings on 6m, certainly
at temperate latitudes. But something worth watching for during years of
high solar activity, especially around the time of an equinox, are those
very interesting but quite rare (perhaps) long haul openings over paths
which cross the geomagnetic equator. The propagation involved, putting aside
any multihop Es, appears to be regular F layer, sometimes Transequatorial
Propagation (TEP), between the southern and northern hemispheres and then Es
for the remainder of the northern path. An example of this was the reception
of the Cook Island 6m beacon ZK1AA during a double hop Es opening to
California in October 1969 when I was living near Montreal P.Q. (VE2AIO).

Since 1956 I have found that Es openings on 6m do occur during any month of
the year, but are certainly much more frequent during the 'summer and winter
seasons'.

73,
Geoff
GM4ESD

Don Rasmussen wrote on Wednesday, April 02, 2008 12:21 AM

> Are there more sporadic E openings on 6 meters closer
> to the sunspot cycle maximum?
>
> How bad is a "poor" Summer for 6m CW & SSB, and on
> average how often does that happen as compared to a
> decent Summer of stateside DX on 6 meters?

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Re: 6 Meter Questions - OT

Joseph Trombino, Jr
In reply to this post by Don Rasmussen
You don't need a whole lot antenna-wise to be able to work 6 meters when
sporadic E appears or even when we get F2 at a sunspot peak.

If you have an antenna tuner that covers 6 meters or can build a simple
tuner for 6 meters, just try out your HF antenna and see if it will load.

I have used my 170ft CF Extended Double Zepp for 40m on 6 meters for several
years and easily orked Europe during our last F2 cycle.

I've also worked across the U.S. with the above antenna during sporadic E
events so just try out your current HF antenna with a tuner and give it a
go.

Hope to see y'all on 6 meters this spring.

                                73, Joe W2KJ
                                I QRP, therefore I am


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RE: 6 Meter Questions - OT

Brendan Minish
In reply to this post by Darwin, Keith

On Wed, 2008-04-02 at 05:45 -0700, Darwin, Keith wrote:
> I've never been on 6.  Never.  My K3 will cover it so I'm gonna give it
> a try.

I have 42 US states worked on 6m, including most of the west coast ones,
thing is that I am located in Ireland!

6m is a fun band

this is a good place to start finding out some more about 6

http://www.uksmg.org/index_cs.php

The K3 is a fine 6m radio

73's Brendan
EI6IZ

--
Don‘t complain. Nobody will understand. Or care. And certainly don‘t try
to fix the situation yourself. It‘s dangerous. Leave it to a highly
untrained, unqualified, expendable professional.

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