ZS7ANF

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(nothing to do with SOTA)

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Worked this station yesterday evening on 17M.? It is now QRT.? Sigs were S-7, and was able to make contact QRP when no others calling.

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This is an ice runway used by commercial tourist jets operated by a British tour company.? Have no idea what tourists do there after landing.? Doesn’t seem to even be a smoking lounge ?

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Vy cool website:

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fred kt5x

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Re: EFHW tuner

#4077

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Chris, do you mean the broadband matching units? ?Those are copies of what Parfits was selling since the 1980’s.? I built one into a zip case with a short piece of coax attached.? They work, and his design is COOL.? I prefer the tunable design originated by AA5TB as I have found variation in the peaks impact the actual resonance enough that being able to adjust helps.

?

Attached is a photo of the AA5TB tunable matching device for EFHW with a tinySWR indicator and plugged directly into an MTR3

?

Fred

?

I really like the end-fed design found at .? He put together a really cool kit that will build various end-fed antennas but also a random wire.? The best part is the focus on compact effecient design.? I've been using these for years and love them.

IMG_0864.JPG

Re: EFHW tuner

#4076

I really like the end-fed design found at .? He put together a really cool kit that will build various end-fed antennas but also a random wire.? The best part is the focus on compact effecient design.? I've been using these for years and love them.

- - - - - -?

. . .2
-- C? --
Chris Claborne

N1CLC
Dreams are just screensavers for the mind.

Show quoted text

On Fri, Feb 7, 2025 at 1:59?PM Fred Maas via <just.one.hill=[email protected]> wrote:

Fred, what freq(s) will your endfed half wave cover? - ?George
?
Depends upon what radio it is used with.?
With the MTR3, 20/30/40 (all the bands covered by the radio)
With the MTR5, 17, 20, 30, 40 (not 15, otherwise all the bands covered by the radio)
With the KH1 w/ATU, 15, 17, 20, 30, 40
With KX2 which adds band capability and ATU, 10, 12, 15, 17, 20, 30, 40, 60.? On 60 antenna acts as a random wire and wants a radial.
fd

Re: Cerro Rendija

#4075

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Great photos Dale!? TNX chase today.

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In May of ’22 my wife and I went there, did that one, also Brilliante, and Lobo.? Approached Lobo from due west where we camped.? Rough on shoes, them craters are ?

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fd

Re: Cerro Rendija

#4074

Hi Dale,

Thanks for the nice summit report.? I'm glad to be in your log on this one ... every one.? Same for the rest of all y'all W5N folks.

73,

Andy, N4LAG

Show quoted text

On Fri, Feb 7, 2025 at 5:51?PM Dale AA7OY via <120dale=[email protected]> wrote:

Cerro Rendija W5N/CO-013 was a real joy of an activation, easy hike with great views just bring?

something to sit on as there are no comfortable rocks on this one!

?

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If you are up to a bit more hiking this is an impressive side trip just a mile or so further down the road.

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“Caterpillar Collapse” a giant collapsed lava tube.

Beautiful winter hiking, hope you can get out on a hill soon.

Dale, AA7OY

Cerro Rendija

#4073

Cerro Rendija W5N/CO-013 was a real joy of an activation, easy hike with great views just bring?

something to sit on as there are no comfortable rocks on this one!

?

If you are up to a bit more hiking this is an impressive side trip just a mile or so further down the road.

?

“Caterpillar Collapse” a giant collapsed lava tube.

Beautiful winter hiking, hope you can get out on a hill soon.

Dale, AA7OY

Re: EFHW tuner

#4072

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Fred, what freq(s) will your endfed half wave cover? - ?George

?

Depends upon what radio it is used with.?

With the MTR3, 20/30/40 (all the bands covered by the radio)

With the MTR5, 17, 20, 30, 40 (not 15, otherwise all the bands covered by the radio)

With the KH1 w/ATU, 15, 17, 20, 30, 40

With KX2 which adds band capability and ATU, 10, 12, 15, 17, 20, 30, 40, 60.? On 60 antenna acts as a random wire and wants a radial.

fd

Re: EFHW tuner

#4071

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Fred, what freq(s) will your endfed half wave cover? George

On 2/7/2025 13:42, Fred Maas via groups.io wrote:

Show quoted text

Today John and I ascended Glorieta Mesa.? Of interest to others, at this time there is essentially no snow there at 8,000 ft elev.? Condx were fine, EU was worked by one of us on each of the higher bands.

?

I have been using an endfed HALFwave wire since 2012.? My reasons include that it does not require a radial on the ground as does a random wire which is lossy, and that I can use the last several feet of the wire as a feedline, no coax.? Coax adds weight, loss, and several connectors which in frequent use can fail.

?

Matching a halfwave at the end is challenging.? There must be a very high transformation.? In 2012 I found the web pages of AA5TB where he explained how he was dealing with an endfed halfwave.? I copied his circuit exactly, but used smaller components since I am running QRP.? After a few tries, I was able to make this so small that it fits in a dental floss case.? I even made one with a built-in SWR indicator, the “tinySWR” by Martin Hepp, DK3IT.

?

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Today, I believe, for the first time, … AA5TB chased me on a SOTA peak !!!? ??I emailed him to thank him for both the posting of his EFHW tuning experiments 20 years ago which inspired my miniaturized version of his conclusions, and the chase.

?

73,? fred kt5x

EFHW tuner

#4070

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Today John and I ascended Glorieta Mesa.? Of interest to others, at this time there is essentially no snow there at 8,000 ft elev.? Condx were fine, EU was worked by one of us on each of the higher bands.

?

I have been using an endfed HALFwave wire since 2012.? My reasons include that it does not require a radial on the ground as does a random wire which is lossy, and that I can use the last several feet of the wire as a feedline, no coax.? Coax adds weight, loss, and several connectors which in frequent use can fail.

?

Matching a halfwave at the end is challenging.? There must be a very high transformation.? In 2012 I found the web pages of AA5TB where he explained how he was dealing with an endfed halfwave.? I copied his circuit exactly, but used smaller components since I am running QRP.? After a few tries, I was able to make this so small that it fits in a dental floss case.? I even made one with a built-in SWR indicator, the “tinySWR” by Martin Hepp, DK3IT.

?

Today, I believe, for the first time, … AA5TB chased me on a SOTA peak !!!? ??I emailed him to thank him for both the posting of his EFHW tuning experiments 20 years ago which inspired my miniaturized version of his conclusions, and the chase.

?

73,? fred kt5x

SOTA Activation

#4069

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Action Plan: Saturday February 8, 2025? W5N/GW-008 Corner Peak
This a new summit for us so no tracks or pictures. Dale, AA7OY, will be meeting us. We will depart my QTH by 0700, with luck, and arrive at Michellels Store around 1030 to 1100. From Reserve we will proceed south and east to the summit.? QRV by 2000 UTC. Com will be 146.58 or 146.52
Here is a list of some coordinates on our route.
Left? 33.561930, -108.711847
Straight? 33.544446, -108.685107
Right? 33.538628, -108.662560
Left? 33.508849, -108.667170
Park some where around?? 33.483058, -108.642849
Packing extra water and food as it will be a long day but fun.? 73 all WB5USB Geo

SOTA Activation

#4068

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February 1, 2025? W5N/CO-004 Mount Powell
Depart my QTH by 0800 local.
I have been tracking the weather out by Thoreau and it looks good. Roads up to the summit should in excellent shape. SUBARU capable.
Temps in the high 40's under partly cloudy skies and winds in the 16 mph range. We will park at the com site and walk down the ridge to get away from any noise. Normally if you drive the speed limit it takes about 2hrs and 10 min to make the trip, but if Don takes Squirrel One then we may have to add a few min to the travel time. QRV around 1800 UTC.
73 all WB5USB Geo.. see previous pics for fun

W5N CO 004 Mount Powell 4.JPG

W5N CO 004 Mount Powell Don on top.JPG

W5N CO 004 Mount Powell Drive.gpx

W0M Association Anniversary this weekend

#4067

From KK0U via Reddit:

"This Saturday, February 1st, is the 12th anniversary of the W0M Association in the SOTA program. The last couple of years we have tried to activate as many peaks as weather would allow.

This year is no different, and it's on a Saturday!

Several local hams in the MO area are going to activate peaks. Most likely: Bell Moutain (W0M/SF-005) -- Yours truly Taum Sauk (W0M/SF-001) Buford (W0M/SF-002) Johnson (W0M/SF-006) Knob Lick (W0M/SF-030) among others. Note that the 6-pointers qualify for the 3-point winter bonus!

I know there's alot of activity on the bands this weekend (MNQP, VTQP, FYBO), but keep an ear out for us in W0M!

Most likely times will be 1600-2200Z

73, Jim KK0U"

DJ WW7D

#4066

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On a sota peak last week when he and Josh worked John and I on Tetilla… fd

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Here is DJ on the summit with Mt. Rainier in the background (spotting and awesome lenticular cloud)

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-Josh

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After Action Sandia Peak

#4065

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Don and I decided to try out Don's Land Rover so we went up to the Crest. W5N/SI-001.? Departing my QTH around 10 thirty we took the scenic drive up. Roads were in good shape, dry, no snow. Expecting it to be cold we over dressed. Turned out with sunshine and light winds we were quite toasty.
Set up ops just south of the summit along the ridge. Had trouble with cell service until I stared down La Luz trail to shield my cell phone from the towers. Spotted Don on 18 MHz and 20 min later Don had 16 contacts or so. One from France and one from Spain. We chose 18 megs due to its lower noise level and it really paid off. Land Rover seems to be working well.
73 all enjoy the pics? WB5USB Geo...

SOTA Activation

#4064

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Saturday, January 25,2025?? W5N/SE-039 Mesa Portales?? QRV 1800 UTC
While Fred (KT5X) and John (K1JD) will be on Caja del Rio our little group will be on Mesa Portales. With luck a S-2-S with those guys on 40 Meters might be possible. We will depart my QTH by 0800. Weather will be cloudy with temps in the high 40's to low 50's and light winds. see previous pics
73 WB5USB Geo?

W5N SE 039 Mesa Portales Drive 2.gpx

W5N SE 039 Mesa Portales Trail up 4 WB5USB.jpg

Re: RECCO

#4063

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Yeah – our heavy-duty E-Bike helmets have this built in.? Not very useful right now.? But like anything, there is a potential for either growth or obscurity.? But it only adds a very slight amount of weight to the helmets.

Vy73 - Mike - KD5KC.

El Paso, Texas - DM61rt.

SOTA W5T-Texas Association Manager.

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Show quoted text

From: [email protected] <[email protected]> On Behalf Of Christian N1CLC
Sent: Sunday, January 19, 2025 22:11 PM
To: [email protected]
Subject: Re: [W5N-SOTA] RECCO

?

Very interesting but the only place listed that it might be used in AZ is Flag, and an obscure place in New Mex.??

?

For California, it looks like it may be used in a few places I go.

- - - - - -?

. . .2
-- C? --
Chris Claborne

N1CLC
Dreams are just screensavers for the mind.

?

On Sun, Jan 19, 2025 at 7:00?AM Dale AA7OY via <120dale=[email protected]> wrote:

Interesting piece of lightweight gear that may be of use.
?
Dale AA7OY
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Re: RECCO

#4062

Very interesting but the only place listed that it might be used in AZ is Flag, and an obscure place in New Mex.??

For California, it looks like it may be used in a few places I go.

- - - - - -?

. . .2
-- C? --
Chris Claborne

N1CLC
Dreams are just screensavers for the mind.

Show quoted text

On Sun, Jan 19, 2025 at 7:00?AM Dale AA7OY via <120dale=[email protected]> wrote:

Interesting piece of lightweight gear that may be of use.

Dale AA7OY