Re: Topband: New user, some advice needed.

[Clive GM3POI]

Pat can I suggest an easier way, Given something close to quarter wave or
even much shorter but top loaded, the way to approach it, is as follows.
Construct the vertical to be somewhere close to resonance at 1.9mhz or
slightly below, then add a hairpin coil directly across the feed point to
bring the SWR at  1825 to 1:1. Much much easier than linear (low Q ) loading
and will match easily.
73 Clive GM3POI

-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Patrick
Armstrong
Sent: 21 December 2016 20:43
To: W0MU Mike Fatchett
Cc: topband@contesting.com; Petronel Postolache
Subject: Re: Topband: New user, some advice needed.

   I have noticed several times that people talk about being able to put up
a full .250 wavelength vertical and I have wondered why almost never do they
think about making it .270 wavelength instead of .250 wavelength. The little
extra length gives a feed point impedance of 52 ohms with some inductive
reactance which can be canceled with a series capactor. This gives a more
efficient feed than a .250 wavelength and using an inductor to get a match.
I designed my 75/80m vertical this way and with 65 radials ( odd number
'cause that's all the wire I had) it has allowed me to work 280 entities
with100 watts, all SSB. (Blasphemy I know, I have an ear condition which
made 13 wpm almost impossible for me).

   I also use this antenna on 160m by using linear loading and an inductor
for matching. Linear loading seems to be overlooked in a lot of discussions
of antennas on this list and I wonder why. Am I missing a downside to these
matching systems? If so I would like to hear about it.

   Pat Armstrong  KF5YZ  Heart of Texas

On Tue, Dec 20, 2016 at 12:00 PM, W0MU Mike Fatchett <w...@w0mu.com> wrote:

> https://www.dxengineering.com/search/product-line/dx-enginee
> ring-160-meter-thunderbolt-vertical-antennas?autoview=
> SKU=160%20vertical=BestKeywordMatch=Ascending
>
>
> On 12/20/2016 10:24 AM, Petronel Postolache wrote:
>
>> I can't find the Vertical from DX Engineering. If you can send me a 
>> link it will be great.
>> One solution might be top hat vertical, similar with 
>> http://dl2kq.de/ant/3-1.htm . Not sure how much power is lost in the 
>> matching unit L1, C1.
>>
>> I would love a Waller Flag too. Imposible to buy one from here (too
>> expensive) but I might wanna try build one. Preamp will be the 
>> biggest problem.
>>
>> Petronel
>> YO8SEP / YP8W
>>
>> On Mon, Dec 19, 2016 at 9:30 PM, W0MU Mike Fatchett <w...@w0mu.com 
>> <mailto:w...@w0mu.com>> wrote:
>>
>> Check out DX Engineering.  They sell a vertical that uses 3 top
>> hat wires.  Sloping back down is ok.  For 80/160 you need to stop
>> the 80m energy with a coil/trap My 80 uses a very fast taper and
>> the top is only 3/8 inch or less so It cannot support a coil or t
>> wires.  I probably should have planned that out better.  I was
>> also going to try to phase two 80 elements over time but that will
>> not happen any time soon.
>>
>> With all the metal in the yard the AY loop may not work very
>> well.  Waller Flag on the roof maybe.  I would love one.
>>
>> W0MU
>>
>>
>> On 12/19/2016 12:24 PM, Petronel Postolache wrote:
>>
>>> I can try to put a 21-22m (68-70 foot) telescopic aluminium pole,
>>> made from pipes 2" to 1" diameter.
>>> It will be a bit too long for 1/4 on 80m. I can put a T top hat
>>> or run an InvL, but probably need to slope it from 70 foot to
>>> about 40 foot. What will be better ? and will I be able to
>>> match/use the antenna on 80m also ?
>>>
>>> About K9AY, I understood that the loop is influenced by close
>>> metal objects, and the property is full of wire fences, vineyard
>>> rows and other "metal" structures. That's why i was thinking
>>> about using some flag/loop at 10 feet or more above ground.
>>>
>>> 73, Petronel
>>> YO8SEP
>>>
>>> 160 and 80 will be difficult. Can you get another vertical up
>>> about 60 feet? You can top load that with a trap for 80 and have
>>> "t" wires at the top that also act as guy wires. You can also
>>> bottom load for 160 and maybe that will be good enough for you.
>>> Radials whatever you can do will help.An Inverted L with about
>>> 50ft of vertical will work okIf you can keep the horizontal
>>> end up in the air around the same height or more. It doesn't
>>> sound like you have any tall trees to work with.For receiving I
>>

Re: Topband: New user, some advice needed.

[Clive GM3POI]

Pat can I suggest an easier way, Given something close to quarter wave or
even much shorter but top loaded, the way to approach it, is as follows.
Construct the vertical to be somewhere close to resonance at 1.9mhz or
slightly below, then add a hairpin coil directly across the feed point to
bring the SWR at  1825 to 1:1. Much much easier than linear (low Q ) loading
and will match easily.
73 Clive GM3POI

-Original Message-
From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Patrick
Armstrong
Sent: 21 December 2016 20:43
To: W0MU Mike Fatchett
Cc: topband@contesting.com; Petronel Postolache
Subject: Re: Topband: New user, some advice needed.

   I have noticed several times that people talk about being able to put up
a full .250 wavelength vertical and I have wondered why almost never do they
think about making it .270 wavelength instead of .250 wavelength. The little
extra length gives a feed point impedance of 52 ohms with some inductive
reactance which can be canceled with a series capactor. This gives a more
efficient feed than a .250 wavelength and using an inductor to get a match.
I designed my 75/80m vertical this way and with 65 radials ( odd number
'cause that's all the wire I had) it has allowed me to work 280 entities
with100 watts, all SSB. (Blasphemy I know, I have an ear condition which
made 13 wpm almost impossible for me).

   I also use this antenna on 160m by using linear loading and an inductor
for matching. Linear loading seems to be overlooked in a lot of discussions
of antennas on this list and I wonder why. Am I missing a downside to these
matching systems? If so I would like to hear about it.

   Pat Armstrong  KF5YZ  Heart of Texas

On Tue, Dec 20, 2016 at 12:00 PM, W0MU Mike Fatchett <w...@w0mu.com> wrote:

> https://www.dxengineering.com/search/product-line/dx-enginee
> ring-160-meter-thunderbolt-vertical-antennas?autoview=
> SKU=160%20vertical=BestKeywordMatch=Ascending
>
>
> On 12/20/2016 10:24 AM, Petronel Postolache wrote:
>
>> I can't find the Vertical from DX Engineering. If you can send me a 
>> link it will be great.
>> One solution might be top hat vertical, similar with 
>> http://dl2kq.de/ant/3-1.htm . Not sure how much power is lost in the 
>> matching unit L1, C1.
>>
>> I would love a Waller Flag too. Imposible to buy one from here (too
>> expensive) but I might wanna try build one. Preamp will be the 
>> biggest problem.
>>
>> Petronel
>> YO8SEP / YP8W
>>
>> On Mon, Dec 19, 2016 at 9:30 PM, W0MU Mike Fatchett <w...@w0mu.com 
>> <mailto:w...@w0mu.com>> wrote:
>>
>> Check out DX Engineering.  They sell a vertical that uses 3 top
>> hat wires.  Sloping back down is ok.  For 80/160 you need to stop
>> the 80m energy with a coil/trap My 80 uses a very fast taper and
>> the top is only 3/8 inch or less so It cannot support a coil or t
>> wires.  I probably should have planned that out better.  I was
>> also going to try to phase two 80 elements over time but that will
>> not happen any time soon.
>>
>> With all the metal in the yard the AY loop may not work very
>> well.  Waller Flag on the roof maybe.  I would love one.
>>
>> W0MU
>>
>>
>> On 12/19/2016 12:24 PM, Petronel Postolache wrote:
>>
>>> I can try to put a 21-22m (68-70 foot) telescopic aluminium pole,
>>> made from pipes 2" to 1" diameter.
>>> It will be a bit too long for 1/4 on 80m. I can put a T top hat
>>> or run an InvL, but probably need to slope it from 70 foot to
>>> about 40 foot. What will be better ? and will I be able to
>>> match/use the antenna on 80m also ?
>>>
>>> About K9AY, I understood that the loop is influenced by close
>>> metal objects, and the property is full of wire fences, vineyard
>>> rows and other "metal" structures. That's why i was thinking
>>> about using some flag/loop at 10 feet or more above ground.
>>>
>>> 73, Petronel
>>> YO8SEP
>>>
>>> 160 and 80 will be difficult. Can you get another vertical up
>>> about 60 feet? You can top load that with a trap for 80 and have
>>> "t" wires at the top that also act as guy wires. You can also
>>> bottom load for 160 and maybe that will be good enough for you.
>>> Radials whatever you can do will help.An Inverted L with about
>>> 50ft of vertical will work okIf you can keep the horizontal
>>> end up in the air around the same height or more. It doesn't
>>> sound like you have any tall trees to work with.For receiving I
>>

Re: Topband: New user, some advice needed.

[MICHAEL ST ANGELO]

Pat,

My Inverted L is longer than a quarter wavelength. I also use it on the HF 
bands 80-20 and it is easier to match since it is not a multiple of a half 
wavelength

Mike N2MS


> On December 21, 2016 at 3:43 PM Patrick Armstrong  wrote:
> 
> 
>I have noticed several times that people talk about being able to put up
> a full .250 wavelength vertical and I have wondered why almost never do
> they think about making it .270 wavelength instead of .250 wavelength. The
> little extra length gives a feed point impedance of 52 ohms with some
> inductive reactance which can be canceled with a series capactor. This
> gives a more efficient feed than a .250 wavelength and using an inductor to
> get a match. I designed my 75/80m vertical this way and with 65 radials (
> odd number 'cause that's all the wire I had) it has allowed me to work 280
> entities with100 watts, all SSB. (Blasphemy I know, I have an ear condition
> which made 13 wpm almost impossible for me).
> 
>I also use this antenna on 160m by using linear loading and an inductor
> for matching. Linear loading seems to be overlooked in a lot of discussions
> of antennas on this list and I wonder why. Am I missing a downside to these
> matching systems? If so I would like to hear about it.
> 
>Pat Armstrong  KF5YZ  Heart of Texas
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: New user, some advice needed.

[Petronel YO8SEP]

What do you mean by linear loading?
How long are your radials?

73, Petronel YO8SEP

On 21 Dec 2016 22:43, "Patrick Armstrong"  wrote:

>I have noticed several times that people talk about being able to put
> up a full .250 wavelength vertical and I have wondered why almost never do
> they think about making it .270 wavelength instead of .250 wavelength. The
> little extra length gives a feed point impedance of 52 ohms with some
> inductive reactance which can be canceled with a series capactor. This
> gives a more efficient feed than a .250 wavelength and using an inductor to
> get a match. I designed my 75/80m vertical this way and with 65 radials (
> odd number 'cause that's all the wire I had) it has allowed me to work 280
> entities with100 watts, all SSB. (Blasphemy I know, I have an ear
> condition which made 13 wpm almost impossible for me).
>
>I also use this antenna on 160m by using linear loading and an inductor
> for matching. Linear loading seems to be overlooked in a lot of discussions
> of antennas on this list and I wonder why. Am I missing a downside to these
> matching systems? If so I would like to hear about it.
>
>  Pat Armstrong  KF5YZ  Heart of Texas
>
> On Tue, Dec 20, 2016 at 12:00 PM, W0MU Mike Fatchett 
> wrote:
>
>> https://www.dxengineering.com/search/product-line/dx-enginee
>> ring-160-meter-thunderbolt-vertical-antennas?autoview=SKU&
>> keyword=160%20vertical=BestKeywordMatch=Ascending
>>
>>
>> On 12/20/2016 10:24 AM, Petronel Postolache wrote:
>>
>>> I can't find the Vertical from DX Engineering. If you can send me a link
>>> it will be great.
>>> One solution might be top hat vertical, similar with
>>> http://dl2kq.de/ant/3-1.htm . Not sure how much power is lost in the
>>> matching unit L1, C1.
>>>
>>> I would love a Waller Flag too. Imposible to buy one from here (too
>>> expensive) but I might wanna try build one. Preamp will be the biggest
>>> problem.
>>>
>>> Petronel
>>> YO8SEP / YP8W
>>>
>>> On Mon, Dec 19, 2016 at 9:30 PM, W0MU Mike Fatchett >> > wrote:
>>>
>>> Check out DX Engineering.  They sell a vertical that uses 3 top
>>> hat wires.  Sloping back down is ok.  For 80/160 you need to stop
>>> the 80m energy with a coil/trap My 80 uses a very fast taper and
>>> the top is only 3/8 inch or less so It cannot support a coil or t
>>> wires.  I probably should have planned that out better.  I was
>>> also going to try to phase two 80 elements over time but that will
>>> not happen any time soon.
>>>
>>> With all the metal in the yard the AY loop may not work very
>>> well.  Waller Flag on the roof maybe.  I would love one.
>>>
>>> W0MU
>>>
>>>
>>> On 12/19/2016 12:24 PM, Petronel Postolache wrote:
>>>
 I can try to put a 21-22m (68-70 foot) telescopic aluminium pole,
 made from pipes 2" to 1" diameter.
 It will be a bit too long for 1/4 on 80m. I can put a T top hat
 or run an InvL, but probably need to slope it from 70 foot to
 about 40 foot. What will be better ? and will I be able to
 match/use the antenna on 80m also ?

 About K9AY, I understood that the loop is influenced by close
 metal objects, and the property is full of wire fences, vineyard
 rows and other "metal" structures. That's why i was thinking
 about using some flag/loop at 10 feet or more above ground.

 73, Petronel
 YO8SEP

 160 and 80 will be difficult. Can you get another vertical up
 about 60 feet? You can top load that with a trap for 80 and have
 "t" wires at the top that also act as guy wires. You can also
 bottom load for 160 and maybe that will be good enough for you.
 Radials whatever you can do will help.An Inverted L with about
 50ft of vertical will work okIf you can keep the horizontal
 end up in the air around the same height or more. It doesn't
 sound like you have any tall trees to work with.For receiving I
 have been very impressed with a K9AP loop. 25 ft up and about 15
 feet out at the corners. It does not take up much space and you
 can reverse the direction easily with a relay. A flag or pennant
 will work too. You can never have enough rcv or xmit antenna! HI!
 Welcome to the club!

 W0MU


>>>
>>>
>> _
>> Topband Reflector Archives - http://www.contesting.com/_topband
>>
>
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: New user, some advice needed.

[Patrick Armstrong]

   I have noticed several times that people talk about being able to put up
a full .250 wavelength vertical and I have wondered why almost never do
they think about making it .270 wavelength instead of .250 wavelength. The
little extra length gives a feed point impedance of 52 ohms with some
inductive reactance which can be canceled with a series capactor. This
gives a more efficient feed than a .250 wavelength and using an inductor to
get a match. I designed my 75/80m vertical this way and with 65 radials (
odd number 'cause that's all the wire I had) it has allowed me to work 280
entities with100 watts, all SSB. (Blasphemy I know, I have an ear condition
which made 13 wpm almost impossible for me).

   I also use this antenna on 160m by using linear loading and an inductor
for matching. Linear loading seems to be overlooked in a lot of discussions
of antennas on this list and I wonder why. Am I missing a downside to these
matching systems? If so I would like to hear about it.

   Pat Armstrong  KF5YZ  Heart of Texas

On Tue, Dec 20, 2016 at 12:00 PM, W0MU Mike Fatchett  wrote:

> https://www.dxengineering.com/search/product-line/dx-enginee
> ring-160-meter-thunderbolt-vertical-antennas?autoview=
> SKU=160%20vertical=BestKeywordMatch=Ascending
>
>
> On 12/20/2016 10:24 AM, Petronel Postolache wrote:
>
>> I can't find the Vertical from DX Engineering. If you can send me a link
>> it will be great.
>> One solution might be top hat vertical, similar with
>> http://dl2kq.de/ant/3-1.htm . Not sure how much power is lost in the
>> matching unit L1, C1.
>>
>> I would love a Waller Flag too. Imposible to buy one from here (too
>> expensive) but I might wanna try build one. Preamp will be the biggest
>> problem.
>>
>> Petronel
>> YO8SEP / YP8W
>>
>> On Mon, Dec 19, 2016 at 9:30 PM, W0MU Mike Fatchett > > wrote:
>>
>> Check out DX Engineering.  They sell a vertical that uses 3 top
>> hat wires.  Sloping back down is ok.  For 80/160 you need to stop
>> the 80m energy with a coil/trap My 80 uses a very fast taper and
>> the top is only 3/8 inch or less so It cannot support a coil or t
>> wires.  I probably should have planned that out better.  I was
>> also going to try to phase two 80 elements over time but that will
>> not happen any time soon.
>>
>> With all the metal in the yard the AY loop may not work very
>> well.  Waller Flag on the roof maybe.  I would love one.
>>
>> W0MU
>>
>>
>> On 12/19/2016 12:24 PM, Petronel Postolache wrote:
>>
>>> I can try to put a 21-22m (68-70 foot) telescopic aluminium pole,
>>> made from pipes 2" to 1" diameter.
>>> It will be a bit too long for 1/4 on 80m. I can put a T top hat
>>> or run an InvL, but probably need to slope it from 70 foot to
>>> about 40 foot. What will be better ? and will I be able to
>>> match/use the antenna on 80m also ?
>>>
>>> About K9AY, I understood that the loop is influenced by close
>>> metal objects, and the property is full of wire fences, vineyard
>>> rows and other "metal" structures. That's why i was thinking
>>> about using some flag/loop at 10 feet or more above ground.
>>>
>>> 73, Petronel
>>> YO8SEP
>>>
>>> 160 and 80 will be difficult. Can you get another vertical up
>>> about 60 feet? You can top load that with a trap for 80 and have
>>> "t" wires at the top that also act as guy wires. You can also
>>> bottom load for 160 and maybe that will be good enough for you.
>>> Radials whatever you can do will help.An Inverted L with about
>>> 50ft of vertical will work okIf you can keep the horizontal
>>> end up in the air around the same height or more. It doesn't
>>> sound like you have any tall trees to work with.For receiving I
>>> have been very impressed with a K9AP loop. 25 ft up and about 15
>>> feet out at the corners. It does not take up much space and you
>>> can reverse the direction easily with a relay. A flag or pennant
>>> will work too. You can never have enough rcv or xmit antenna! HI!
>>> Welcome to the club!
>>>
>>> W0MU
>>>
>>>
>>
>>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: New user, some advice needed.

[W0MU Mike Fatchett]

https://www.dxengineering.com/search/product-line/dx-engineering-160-meter-thunderbolt-vertical-antennas?autoview=SKU=160%20vertical=BestKeywordMatch=Ascending


On 12/20/2016 10:24 AM, Petronel Postolache wrote:
I can't find the Vertical from DX Engineering. If you can send me a 
link it will be great.
One solution might be top hat vertical, similar with 
http://dl2kq.de/ant/3-1.htm . Not sure how much power is lost in the 
matching unit L1, C1.


I would love a Waller Flag too. Imposible to buy one from here (too 
expensive) but I might wanna try build one. Preamp will be the biggest 
problem.


Petronel
YO8SEP / YP8W

On Mon, Dec 19, 2016 at 9:30 PM, W0MU Mike Fatchett > wrote:


Check out DX Engineering.  They sell a vertical that uses 3 top
hat wires.  Sloping back down is ok.  For 80/160 you need to stop
the 80m energy with a coil/trap My 80 uses a very fast taper and
the top is only 3/8 inch or less so It cannot support a coil or t
wires.  I probably should have planned that out better.  I was
also going to try to phase two 80 elements over time but that will
not happen any time soon.

With all the metal in the yard the AY loop may not work very
well.  Waller Flag on the roof maybe.  I would love one.

W0MU


On 12/19/2016 12:24 PM, Petronel Postolache wrote:

I can try to put a 21-22m (68-70 foot) telescopic aluminium pole,
made from pipes 2" to 1" diameter.
It will be a bit too long for 1/4 on 80m. I can put a T top hat
or run an InvL, but probably need to slope it from 70 foot to
about 40 foot. What will be better ? and will I be able to
match/use the antenna on 80m also ?

About K9AY, I understood that the loop is influenced by close
metal objects, and the property is full of wire fences, vineyard
rows and other "metal" structures. That's why i was thinking
about using some flag/loop at 10 feet or more above ground.

73, Petronel
YO8SEP

160 and 80 will be difficult. Can you get another vertical up
about 60 feet? You can top load that with a trap for 80 and have
"t" wires at the top that also act as guy wires. You can also
bottom load for 160 and maybe that will be good enough for you.
Radials whatever you can do will help.An Inverted L with about
50ft of vertical will work okIf you can keep the horizontal
end up in the air around the same height or more. It doesn't
sound like you have any tall trees to work with.For receiving I
have been very impressed with a K9AP loop. 25 ft up and about 15
feet out at the corners. It does not take up much space and you
can reverse the direction easily with a relay. A flag or pennant
will work too. You can never have enough rcv or xmit antenna! HI!
Welcome to the club!

W0MU






_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: New user, some advice needed.

[Petronel Postolache]

I can't find the Vertical from DX Engineering. If you can send me a link it
will be great.
One solution might be top hat vertical, similar with
http://dl2kq.de/ant/3-1.htm . Not sure how much power is lost in the
matching unit L1, C1.

I would love a Waller Flag too. Imposible to buy one from here (too
expensive) but I might wanna try build one. Preamp will be the biggest
problem.

Petronel
YO8SEP / YP8W

On Mon, Dec 19, 2016 at 9:30 PM, W0MU Mike Fatchett  wrote:

> Check out DX Engineering.  They sell a vertical that uses 3 top hat
> wires.  Sloping back down is ok.  For 80/160 you need to stop the 80m
> energy with a coil/trap  My 80 uses a very fast taper and the top is only
> 3/8 inch or less so It cannot support a coil or t wires.  I probably should
> have planned that out better.  I was also going to try to phase two 80
> elements over time but that will not happen any time soon.
>
> With all the metal in the yard the AY loop may not work very well.  Waller
> Flag on the roof maybe.  I would love one.
>
> W0MU
>
> On 12/19/2016 12:24 PM, Petronel Postolache wrote:
>
> I can try to put a 21-22m (68-70 foot) telescopic aluminium pole, made
> from pipes 2" to 1" diameter.
> It will be a bit too long for 1/4 on 80m. I can put a T top hat or run an
> InvL, but probably need to slope it from 70 foot to about 40 foot. What
> will be better ? and will I be able to match/use the antenna on 80m also ?
>
> About K9AY, I understood that the loop is influenced by close metal
> objects, and the property is full of wire fences, vineyard rows and other
> "metal" structures. That's why i was thinking about using some flag/loop at
> 10 feet or more above ground.
>
> 73, Petronel
> YO8SEP
>
> 160 and 80 will be difficult. Can you get another vertical up about 60 feet?
> You can top load that with a trap for 80 and have "t" wires at the top
> that also act as guy wires. You can also bottom load for 160 and maybe
> that will be good enough for you. Radials whatever you can do will help.An
> Inverted L with about 50ft of vertical will work okIf you can keep
> the horizontal end up in the air around the same height or more. It
> doesn't sound like you have any tall trees to work with.For receiving I
> have been very impressed with a K9AP loop. 25 ft up and about 15 feet out
> at the corners. It does not take up much space and you can reverse the
> direction easily with a relay. A flag or pennant will work too. You can
> never have enough rcv or xmit antenna! HI!
>
> Welcome to the club!
>
> W0MU
>
>
>
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: New user, some advice needed.

[W0MU Mike Fatchett]

Check out DX Engineering.  They sell a vertical that uses 3 top hat 
wires.  Sloping back down is ok.  For 80/160 you need to stop the 80m 
energy with a coil/trap  My 80 uses a very fast taper and the top is 
only 3/8 inch or less so It cannot support a coil or t wires.  I 
probably should have planned that out better.  I was also going to try 
to phase two 80 elements over time but that will not happen any time soon.


With all the metal in the yard the AY loop may not work very well.  
Waller Flag on the roof maybe.  I would love one.


W0MU


On 12/19/2016 12:24 PM, Petronel Postolache wrote:
I can try to put a 21-22m (68-70 foot) telescopic aluminium pole, made 
from pipes 2" to 1" diameter.
It will be a bit too long for 1/4 on 80m. I can put a T top hat or run 
an InvL, but probably need to slope it from 70 foot to about 40 foot. 
What will be better ? and will I be able to match/use the antenna on 
80m also ?


About K9AY, I understood that the loop is influenced by close metal 
objects, and the property is full of wire fences, vineyard rows and 
other "metal" structures. That's why i was thinking about using some 
flag/loop at 10 feet or more above ground.


73, Petronel
YO8SEP

160 and 80 will be difficult. Can you get another vertical up about 60 
feet? You can top load that with a trap for 80 and have "t" wires at 
the top that also act as guy wires. You can also bottom load for 160 
and maybe that will be good enough for you. Radials whatever you can 
do will help.An Inverted L with about 50ft of vertical will work 
okIf you can keep the horizontal end up in the air around the same 
height or more. It doesn't sound like you have any tall trees to work 
with.For receiving I have been very impressed with a K9AP loop. 25 ft 
up and about 15 feet out at the corners. It does not take up much 
space and you can reverse the direction easily with a relay. A flag or 
pennant will work too. You can never have enough rcv or xmit antenna! HI!

Welcome to the club!

W0MU



_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: New user, some advice needed.

[Petronel Postolache]

I can try to put a 21-22m (68-70 foot) telescopic aluminium pole, made from
pipes 2" to 1" diameter.
It will be a bit too long for 1/4 on 80m. I can put a T top hat or run an
InvL, but probably need to slope it from 70 foot to about 40 foot. What
will be better ? and will I be able to match/use the antenna on 80m also ?

About K9AY, I understood that the loop is influenced by close metal
objects, and the property is full of wire fences, vineyard rows and other
"metal" structures. That's why i was thinking about using some flag/loop at
10 feet or more above ground.

73, Petronel
YO8SEP

160 and 80 will be difficult. Can you get another vertical up about 60 feet?
You can top load that with a trap for 80 and have "t" wires at the top that
also act as guy wires. You can also bottom load for 160 and maybe that will
be good enough for you. Radials whatever you can do will help.

An Inverted L with about 50ft of vertical will work okIf you can keep
the horizontal end up in the air around the same height or more. It doesn't
sound like you have any tall trees to work with.

For receiving I have been very impressed with a K9AP loop. 25 ft up and about
15 feet out at the corners. It does not take up much space and you can
reverse the direction easily with a relay. A flag or pennant will work too.
You can never have enough rcv or xmit antenna! HI!

Welcome to the club!

W0MU
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Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: New user, some advice needed.

[W0MU Mike Fatchett]

160 and 80 will be difficult.  Can you get another vertical up about 60 
feet?  You can top load that with a trap for 80 and have "t" wires at 
the top that also act as guy wires.You can also bottom load for 160 
and maybe that will be good enough for you. Radials whatever you can do 
will help.


An Inverted L with about 50ft of vertical will work okIf you can 
keep the horizontal end up in the air  around the same height or more.  
It doesn't sound like you have any tall trees to work with.


For receiving I have been very impressed with a K9AP loop.  25 ft up and 
about 15 feet out at the corners.  It does not take up much space and 
you can reverse the direction easily with a relay.  A flag or pennant 
will work too.  You can never have enough rcv or xmit antenna!  HI!


Welcome to the club!

W0MU


On 12/19/2016 6:49 AM, Petronel Postolache wrote:

Hi,

I got my first ham license 2 years ago, and because I couldn't install an
antenna at home, I've worked mostly portable (SOTA, WWFF activations).

In February 2016 participated on CQ 160 SSB from YR8E and got the
"contesting virus". So, I've started to built a QTH at my parents home,
about 1 hour drive from where I live.

The location is about 30x40m (100x130 feet) in a small town. The plans is
something like this : https://s30.postimg.org/qq94d2rpd/YP8_W.png

So far I've build a small tower 12m (40') with a triband yagi for 20/15/10m
bands
For 40m band I have a 1/4 vertical with 4 elevated radial.

With not so much space, not sure what I can build for 80m and especially
for 160m.
- Inverted L, 20m Al telescoing pipe + 20m slopping wire ?
- Vertical Al telescoping pipe 27m and some coil matching at the base ?
The problem is that a big part of the area is vineyard or other infield.
Can't install 30-60 radials, probably can install some elevated radials or
FCP. What other options I have?

For receiving I'm thinking for a vertical loop/flag, or even a vertical
Waller Flag.

Thank you in advance.

73,
Petronel
YO8SEP / YP8W
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Topband Reflector Archives - http://www.contesting.com/_topband


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Topband Reflector Archives - http://www.contesting.com/_topband

Topband: New user, some advice needed.

[Petronel Postolache]

Hi,

I got my first ham license 2 years ago, and because I couldn't install an
antenna at home, I've worked mostly portable (SOTA, WWFF activations).

In February 2016 participated on CQ 160 SSB from YR8E and got the
"contesting virus". So, I've started to built a QTH at my parents home,
about 1 hour drive from where I live.

The location is about 30x40m (100x130 feet) in a small town. The plans is
something like this : https://s30.postimg.org/qq94d2rpd/YP8_W.png

So far I've build a small tower 12m (40') with a triband yagi for 20/15/10m
bands
For 40m band I have a 1/4 vertical with 4 elevated radial.

With not so much space, not sure what I can build for 80m and especially
for 160m.
- Inverted L, 20m Al telescoing pipe + 20m slopping wire ?
- Vertical Al telescoping pipe 27m and some coil matching at the base ?
The problem is that a big part of the area is vineyard or other infield.
Can't install 30-60 radials, probably can install some elevated radials or
FCP. What other options I have?

For receiving I'm thinking for a vertical loop/flag, or even a vertical
Waller Flag.

Thank you in advance.

73,
Petronel
YO8SEP / YP8W
_
Topband Reflector Archives - http://www.contesting.com/_topband