Check out the excel spread sheet for the AH-4 long wire antenna
lengths in the file section of the group


--- In YaesuTuner@..., "Clive" <l81ker@y...> wrote:

Aha, so basically I hit smack in the midst of the next "bad"

point,

277ft (84.4m) to 283ft (86.25m) - my landlord is advertising for
rent the place adjoining mine, and he's already given the ok for

the

ham antenna, and cos he's showing the place I slung my wire up
without research or planning, and the longest bit to hand that
wasn't bright red or yellow/green happened to be that long :>]

Seems like I need to trim it to 270ft! (82.29m)

I'll try trimming it and see what happens next....


Keep you all informed and if success is my reward then I'll post
pics.

Cheers
Clive

OH/G1WZM aka 9V1AZ



--- In YaesuTuner@..., gkstemple@a... wrote:

In a message dated 1/23/2006 1:59:31 PM Central Standard Time,
l81ker@y... writes:

Hi folks, after moving to FINLAND where its very cold now, I

put

up a

longwire loop of approx 84 metres of wire. Its fed with 300-

ohms

radioshack line.

The tuner WON'T tune this on the lower bands (but its fantastic

on

20m.)

I'm going to try shortening the loop slightly to around 81m,

but

before that has anyone got any advice? Why is the SWR so high

for

the

tuner?

Antenna is about 5m up, and the feedline is about 4.5m.

Ground here is solid granite rock... hence the loop!

Cheers
Clve4



The short answer is "High Current."

Look at the AH-4 Graphical Wire Length Calculator in the files

section of

this group. Yes, the AH-4 is an Icom product, but it is the

wire

length that

is important, not the brand of tuner.
The file is in Xcel 2003. As is, it's set for dipole/long wire,

but the

constant is given for loops too.

Plug in the constant for loops and AVOID the lengths shown on

the

chart.

Try to find a length that has no data points on the graph.

Remember to start

long and trim slowly.

_
()

73
Gary
KC9DJQ

Aha, so basically I hit smack in the midst of the next "bad" point,
277ft (84.4m) to 283ft (86.25m) - my landlord is advertising for
rent the place adjoining mine, and he's already given the ok for the
ham antenna, and cos he's showing the place I slung my wire up
without research or planning, and the longest bit to hand that
wasn't bright red or yellow/green happened to be that long :>]

Seems like I need to trim it to 270ft! (82.29m)

I'll try trimming it and see what happens next....


Keep you all informed and if success is my reward then I'll post
pics.

Cheers
Clive

OH/G1WZM aka 9V1AZ



--- In YaesuTuner@..., gkstemple@a... wrote:

In a message dated 1/23/2006 1:59:31 PM Central Standard Time,
l81ker@y... writes:

Hi folks, after moving to FINLAND where its very cold now, I put

up a

longwire loop of approx 84 metres of wire. Its fed with 300-ohms
radioshack line.

The tuner WON'T tune this on the lower bands (but its fantastic

on

20m.)

I'm going to try shortening the loop slightly to around 81m, but
before that has anyone got any advice? Why is the SWR so high for

the

tuner?

Antenna is about 5m up, and the feedline is about 4.5m.

Ground here is solid granite rock... hence the loop!

Cheers
Clve4



The short answer is "High Current."

Look at the AH-4 Graphical Wire Length Calculator in the files

section of

this group. Yes, the AH-4 is an Icom product, but it is the wire

length that

is important, not the brand of tuner.
The file is in Xcel 2003. As is, it's set for dipole/long wire,

but the

constant is given for loops too.

Plug in the constant for loops and AVOID the lengths shown on the

chart.

Try to find a length that has no data points on the graph.

Remember to start

long and trim slowly.

_
()

73
Gary
KC9DJQ

开云体育

In a message dated 1/23/2006 1:59:31 PM Central Standard Time, l81ker@... writes:

Hi folks, after moving to FINLAND where its very cold now, I put up a
longwire loop of approx 84 metres of wire. Its fed with 300-ohms
radioshack line.

The tuner WON'T tune this on the lower bands (but its fantastic on
20m.)

I'm going to try shortening the loop slightly to around 81m, but
before that has anyone got any advice? Why is the SWR so high for the
tuner?

Antenna is about 5m up, and the feedline is about 4.5m.

Ground here is solid granite rock... hence the loop!

Cheers
Clve4

The short answer is "High Current."

?

Look at the AH-4 Graphical Wire Length Calculator in the files section of this group.? Yes, the AH-4 is an Icom product, but it is the wire length that is important, not the brand of tuner.

The file is in Xcel 2003.? As is, it's set for dipole/long wire, but the constant is given for loops too.

?

Plug in the constant for loops and AVOID the lengths shown on the chart.? Try to find a length that has no data points on the graph.? Remember to start long and trim slowly.

?

?

73

Gary

KC9DJQ?

Hi folks, after moving to FINLAND where its very cold now, I put up a
longwire loop of approx 84 metres of wire. Its fed with 300-ohms
radioshack line.

The tuner WON'T tune this on the lower bands (but its fantastic on
20m.)

I'm going to try shortening the loop slightly to around 81m, but
before that has anyone got any advice? Why is the SWR so high for the
tuner?

Antenna is about 5m up, and the feedline is about 4.5m.

Ground here is solid granite rock... hence the loop!

Cheers
Clve4

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the YaesuTuner
group.

File : /AH-4 Graphical Wire Length Calculator 2.2.xls
Uploaded by : kc9anq <kc9anq@...>
Description : Use this to calculate what lengths to avoid when puting up a long wire. This spread sheet was made by W4TME for the Icom AH-4 tuner. Antenna theory is Antenna Theory so this will work for the Yaesu FC-40. Just read the directions and DO NOT USE THE LENGHTS LISTED IN GREY WHITE AND RED THOSE ARE THE AVOIDED LENGTHS, USE THE "WIRE WINDOWS" ON THE CHART!

You can access this file at the URL:


To learn more about file sharing for your group, please visit:


Regards,

kc9anq <kc9anq@...>

---

Something to write home about. Just $16.99/mo. or less

Kyle,
The 5 turns did the trick and it is tuning great now, thanks for
your help!
N5DMT
Bob

--- In YaesuTuner@..., Kyle N4NSS <n4nss@y...> wrote:

Bob,
You could try two things:
1. Put about five turns of coax about 5 inches in diameter at

the base of the antenna.

2. Put a few turns ( 10 X 1" ) of #14 gage wire at the base of

the antenna.

I'm just guessing here but, good luck!

Bob Lancon <N5DMT@a...> wrote:
Kyle, thanks for the response. I did play with it a little last

night and noticed that it does tune from 7.050 to 7.200 but any
higher will produce high SWR.... I will try adding the Ground to
the base of the whip and see if this helps... When you say a few

turns of coil at the base of the antenna are you talking about

coiling the coax and making a choke? Again, thanks for the help.

N5DMT
Bob
--- In YaesuTuner@..., Kyle N4NSS <n4nss@y...> wrote:

The Ham Stick has inductance. Add a few turns of coil at the

base

of the antenna.

OR improve the bumper to chassis ground. or Both.

Make sure the tuner is close to the base of the antenna.


Bob Lancon <N5DMT@a...> wrote:
Just installed the Ft-857D, FC-40, Hustler bumper strap mount

and 102"

SS Whip in my truck. It works on all bands but 40 meters (high

SWR) I

have tried extra lenght of coax added to the supplied coax. I

have

added Ground cable from tuner to frame and still no luck.... I

did

put

a 40 meter Ham Stick on it and it tuned it no problem. Any

suggestions

would be appreciated.
Thanks
Bob





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Kyle, thanks for the response.? I did play with it a little last night and noticed that it does tune from 7.050 to 7.200 but any higher will produce high SWR....? I will try adding the Ground to the base of the whip and see if this helps...? When you say a few
turns of coil at the base of the antenna are you talking about coiling the coax and making a choke?? Again, thanks for the help.
N5DMT
Bob
--- In YaesuTuner@..., Kyle N4NSS wrote:
>
> The Ham Stick has inductance.? Add a few turns of coil at the base
of the antenna.
>?? OR improve the bumper to chassis ground. or Both.
>???
>?? Make sure the tuner is close to the base of the antenna.
>??
>
> Bob Lancon wrote:
>?? Just installed the Ft-857D, FC-40, Hustler bumper strap mount
and 102"
> SS Whip in my truck. It works on all bands but 40 meters (high
SWR) I
> have tried extra lenght of coax added to the supplied coax. I have
> added Ground cable from tuner to frame and still no luck.... I did
put
> a 40 meter Ham Stick on it and it tuned it no problem. Any
suggestions
> would be appreciated.
> Thanks
> Bob?
>
>
>
>
>????
> ---------------------------------
>?? YAHOO! GROUPS LINKS
>
>????
>???? Visit your group "YaesuTuner" on the web.
>????
>???? To unsubscribe from this group, send an email to:
>? YaesuTuner-unsubscribe@...
>????
>???? Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
>
>????
> ---------------------------------
>??
>
>??
>
>
> ????? ????? ?????
> ---------------------------------
> Yahoo! Photos
>? Ring in the New Year with Photo Calendars. Add photos, events,
holidays, whatever.
>

---

Yahoo! Photos
Ring in the New Year with . Add photos, events, holidays, whatever.

Kyle, thanks for the response. I did play with it a little last
night and noticed that it does tune from 7.050 to 7.200 but any
higher will produce high SWR.... I will try adding the Ground to
the base of the whip and see if this helps... When you say a few
turns of coil at the base of the antenna are you talking about
coiling the coax and making a choke? Again, thanks for the help.
N5DMT
Bob
--- In YaesuTuner@..., Kyle N4NSS <n4nss@y...> wrote:

The Ham Stick has inductance. Add a few turns of coil at the base

of the antenna.

OR improve the bumper to chassis ground. or Both.

Make sure the tuner is close to the base of the antenna.


Bob Lancon <N5DMT@a...> wrote:
Just installed the Ft-857D, FC-40, Hustler bumper strap mount

and 102"

SS Whip in my truck. It works on all bands but 40 meters (high

SWR) I

have tried extra lenght of coax added to the supplied coax. I have
added Ground cable from tuner to frame and still no luck.... I did

put

a 40 meter Ham Stick on it and it tuned it no problem. Any

suggestions

would be appreciated.
Thanks
Bob





---------------------------------
YAHOO! GROUPS LINKS


Visit your group "YaesuTuner" on the web.

To unsubscribe from this group, send an email to:
YaesuTuner-unsubscribe@...

Your use of Yahoo! Groups is subject to the Yahoo! Terms of

Service.

---------------------------------






---------------------------------
Yahoo! Photos
Ring in the New Year with Photo Calendars. Add photos, events,

holidays, whatever.

Just installed the Ft-857D, FC-40, Hustler bumper strap mount and 102"
SS Whip in my truck. It works on all bands but 40 meters (high SWR) I
have tried extra lenght of coax added to the supplied coax. I have
added Ground cable from tuner to frame and still no luck.... I did put
a 40 meter Ham Stick on it and it tuned it no problem. Any suggestions
would be appreciated.
Thanks
Bob?

---

Yahoo! Photos
Ring in the New Year with . Add photos, events, holidays, whatever.

Just installed the Ft-857D, FC-40, Hustler bumper strap mount and 102"
SS Whip in my truck. It works on all bands but 40 meters (high SWR) I
have tried extra lenght of coax added to the supplied coax. I have
added Ground cable from tuner to frame and still no luck.... I did put
a 40 meter Ham Stick on it and it tuned it no problem. Any suggestions
would be appreciated.
Thanks
Bob

Any suggestions for removing RF on the control cable for the FC-40.? I
was unable to get the tuner to tune a long wire except for 80 meters.?
I installed dipoles for 40 through 15 meters.? When I use the 15-meter
dipole, the radio does funny things.? I determined that there was RF
coming in on the control cable.

I have several chokes on cable and this does not seem to help.? Any
suggestions?

I know that I really need to improve my grounding, but it is kind of
hard when there is limestone and rock 3-inches below the dirt.

Thanks and Happy New Year!

---

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---

Yahoo! for Good -

try running a few 1/4 wave radials for each band from the ground side

how long is you wire?


--- In YaesuTuner@..., "wa5vro" <txwa5vro@a...> wrote:

Any suggestions for removing RF on the control cable for the FC-

40. I

was unable to get the tuner to tune a long wire except for 80

meters.

I installed dipoles for 40 through 15 meters. When I use the 15-

meter

dipole, the radio does funny things. I determined that there was

RF

coming in on the control cable.

I have several chokes on cable and this does not seem to help.

Any

suggestions?

I know that I really need to improve my grounding, but it is kind

of

hard when there is limestone and rock 3-inches below the dirt.

Thanks and Happy New Year!

Any suggestions for removing RF on the control cable for the FC-40. I
was unable to get the tuner to tune a long wire except for 80 meters.
I installed dipoles for 40 through 15 meters. When I use the 15-meter
dipole, the radio does funny things. I determined that there was RF
coming in on the control cable.

I have several chokes on cable and this does not seem to help. Any
suggestions?

I know that I really need to improve my grounding, but it is kind of
hard when there is limestone and rock 3-inches below the dirt.

Thanks and Happy New Year!

Hi folks, I'm new round here

I use an FT 897d and have recently come by an atas-25 (the manual
version of an atas 120)

I was wondering about feeding the atas-25 via the fc40 to avoid the
manual tuning or am I just being plain silly!

thanks in advance

Best wishes, John MM1ANP

I am using both the LDG "AT-897" and my FC-40 with three antennas and
a control switch. Is anyone else doing the same?

The control cable for the AT-897 is connected to the back of my FT-
897D in the usual manner at the radio's Antenna Tuner port and the
control cable for the FC-40 is connected to the AT-897's auxilary
Antenna Tuner port at the lower backside.

I also have the auto-tune cable connecting my AT-897 to the ACC port
on the back of the FT-897D. This makes tuning the AT-897 really
simple: just push the button on the AT-897 for a few seconds, the red
light on the turner turns on, and the radio goes into a transmit stage
automatically while the AT-897 seeks a match. This is a great solution
for 60 meters.

The coax cables for my three antennas are connected to a three
position switch, 1 is my "Cobra Junior", 2 is my FC-40 random wire,
and 3 is a resonate 75 meter dipole.

To use the antennas:

Antenna 1: (a "Cobra Junior") - I switch the cable switch to the first
position and depress the AT-897's tune button.

Antenna 2: (a 93 foot wire connected to the FC-40) - I switch the
antenna selector to the second position; Tap the button on the AT-897
once quickly, which shuts off the AT-897 and passes everything through
like it's not there; then I touch the TUNE button on the FT-897D (menu
k or the F1 programmable key on my MH-59).

Antenna 3: (75 meter dipole) - I simply switch the antenna selector to
the third position and depress the tune button on the AT-897 once
quickly. No tuning is required.

The only quirky thing that seems to happen is with the AT-897...
evidently touching the tune button is a toggle and it's sometimes hard
to know what position it's in. If I get a HSWR when tuning my FC-40,
I have to flip over to my first antenna, tune it first with the AT-897
and then flip back to the FC-40 and shut off the AT-897 as I described
earlier.

There doesn't appear to be any loop issues and signal reports are
excellent for all antennas although comparisons between my "Cobra
Junior" and my FC-40 on 40 meters always favor my FC-40 by about 2 "S"
units.

Regards,
Paul
KA6GEM

---

Yahoo! Shopping
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Please see my eHam review of the FC-40 under Product Reviews/Antenna
Tuners. I reported that the control cable can be extended quite a
bit:

"Since I wired my shack with the control cable that accompanied the
FC-40, I purchased an additional DIN control cable from the parts
department of Yaesu and set it aside in my duffle bag for going
portable. It is replacement part no. T9101543A and sells for $34.81
plus tax and shipping.

This eight-pin "Mini-DIN" control cable appears to be similar to the
Apple Macintosh serial printer cable for their ImageWriter printer
but, like most bi-directional printer cables, one or two wires are
crossed (pins 6 and 8 for the Apple) making it useless, as I
discovered, for the FC-40. However, a Mini-DIN-8 extension cable
(such as the ten foot male to female "Cablestogo.com" No. 09569)
works very nicely, since the wires and pins are straight through.
This kind of extension cord is becoming hard to find as printer
cables are now USB. So far, I have extended the control cable to a
total of 60 feet with no loss in performance.

Regards,
Paul
KA6GEM


--- In YaesuTuner@..., "Mike GU4EON" <gu4eon@c...> wrote:

In GU we don't pay VAT and it's still 14.62 USD!

PS and average house price 525000 usd!

Must go, I hear violins playing in the background!

;-)

Mike GU4EON

-----Original Message-----
From: YaesuTuner@...

[mailto:YaesuTuner@...]On

Behalf Of Rick Stirling
Sent: 08 December 2005 21:51
To: yaesutuner@...
Subject: RE: [YaesuTuner] FC-40, Control Cable Extension


That's VAT for you! ;-(

Rick AE7RS

On 12/8/2005 2:47:23 PM, Mike GU4EON (gu4eon@c...) wrote:
> Stange how "the same cable" costs 17.23 USD in EU!
>
> Mike GU4EON





Yahoo! Groups Links

In GU we don't pay VAT and it's still 14.62 USD!

PS and average house price 525000 usd!

Must go, I hear violins playing in the background!

;-)

Mike GU4EON