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Using a Balanced Line Tuner


Doug
 

Hi, 滨’惫别 just set up a doublet with ladder line to a MFJ Versa III Tuner to my 857D. 滨’惫别 adjusted the tuner to the “loudest sound”, about S7 on 20M. Next step is to transmit on low power and fine tune. Problem, no matter what I set the RF gain to I’m only seeing 5-10W out on the tuner meter and it’s all reflected. On the radio when I transmit, the SWR looks to be around 2-3, power under 50% (with radio RFgain set to 100W).

I’m receiving fine, I live in Ontario EN94np and picking up brothers in the US clearly. Do you think there’s a setting on the radio that 滨’惫别 missed to make it work with the external balanced line tuner (I‘ve played with menu item 085). Thanks in advance.

Doug
VE3DGY


 

Sure you don't have the antenna connections reversed on the tuner? Only having reflected power usually indicates they are reversed.
--
Leonard K. Pennock (AD7AS)

On January 9, 2021 5:45:36 PM MST, Doug <Decadic@...> wrote:
Hi, 滨’惫别 just set up a doublet with ladder line to a MFJ Versa III
Tuner to my 857D. 滨’惫别 adjusted the tuner to the “loudest sound”, about
S7 on 20M. Next step is to transmit on low power and fine tune.
Problem, no matter what I set the RF gain to I’m only seeing 5-10W out
on the tuner meter and it’s all reflected. On the radio when I
transmit, the SWR looks to be around 2-3, power under 50% (with radio
RFgain set to 100W).

I’m receiving fine, I live in Ontario EN94np and picking up brothers in
the US clearly. Do you think there’s a setting on the radio that 滨’惫别
missed to make it work with the external balanced line tuner (I‘ve
played with menu item 085). Thanks in advance.

Doug
VE3DGY


Doug
 

Thx Leonard, nope that wasn’t it. Found it tonight - wasn’t the radio. My feed line was close to 60’ - this is too close to the quarter wave dipole I had up (130’) . I added 20’ to the ladder line and then it would tune.

Doug

On Jan 10, 2021, at 11:11 PM, Leonard K. Pennock <leonardpennock@...> wrote:

?Sure you don't have the antenna connections reversed on the tuner? Only having reflected power usually indicates they are reversed.
--
Leonard K. Pennock (AD7AS)

On January 9, 2021 5:45:36 PM MST, Doug <Decadic@...> wrote:
Hi, 滨’惫别 just set up a doublet with ladder line to a MFJ Versa III
Tuner to my 857D. 滨’惫别 adjusted the tuner to the “loudest sound”, about
S7 on 20M. Next step is to transmit on low power and fine tune.
Problem, no matter what I set the RF gain to I’m only seeing 5-10W out
on the tuner meter and it’s all reflected. On the radio when I
transmit, the SWR looks to be around 2-3, power under 50% (with radio
RFgain set to 100W).

I’m receiving fine, I live in Ontario EN94np and picking up brothers in
the US clearly. Do you think there’s a setting on the radio that 滨’惫别
missed to make it work with the external balanced line tuner (I‘ve
played with menu item 085). Thanks in advance.

Doug
VE3DGY





 

Glad you found it.
--
Leonard K. Pennock (AD7AS)

On January 10, 2021 9:16:14 PM MST, Doug <Decadic@...> wrote:
Thx Leonard, nope that wasn’t it. Found it tonight - wasn’t the radio.
My feed line was close to 60’ - this is too close to the quarter wave
dipole I had up (130’) . I added 20’ to the ladder line and then it
would tune.

Doug

On Jan 10, 2021, at 11:11 PM, Leonard K. Pennock
<leonardpennock@...> wrote:

?Sure you don't have the antenna connections reversed on the tuner?
Only having reflected power usually indicates they are reversed.
--
Leonard K. Pennock (AD7AS)

On January 9, 2021 5:45:36 PM MST, Doug <Decadic@...> wrote:
Hi, 滨’惫别 just set up a doublet with ladder line to a MFJ Versa III
Tuner to my 857D. 滨’惫别 adjusted the tuner to the “loudest sound”,
about
S7 on 20M. Next step is to transmit on low power and fine tune.
Problem, no matter what I set the RF gain to I’m only seeing 5-10W
out
on the tuner meter and it’s all reflected. On the radio when I
transmit, the SWR looks to be around 2-3, power under 50% (with
radio
RFgain set to 100W).

I’m receiving fine, I live in Ontario EN94np and picking up brothers
in
the US clearly. Do you think there’s a setting on the radio that
滨’惫别
missed to make it work with the external balanced line tuner (I‘ve
played with menu item 085). Thanks in advance.

Doug
VE3DGY






Bob L
 

开云体育

Good thinking, congrats, I have that antenna, and I love it. Once you find the settings for each band, write them down, I call it my cheat sheet, makes tuning next time much easier.
73 Bob



Sent from my Verizon, Samsung Galaxy smartphone


-------- Original message --------
From: Doug <Decadic@...>
Date: 1/10/21 9:16 PM (GMT-07:00)
Subject: Re: [FT-857] Using a Balanced Line Tuner

Thx Leonard, nope that wasn’t it. Found it tonight - wasn’t the radio. My feed line was close to 60’ - this is too close to the quarter wave dipole I had up (130’) . I added 20’ to the ladder line and then it would tune.

Doug

> On Jan 10, 2021, at 11:11 PM, Leonard K. Pennock <leonardpennock@...> wrote:
>
> ?Sure you don't have the antenna connections reversed on the tuner? Only having reflected power usually indicates they are reversed.
> --
> Leonard K. Pennock (AD7AS)
>
>> On January 9, 2021 5:45:36 PM MST, Doug <Decadic@...> wrote:
>> Hi, 滨’惫别 just set up a doublet with ladder line to a MFJ Versa III
>> Tuner to my 857D. 滨’惫别 adjusted the tuner to the “loudest sound”, about
>> S7 on 20M. Next step is to transmit on low power and fine tune.
>> Problem, no matter what I set the RF gain to I’m only seeing 5-10W out
>> on the tuner meter and it’s all reflected. On the radio when I
>> transmit, the SWR looks to be around 2-3, power under 50% (with radio
>> RFgain set to 100W).
>>
>> I’m receiving fine, I live in Ontario EN94np and picking up brothers in
>> the US clearly. Do you think there’s a setting on the radio that 滨’惫别
>> missed to make it work with the external balanced line tuner (I‘ve
>> played with menu item 085). Thanks in advance.
>>
>> Doug
>> VE3DGY
>>
>>
>
>
>
>
>






Doug
 

开云体育

Great idea, thx Bob!

73
Doug

On Jan 11, 2021, at 12:16 AM, Bob L via groups.io <wa7dxz@...> wrote:

?
Good thinking, congrats, I have that antenna, and I love it. Once you find the settings for each band, write them down, I call it my cheat sheet, makes tuning next time much easier.
73 Bob



Sent from my Verizon, Samsung Galaxy smartphone


-------- Original message --------
From: Doug <Decadic@...>
Date: 1/10/21 9:16 PM (GMT-07:00)
Subject: Re: [FT-857] Using a Balanced Line Tuner

Thx Leonard, nope that wasn’t it. Found it tonight - wasn’t the radio. My feed line was close to 60’ - this is too close to the quarter wave dipole I had up (130’) . I added 20’ to the ladder line and then it would tune.

Doug

> On Jan 10, 2021, at 11:11 PM, Leonard K. Pennock <leonardpennock@...> wrote:
>
> ?Sure you don't have the antenna connections reversed on the tuner? Only having reflected power usually indicates they are reversed.
> --
> Leonard K. Pennock (AD7AS)
>
>> On January 9, 2021 5:45:36 PM MST, Doug <Decadic@...> wrote:
>> Hi, 滨’惫别 just set up a doublet with ladder line to a MFJ Versa III
>> Tuner to my 857D. 滨’惫别 adjusted the tuner to the “loudest sound”, about
>> S7 on 20M. Next step is to transmit on low power and fine tune.
>> Problem, no matter what I set the RF gain to I’m only seeing 5-10W out
>> on the tuner meter and it’s all reflected. On the radio when I
>> transmit, the SWR looks to be around 2-3, power under 50% (with radio
>> RFgain set to 100W).
>>
>> I’m receiving fine, I live in Ontario EN94np and picking up brothers in
>> the US clearly. Do you think there’s a setting on the radio that 滨’惫别
>> missed to make it work with the external balanced line tuner (I‘ve
>> played with menu item 085). Thanks in advance.
>>
>> Doug
>> VE3DGY
>>
>>
>
>
>
>
>