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Subject:
From:
David W Wood <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Sun, 21 May 2006 16:53:52 +0100
Content-Type:
text/plain
Parts/Attachments:
text/plain (207 lines)
All:
I wonder if the feed to the tuner is 75 ohms.

David


In message <[log in to unmask]>, John Miller
<[log in to unmask]> writes
>it's very hard to get 1 of those remote mobile tuners to work with a home 
>installation, it can be done but it's not easy. Reason being, most of them 
>are meant to tune whip antennas and only have 2 lead, instead of a shield 
>going to the outer ring of a pl259 connector, it gets the grounding through 
>the mounting and that's where you'd need to have the counter poise, that or 
>at the radio but even then I'd think you'd need it at the tuner as well. 
>that's how those were made. I know the SGC ones are anyway, not sure on the 
>LDG but I think they're pretty close. I'm talk about the remote tuners 
>though and if he's running the tuner that far away from the radio I'd hope 
>that's what he's running. If not the problem speaks for itself. I have one 
>for my 706 in my go kit, it's not a remote tuner and it works perfect but 
>the remote tuners really need that ground, they're not meant to substitute a 
>ballem in a home installation and I can certainly see why that wouldn't 
>work.
>----- Original Message ----- 
>From: "Anthony Vece" <[log in to unmask]>
>To: <[log in to unmask]>
>Sent: Tuesday, May 16, 2006 9:04 AM
>Subject: Re: LDG TW1 talking SWR meter
>
>
>> Hi John & List;
>>
>> I use the LDG auto tuner and it works great.
>>
>> I don't remember the model number but, I have a good ground on it and it
>> works like a charm.
>>
>> However, I can't tune 160 but, I really didn't expect to..
>>
>> 73 De Anthony W2AJV
>> [log in to unmask]
>>
>> ----- Original Message ----- 
>> From: "John Miller" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Monday, May 15, 2006 10:58 PM
>> Subject: Re: [BLIND-HAMS] LDG TW1 talking SWR meter
>>
>>
>>> If that's the tuner I'm looking at, it's meant for mobile use mainly so
>>> you'd need a very very good ground on that thing or it will cause issues.
>>> I might be looking at the wrong one but if I'm not, I don't know if you
>>> can even make the ground good enough to use it the way you're trying to.
>>> ----- Original Message ----- 
>>> From: "Steve Dresser" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Monday, May 15, 2006 10:01 PM
>>> Subject: Re: LDG TW1 talking SWR meter
>>>
>>>
>>>> Andy,
>>>>
>>>> If you get lots of RF when the tuner is near the house, it makes me
>>>> wonder if you need a better ground.  Do you have a ground on the
>>>> tuner?  If you don't, you might try grounding it just to see if
>>>> things get better.  What type of antenna are you using?  knowing that
>>>> might give me some more ideas on where to look next.
>>>>
>>>> Steve
>>>>
>>>> On Monday 5/15/06 16:50 andy m0ceg wrote:
>>>>>Hello Steve,  Well I need that length of cable  to reach the SGC Auto
>>>>>tuner,
>>>>>if I bring the unit nearer to the house I get a lot of RF.  if it is the
>>>>>coax then how would I work out the right length?   I am very grateful 
>>>>>for
>>>>>all the help you  are all giving me on this problem.  Many thanks for 
>>>>>all
>>>>>the help it is very much appreciated.
>>>>>----- Original Message -----
>>>>>From: "Steve Dresser" <[log in to unmask]>
>>>>>To: <[log in to unmask]>
>>>>>Sent: Monday, May 15, 2006 7:53 PM
>>>>>Subject: Re: LDG TW1 talking SWR meter
>>>>>
>>>>>
>>>>> > Andy,
>>>>> >
>>>>> > I wonder about all that coax between the rig and the tuner.  That
>>>>> > might be part of your problem.
>>>>> >
>>>>> > Steve
>>>>> >
>>>>> > On Monday 5/15/06 13:31 andy m0ceg wrote:
>>>>> >>Hello John,  The meter is about 12 inches from the rig the SGC auto
>>>>> >>atu is
>>>>> >>about 55 feet away up the garden.
>>>>> >>----- Original Message -----
>>>>> >>From: "John Miller" <[log in to unmask]>
>>>>> >>To: <[log in to unmask]>
>>>>> >>Sent: Monday, May 15, 2006 6:29 PM
>>>>> >>Subject: Re: LDG TW1 talking SWR meter
>>>>> >>
>>>>> >>
>>>>> >> > something else I wonder is where in line do you have the meter.
>>>>> >> > ----- Original Message -----
>>>>> >> > From: "Steve Dresser" <[log in to unmask]>
>>>>> >> > To: <[log in to unmask]>
>>>>> >> > Sent: Monday, May 15, 2006 12:24 PM
>>>>> >> > Subject: Re: LDG TW1 talking SWR meter
>>>>> >> >
>>>>> >> >
>>>>> >> >> Andy,
>>>>> >> >>
>>>>> >> >> I have the TW1, and believe it is reasonably accurate, although
>>>>> >> >> I've
>>>>> >> >> never compared its readings with those of another SWR meter.  If
>>>>> >> >> you're concerned about the meter's accuracy, you should ask
>>>>> >> >> someone
>>>>> >> >> with a meter of known accuracy to check your antenna and see if
>>>>> >> >> they
>>>>> >> >> get the same results.  You might also check your cables to make
>>>>> >> >> sure
>>>>> >> >> one of them hasn't developed a problem such as a short, or a bad
>>>>> >> >> connection.  Also, check to be sure your ground is adequate.  A
>>>>> >> >> bad
>>>>> >> >> ground is often the cause of poor performance.  Once you've done
>>>>> >> >> all
>>>>> >> >> that, you might contact the antenna manufacturer to see if they
>>>>> >> >> can
>>>>> >> >> offer suggestions.  One more thing: you said 1.6 meters, but did
>>>>> >> >> you
>>>>> >> >> really mean 160 meters?
>>>>> >> >>
>>>>> >> >> Steve
>>>>> >> >>
>>>>> >> >> On Monday 5/15/06 11:09 andy m0ceg wrote:
>>>>> >> >>>Hello All,  I am looking for your opinion on the LDG TW1 talking
>>>>> >> >>>SWR
>>>>> >> >>>meter,
>>>>> >> >>>How a accurate do you find it?  I am using this along with a SGC
>>>>> >> >>>230
>>>>> >> >>>Auto
>>>>> >> >>>ATU,  and the wire is the right length according to there manual,
>>>>> >> >>>I
>>>>> >> >>>can
>>>>> >> >>>tune up on 1.6 meters and 80 meters with a 1.01 SWR but all the
>>>>> >> >>>other
>>>>> >> >>>frequencies like 40 20 and the rest are over the 2.9 SWR I have
>>>>> >> >>>tried
>>>>> >> >>>every
>>>>> >> >>>thing I can think of to put this problem right and now I have run
>>>>> >> >>>out
>>>>> >> >>>of
>>>>> >> >>>Ideas,  and so have most of my fellow hams here in the UK.  It
>>>>> >> >>>doesn't
>>>>> >> >>>make
>>>>> >> >>>any sense as to it giving  me  the low SWR on two of the
>>>>> >> >>>frequencies
>>>>> >> >>>and
>>>>> >> >>>not
>>>>> >> >>>the others and the length of the antenna for those is shorter.  I
>>>>> >> >>>would
>>>>> >> >>>be
>>>>> >> >>>grateful for any Ideas that anyone can give me on this please.
>>>>> >> >>>Regards
>>>>> >> >>>Andrew Shipp
>>>>> >> >>>Located Northampton UK
>>>>> >> >>>Contact details
>>>>> >> >>>Home phone +44,0,1604 517007,
>>>>> >> >>>Mobile Orange network 07891809892
>>>>> >> >>>I am also  the Moderator for the blind-gardening group to join
>>>>> >> >>>[log in to unmask]
>>>>> >> >>
>>>>> >> >>
>>>>> >> >
>>>>> >> >
>>>>> >> > __________ NOD32 1.1538 (20060515) Information __________
>>>>> >> >
>>>>> >> > This message was checked by NOD32 antivirus system.
>>>>> >> > http://www.eset.com
>>>>> >> >
>>>>> >> >
>>>>> >
>>>>> >
>>>>> > __________ NOD32 1.1539 (20060515) Information __________
>>>>> >
>>>>> > This message was checked by NOD32 antivirus system.
>>>>> > http://www.eset.com
>>>>> >
>>>>> >
>>>>
>>>>
>>>
>>>
>>>
>>> -- 
>>> No virus found in this incoming message.
>>> Checked by AVG Free Edition.
>>> Version: 7.1.392 / Virus Database: 268.5.6/339 - Release Date: 5/14/2006
>>>
>>
>>
>

-- 
David W Wood

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