John,
Last night, I stumbled upon something that looks even more interesting than
the AT-1000Pro, and costs only a little more. A company called Maxxcom
makes an auto-tuner with a frequency range from 100KHz to 250MHz. According
to their specs, it can handle up to 1000watts, and tunes up in 1/1200 of a
second. The most intriguing part is that there are no power cables, and it
tunes in receive as well as transmit. I don't understand the theory of
operation, but it's all explained in detail on their Web site,
www.maxxcom.com. I've ordered their 1000 watt tuner, so I'll give you a
full report when it arrives. Stay tuned.
Steve
----- Original Message -----
From: "John Miller" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, February 13, 2008 22:28
Subject: Re: LDG AT-1000Pro
> I'm still waiting to put up my 6 meter antenna, I made a dipole and when I
> do my antenna work in the spring that will go up with a dedicated 40 meter
> dipole and my cobra ultralite. Someday my 900 MHZ repeater, 900 MHZ beam,
> and a ton of other projects I have piled up here will go up too but I'll
> take it 1 at a time.
> ----- Original Message -----
> From: "Steve Dresser" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, February 13, 2008 9:58 PM
> Subject: Re: LDG AT-1000Pro
>
>
>> Steve,
>>
>> Right now, I don't even have a 6 meter antenna, but since the radio has 6
>> meters, I want that band in the tuner. I have an Ameratron *11-H, and
>> haven't had any problems with it. I'm not as worried about hurting the
>> amp
>> as you might be since it's a tube amp, and tubes are a little more
>> forgiving
>> than transistors. I read some reviews on the AT-1000Pro, and two out of
>> three were favorable. The one that was slightly less so (3 out of 5) was
>> actually the best review, and his issue was that the tuner couldn't get
>> the
>> SWR all the way to 1:1. He also couldn't get his 160 meter dipole to
>> tune
>> up on other bands, so he finally bought a Palstar for almost twice the
>> price. I can't justify spending nearly $1300 for a tuner, especially
>> when
>> the radio itself doesn't cost that much.
>>
>> Steve
>>
>> ----- Original Message -----
>> From: "Steve Forst" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Wednesday, February 13, 2008 21:39
>> Subject: Re: LDG AT-1000Pro
>>
>>
>>> Steve,
>>>
>>> Yeah, the QC at MFJ is always a question. It's one reason I went with
>>> a
>>> THP amp instead of Ameritron. I would also like 6 meters and even
>>> though
>>> the LDG's power is limited to something like 250 watts on 6, it is
>>> still
>>> nice to have that band in the tuner.
>>>
>>> Good luck with any future purchase.
>>>
>>> 73, Steve KW3A
>>> ----- Original Message -----
>>> From: "Steve Dresser" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Wednesday, February 13, 2008 8:38 PM
>>> Subject: Re: LDG AT-1000Pro
>>>
>>>
>>>> Steve,
>>>>
>>>> You're right. The LDG manual specifically tells you to put the amp in
>>>> stand-by while tuning. That's probably not a bad idea anyway just in
>>>> case
>>>> something goes wrong.
>>>>
>>>> Steve
>>>>
>>>> ----- Original Message -----
>>>> From: "Steve Forst" <[log in to unmask]>
>>>> To: <[log in to unmask]>
>>>> Sent: Wednesday, February 13, 2008 19:27
>>>> Subject: Re: LDG AT-1000Pro
>>>>
>>>>
>>>>> As I re-read the manual for the LDG, it doesn't appear to have this
>>>>> feature. Also it looks as though you are supposed to manually put
>>>>> the
>>>>> amp
>>>>> into standby and tune at a low power setting on the LDG and then
>>>>> increase
>>>>> power and put amp into operate, all manually. It looks like the MFJ
>>>>> does
>>>>> all this with the touch of the tuner button on the rig ( of course
>>>>> with
>>>>> all
>>>>> needed cables connected).
>>>>>
>>>>> I'll have to investigate a bit more before plunking down any money.
>>>>> My
>>>>> Palstar manual tuner works fine, but the amp is swr sensitive and
>>>>> with
>>>>> small bandwidth on 160 and 80 I do a lot of antenna tuning.
>>>>>
>>>>> 73, Steve KW3A
>>>>> ----- Original Message -----
>>>>> From: "John Miller" <[log in to unmask]>
>>>>> To: <[log in to unmask]>
>>>>> Sent: Wednesday, February 13, 2008 7:06 PM
>>>>> Subject: Re: LDG AT-1000Pro
>>>>>
>>>>>
>>>>>> I've never seen one that bypasses the amp for high SWR but I thought
>>>>>> the
>>>>>> LDG
>>>>>> did say something about something like that in the manual.
>>>>>> ----- Original Message -----
>>>>>> From: "Steve Forst" <[log in to unmask]>
>>>>>> To: <[log in to unmask]>
>>>>>> Sent: Wednesday, February 13, 2008 5:57 PM
>>>>>> Subject: Re: LDG AT-1000Pro
>>>>>>
>>>>>>
>>>>>>> John,
>>>>>>>
>>>>>>> Will the LDG bypass the amp while tuning or in the case of high
>>>>>>> swr?
>>>>>>> I've
>>>>>>> looked at specs and manuals for a number of high power auto tuners,
>>>>>>> and
>>>>>>> while I may have missed something somewhere, I don't recall seeing
>>>>>>> it
>>>>>>> on
>>>>>>> other units.
>>>>>>>
>>>>>>> Other manufacturers may do something different, but it appears that
>>>>>>> in
>>>>>>> the
>>>>>>> 998 the amp keying line goes from rig to tuner and then to amp so
>>>>>>> the
>>>>>>> tuner can prevent the amp from being keyed during tune-up or in
>>>>>>> the
>>>>>>> event
>>>>>>> of high swr.
>>>>>>>
>>>>>>> Tnx for the info.
>>>>>>>
>>>>>>> 73, Steve KW3A
>>>>>>>
>>>>>>>
>>>>>>> ----- Original Message -----
>>>>>>> From: "John Miller" <[log in to unmask]>
>>>>>>> To: <[log in to unmask]>
>>>>>>> Sent: Wednesday, February 13, 2008 4:01 PM
>>>>>>> Subject: Re: LDG AT-1000Pro
>>>>>>>
>>>>>>>
>>>>>>>> The LDG one will do all that too.
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>
>
>
>
>
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