You're probably right, my amp input should be a good match. No tuning
on my amp though, that is why I'm looking at a tuner. It is a magnus
solid state amp, puts out around 600 watts or so.
73
Butch Bussen
wa0vjr
open Node 3148
Las Vegas
On Fri, 17 Sep 2010,
colin McDonald wrote:
> isn't all that tuning of the amplifier partially responsible for tuning the
> input as well?
> seems to me that you shouldn't need to use any sort of tuner on the input of
> the amp from the radio.
> 73
> Colin, V A6BKX
> ----- Original Message -----
> From: "Steve Dresser" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Friday, September 17, 2010 6:23 PM
> Subject: Re: auto antenna tuner
>
>
>> Actually, you don't want to use the internal tuner when the amp is on. If
>> you did, you'd be attempting to match the input of your amplifier instead
>> of
>> your antenna.
>>
>> Steve
>>
>> ----- Original Message -----
>> From: "Butch Bussen" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Friday, September 17, 2010 12:43
>> Subject: Re: auto antenna tuner
>>
>>
>>> What I am wondering, if you have this interface, how do you also use the
>>> tuner in the radio. Maybe I wouldn't have to, but I'd want to use the
>>> internal tuner when the amp is on. Just wondering how you control both,
>>> or am I making this to complicated?
>>> 73
>>> Butch Bussen
>>> wa0vjr
>>> open Node 3148
>>> Las Vegas
>>>
>>>
>>> On Fri, 17 Sep 2010, Steve Dresser
>>> wrote:
>>>
>>>> John,
>>>>
>>>> Do they have an interface for the TS2000?
>>>>
>>>> Steve
>>>>
>>>> ----- Original Message -----
>>>> From: "John Miller" <[log in to unmask]>
>>>> To: <[log in to unmask]>
>>>> Sent: Friday, September 17, 2010 11:40
>>>> Subject: Re: auto antenna tuner
>>>>
>>>>
>>>>> The LDG tuners you can get an interface for and have for a long time,
>>>>> so
>>>>> you
>>>>> can hook it to the radio and use the tune button and it will drop the
>>>>> power
>>>>> and all.
>>>>> ----- Original Message -----
>>>>> From: "Steve Forst" <[log in to unmask]>
>>>>> To: <[log in to unmask]>
>>>>> Sent: Friday, September 17, 2010 11:10 AM
>>>>> Subject: Re: auto antenna tuner
>>>>>
>>>>>
>>>>>> Steve,
>>>>>>
>>>>>> Well I did take a deep breath before ordering. While I have never
>>>>>> had
>>>>>> a lot of MFJ stuff, the stuff I've had over the years has all worked
>>>>>> fine. I know others haven't been so lucky, but I've had this one
>>>>>> over
>>>>>> 2 years with no problems.
>>>>>>
>>>>>> I can't compare to the LDG since I've never owned one. At the time
>>>>>> of
>>>>>> purchase I did compare the specs for both. The LDG had 6 meter
>>>>>> coverage, but I work very little 6M and no amp, so no big deal. The
>>>>>> MFJ offered higher power (1.5K vs. 1K) as well as the ability to
>>>>>> automatically lower rf drive and change to cw for tuning, while the
>>>>>> LDG
>>>>>> required you to do all that manually. The MFJ also had the amp relay
>>>>>> connections. Of course LDG may have something out today with more
>>>>>> features.
>>>>>>
>>>>>> Truth is, I've switched the MFJ and the Palstar manual tuner in and
>>>>>> out
>>>>>> of the system a number of times over the past 2 years. Each has it's
>>>>>> benefits. I would have loved a Palstar auto tuner, but too rich for
>>>>>> me. The Palstar auto had a motor driven roller inductor and either
>>>>>> 1
>>>>>> or 2 moter driven caps. It just went out of production, but a new
>>>>>> one
>>>>>> is coming soon, although I've not seen any specs on it.
>>>>>>
>>>>>> 73, Steve KW3A
>>>>>>
>>>>>> On 9/17/2010 10:25 AM, Steve Dresser wrote:
>>>>>>> Steve,
>>>>>>>
>>>>>>> How do you think your MFJ auto-tuner stacks up against LDG's AT-1000?
>>>>>>> I'm
>>>>>>> sure the MFJ is cheaper, but based on things I've heard about other
>>>>>>> MFJ
>>>>>>> tuners, I wonder how reliable the internal components are.
>>>>>>>
>>>>>>> Steve
>>>>>>>
>>>>>>> ----- Original Message -----
>>>>>>> From: "Steve Forst"<[log in to unmask]>
>>>>>>> To:<[log in to unmask]>
>>>>>>> Sent: Friday, September 17, 2010 10:05
>>>>>>> Subject: Re: auto antenna tuner
>>>>>>>
>>>>>>>
>>>>>>>> Butch,
>>>>>>>>
>>>>>>>> I have a MFJ-998 in the shack. I'd give it a 4 out of 5 rating.
>>>>>>>> It
>>>>>>>> will handle 1500 watts, which is more then my AL-80B or THP solid
>>>>>>>> state
>>>>>>>> amp will put out. The problem I think you will find with auto
>>>>>>>> tuners
>>>>>>>> including the ones built into the radio is limited matching range
>>>>>>>> due
>>>>>>>> to
>>>>>>>> the fixed values of L and C. You won't be able to load your
>>>>>>>> grandmother's walker on 40 meters.
>>>>>>>> It has a ton of memories and up and down L and C buttons so you can
>>>>>>>> find
>>>>>>>> a match manually if the auto function can't. An optional 20$ cable
>>>>>>>> will interface to many rigs, and when connected this way hitting the
>>>>>>>> auto tune button on the rig bypasses the internal tuner, puts the
>>>>>>>> rig
>>>>>>>> into cw mode at low power for the tune process, then returns to
>>>>>>>> original mode and power when tuning is complete. If the amp relay
>>>>>>>> jacks on the tuner are connected between the amp and radio, the amp
>>>>>>>> will be bypassed during tune up. This relay is also supposed to
>>>>>>>> prevent the amp from keying in the event of a high swr, but I can't
>>>>>>>> say
>>>>>>>> that I've really tested this function fully.
>>>>>>>>
>>>>>>>> There are some menus for which sighted help would be needed, but
>>>>>>>> they
>>>>>>>> are the set it and forget it type of stuff. Things like swr point
>>>>>>>> at
>>>>>>>> which it should start looking for a better match, and swr point for
>>>>>>>> the
>>>>>>>> amp relay to bypass the amp.
>>>>>>>>
>>>>>>>> 73, Steve KW3A
>>>>>>>>
>>>>>
>>>>
>>>>
>>>
>
>
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