I received the below response from LDG when I enquired if the meter could
give accurate readings at 70mhz.
Sorry, we've never tested there. Since we use the input frequency in
calculating
the forward and reverse power, I'm guessing the it will not be accurate
there.
Though this appears a bit vague, it would suggest the TW2 probably won't be
all that reliable outside the pre-defined band ranges.
Cheers,
Tim, (GI4OPH)
------------------------
----- Original Message -----
From: "Senk, Mark J. (CDC/NIOSH/NPPTL)" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, February 27, 2008 1:36 PM
Subject: Re: TW2 question
> What happens if you transmit through the TW2 with the band on the =
> incorrect setting?
>
> I wonder if they switch a tuned circuit. =20
> If not, maybe they apply some factor to compensate for power =
> sensitivity. So, if you send 5 watts on 6 meters and the meter is set =
> to 2 meters, it might read higher. And higher yet when set to 1.25 =
> meters. =20
> Since the SWR is a ratio, it ought to remain the same regardless of the =
> TW2 band setting.
> If you plan to experiment, use a 50 ohm load and low power.
>
> Hey, don't call me if experimentation damages your TW2. =20
>
> Mark
> =20
>
>
> Mark J. Senk | 412-386-6513 | [log in to unmask]
> <img =
> src=3D"http://212.179.113.209/QRCode/img.php?d=3DBEGIN%3AVCARD%0AN%3AMark=
> %20J.%20Senk%0ATEL%3A412-386-6513%0AEMAIL%3Azia7%40cdc.gov%0AEND%3AVCARD&=
> c=3DContact%20Mark%20Senk&s=3D4"
> alt=3D"QR4Senk" />=A0
>
> -----Original Message-----
> From: For blind ham radio operators =
> [mailto:[log in to unmask]] On Behalf Of John Miller
> Sent: Tuesday, February 26, 2008 10:02 PM
> To: [log in to unmask]
> Subject: Re: TW2 question
>
> you push the outer 2 most buttons for 1 second and it will say what band =
> you're on, again changes it to the next band, it will say in voice what =
> band it's going in to.
> ----- Original Message -----
> From: "Lou Kline" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, February 26, 2008 8:53 PM
> Subject: Re: TW2 question
>
>
>> How do you set the band? I don't see anything on mine that looks like =
>
>> a band selector.
>>
>> --Lou K2LKK
>>
>>
>>
>> At 02:41 PM 2/26/2008 -0500, you wrote:
>>>Ah-ha. When all else fails read the manual. I got my TW-2 just=20
>>>before Christmas only because they were being discontinued and figured =
> I should
>>>grab it. Plugged it in to hear it speak, but have never used it or =
> read
>>>the manual So now I see how to set the band.
>>>
>>>many tnx Butch and John. I would have been very confused if I had=20
>>>tried using it without setting the band.
>>>
>>>73, Steve KW3A
>>>----- Original Message -----
>>>From: "Butch Bussen" <[log in to unmask]>
>>>To: <[log in to unmask]>
>>>Sent: Tuesday, February 26, 2008 2:20 PM
>>>Subject: Re: TW2 question
>>>
>>>
>>> > You do have to select ehe band on the tw2, it goes from 50, 144,=20
>>> > 220, and 440. I don't know how broad these bands are, but=20
>>> > certainly not that narrow. These types of readings are all=20
>>> > relative anyhow. I'm sure the
>>> > 6 meter band would be close enough for the 70 meg band. BTW, what=20
>>> > was the web page that had the a c adapters? I called a e s and=20
>>> > they didn't have a clue, said they didn't have anything.
>>> > 73s
>>> > Butch Bussen
>>> > wa0vjr
>>> >
>>> > On Tue, 26 Feb 2008, Steve
>>> > Forst wrote:
>>> >
>>> >> Tim,
>>> >>
>>> >> LDG is *very* good at answering e-mails. I would contact them and =
>
>>> >> try and get the real answer.
>>> >>
>>> >> [log in to unmask]
>>> >>
>>> >> since it is microprocessor controlled, there may be something=20
>>> >> encoded that will not allow you to do what you want.
>>> >>
>>> >> I must admit I am confused about what John said. While the =
> manual=20
>>> >> says
>>> >> something like "Simply select the band you wish to operate on..."=20
>>> >> I assumed it was refering to selecting the band on your=20
>>> >> transceiver, not on the TW-2.
>>> >> The only controls I am aware of on my TW-2 are the same as on the
>>> >> TW-1: F
>>> >> power, R power and swr buttons and a volume knob. Maybe I am=20
>>> >> missing something besides my hair.
>>> >>
>>> >> 73, Steve KW3A.
>>> >>
>>> >>
>>> >> ----- Original Message -----
>>> >> From: "John Miller" <[log in to unmask]>
>>> >> To: <[log in to unmask]>
>>> >> Sent: Tuesday, February 26, 2008 11:33 AM
>>> >> Subject: Re: TW2 question
>>> >>
>>> >>
>>> >>> I know you have to change bands on it, but how far it extends to=20
>>> >>> I don't know, for example, I can use the 440 setting to measure=20
>>> >>> GMRS in the
>>> >>> 467
>>> >>> range, where I checked mine and it works. I know you have to set=20
>>> >>> the band, but how far each one actually extends to is a good=20
>>> >>> question.
>>> >>> ----- Original Message -----
>>> >>> From: "Tim Crawford" <[log in to unmask]>
>>> >>> To: <[log in to unmask]>
>>> >>> Sent: Tuesday, February 26, 2008 11:27 AM
>>> >>> Subject: TW2 question
>>> >>>
>>> >>>
>>> >>>> Hi,
>>> >>>>
>>> >>>> Does the TW2 measure continuously between 50 and 144 mhz, or are =
>
>>> >>>> the =3D bands set as defined ranges?
>>> >>>>
>>> >>>> Reason for asking is that here in the UK, we have a frequency=20
>>> >>>> allocation =3D at 70mhz, (4 meters).
>>> >>>>
>>> >>>> Cheers,
>>> >>>>
>>> >>>> Tim, (GI4OPH)
>>> >>>>
>>> >>>
>>> >>>
>>> >>>
>>> >>
>>> >
>>> >
>>> >
>>>
>>>
>>>
>>>
>>>--
>>>No virus found in this incoming message.
>>>Checked by AVG Free Edition.
>>>Version: 7.5.516 / Virus Database: 269.21.1/1300 - Release Date:=20
>>>2/26/2008 7:50 PM
>>
>> Louis Kim Kline
>> A.R.S. K2LKK
>> Home e-mail: [log in to unmask]
>> Work e-mail: [log in to unmask] Work Telephone: (585) 697-5740
>>=20
>
>
> --
> This email has been verified as Virus free.
> Virus Protection and more available at http://www.plus.net
>
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