Good point, Colin. I'm not certain which oscillator it is, and now that I
think of it, it might be the phase lock loop, which has to be very stable.
My point, though, is that in most cases, the radio is stable enough that you
don't need anything more than what's already there. In fact, I didn't even
know there was such an option for the 480 until I heard talk of it on this
list.
Steve
----- Original Message -----
From: "Colin McDonald" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, February 08, 2008 22:14
Subject: Re: ts480
>i thought they used a microchip or micro processor to control the radios
> oscillator these days? I'm surprised they still use crystals.
> At any rate, I am certain, that with modern processors, they already have
> something in place to correct for any drift.
> Also, and I might be totally off on this, when they talk about drift,
> don't
> they usually mean perhaps a few Hz, like no more then 10HZ either way?
> And, even with the use of a crystal oscillator, as I said, the onboard
> processor will likely adjust for any major drift anyway right.
> I can see the usefulness of a t x o in an older radio that is subject to
> noticeable drift but not with modern radios.
>
> 73
> Colin, V A6BKX
> ----- Original Message -----
> From: "Steve Dresser" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Friday, February 08, 2008 7:11 PM
> Subject: Re: ts480
>
>
>> Tom,
>>
>> "TXO" refers to an oven which can be installed to keep the main
>> oscillator
>> crystal at a constant temperature. Before you go out and buy one, try
>> running the radio in your motor home for a while and see if it drifts
>> more
>> than you want it to. If it does, buy the TXO option, but if you don't
>> notice the drift, don't worry about it. Believe me, you'll know if you
> need
>> it.
>>
>> Steve
>>
>> ----- Original Message -----
>> From: "T Behler" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Friday, February 08, 2008 19:37
>> Subject: Re: ts480
>>
>>
>> > Steve:
>> >
>> > I asked this question in my last post, but can you tell me about the
>> > TXO
>> > for
>> > the TS480.
>> >
>> > Since my new TS480 will eventually end up in our motor home which could
>> > indeed be subject to considerable temperature fluctuations, especially
>> > when
>> > the motor home is sitting idle on warm summer days, maybe this is
>> > something
>> > I should think about.
>> >
>> > Thanks, and 73 from Tom Behler: KB8TYJ
>> >
>> > ----- Original Message -----
>> > From: "Steve Dresser" <[log in to unmask]>
>> > To: <[log in to unmask]>
>> > Sent: Friday, February 08, 2008 11:01 AM
>> > Subject: Re: ts480
>> >
>> >
>> >> The only time you really need a TXO is when you're operating the radio
> in
>> >> a
>> >> hostile environment where you have large temperature variations. For
>> >> example, a car which stays outside in the winter time. If you only
>> >> use
>> >> the
>> >> radio at home, you won't notice any difference with or without the
>> >> TXO.
>> >>
>> >> Steve
>> >>
>> >> ----- Original Message -----
>> >> From: "David R. Basden" <[log in to unmask]>
>> >> To: <[log in to unmask]>
>> >> Sent: Friday, February 08, 2008 10:34
>> >> Subject: Re: ts480
>> >>
>> >>
>> >>> The TS-480 is amazingly stable without the TXO. Unless you are super
>> >>> fussy, you won't need it. I have a friend who bought one for his
>> >>> TS-830 some years back and said he really couldn't detect the
>> >>> improvement.
>> >>>
>> >>> At 01:16 PM 2/7/2008, you wrote:
>> >>>>Hello;
>> >>>>I ran across a reasonably priced ts480 used on the arrl site. It is
>> >>>>long
>> >>>>gone but I'm wondering how difficult it was to install the voice
>> >>>>guide
>> >>>>and
>> >>>>filters? are they plug in?
>> >>>>Also have folks found that they needed or wanted the tcxo extra for
> the
>> >>>>ts480?
>> >>>>Richard
>> >>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>>--
>> >>>>No virus found in this incoming message.
>> >>>>Checked by AVG Free Edition.
>> >>>>Version: 7.5.516 / Virus Database: 269.19.21/1265 - Release Date:
>> >>>>2/7/2008 11:17 AM
>> >>>
>> >>>
>> >>>
>> >>>
>> >>
>> >>
>> >
>> >
>> >
>> >
>>
>>
>>
>> --
>> No virus found in this incoming message.
>> Checked by AVG Free Edition.
>> Version: 7.5.516 / Virus Database: 269.19.21/1266 - Release Date:
>> 2/8/2008
> 10:06 AM
>>
>>
>
>
>
>
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