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TCXO Filter

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  #1  
Old 04-10-2012, 11:59 PM
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Default TCXO Filter


What does this filter do?
https://www.hamcity.com/store/pc/vie...idproduct=1210
Would it be a wise to pair with the 500Hz filter?
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Old 04-11-2012, 12:18 AM
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In simple terms:

It keeps your transmit/receive frequency more stable and less drifty. With the 480, you really don't need it for SSB use. It would be nice to have. If you are gonna run digital modes then it is very nice to have.

The 500Hz filter is for CW. That's a good price on the TXCO.

If you're gonna buy or own the 480 and have the cash... Go ahead and fill all the available slots. The high stability oscillator makes a big difference in rigs like the 706 and such, especially when moving up in frequency.

Last edited by m42duster; 04-11-2012 at 12:33 AM.

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Old 04-11-2012, 12:23 AM
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"High stability temperature compensated crystal oscillator" is a replacement, high quality reference oscillator. This makes the radio it is specifically designed for to have far less drift. Thermally controlling the crystal keeps its frequency within a tighter tolerance than any radio that doesn't have one installed.
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Old 04-11-2012, 12:36 AM
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You have to solder all of those options in your rig. The TXCO needs an alignment after installing it, but is not to difficult. I think it comes with a little tool for the task. That 1.8 kHz SSB filter would be nice also.

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Old 04-11-2012, 12:51 AM
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Dunno about choosing a 1.8kc SSB filter though. That is a bit narrow. They don't make them for the Kenwood TS480; think the DSP controls the width - if I recall correctly. My Kenwood TS-2000 can go 3.3 wide if I mess with the DSP filter controls. It can be adjusted to be narrow too . . .
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Old 04-11-2012, 01:05 AM
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The 480 has two IF slots. The 1.8 is a factory option. There may be an aftermarket option.

Getting narrow and tight does have advantages at times.

Kenwood CW choices are 500Hz and 270Hz.

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Old 04-11-2012, 01:31 AM
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I have used a friends 480 during field days and a few contests. I noticed when the band is very crowded the 480 needed the narrow SSB filter especially since it's AF.

I really liked the rig on CW. The narrow filter, tweaking the IF shift and finishing it off with DSP made for some nice work.
He also runs the remote software and does some digital work at home, but I ain't into that so can't comment. I've seen more old school dudes gravitate torwards it since it is pretty easy to operate. I wish it had IF DSP, but hey, it's a nice rig with decent features (even if you have to fidget with it some) and is not expensive.

Last edited by m42duster; 04-11-2012 at 01:46 AM.

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Old 04-11-2012, 03:35 AM
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Quote:
Originally Posted by m42duster View Post
The 480 has two IF slots. The 1.8 is a factory option. There may be an aftermarket option.

Getting narrow and tight does have advantages at times.

Kenwood CW choices are 500Hz and 270Hz.

You are right about the 1.8 KHz being a good option. It really helps when there is a lot of QRM nearby as well as when the signal is weak and near the noise floor.Fidelity is not the best but hey, it's two way voice comms not broadcasting as some people (unfortunately more and more it seems) would like to think.
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