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Author Topic: FT-2000D - Thought on replacing YF-122c filter with one of wider bandwidth.  (Read 2404 times)
N0PQK
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« on: January 21, 2013, 07:18:31 PM »

I have read about the NS filter modification for the Yaesu FT-2000. Is it possible, and is it advisable to buy an INRAD filter that would fit into the YF-122C slot with a value of 2.4 Khz?

Would this give me the same or nearly the same outcome as performing the NS roofing filter mod?
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KG6YV
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« Reply #1 on: January 23, 2013, 09:14:33 AM »

No.

Replacing a filter in the IF will not eliminate the radio seeing out of pass band signals at the first mixer.  This is where IMD occurs.  To keep off frequency signals completely out of the receiver you need to filter them out before the IF at the first mixer.  That is what a roofing filter does.  IMHO the NS filter is the way to go.  I have had one in my FT-2000D for two years and it works.  It even makes the other controls like the VRF and noise blanker more effective because the DSP doesn't see as much garbage with a filter right at the head-end of the receiver circuit. 

I hope this helps,

Greg
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N0PQK
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« Reply #2 on: January 23, 2013, 03:20:52 PM »

Greg,

One more question if you don't mind. How would you compare the FT-2000 with the NS filter to the FT-5000. Are they similar in performance?

I am looking at making a purchase of one of these two radios and want to get as much information as possible.

Thanks
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KG6YV
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« Reply #3 on: January 23, 2013, 04:48:54 PM »

The FT-2000 with NS $300 filter is an excellent radio.  The receiver is almost on par with the 5000 specs. 
However, I have two friends who owned the 2000 and bought 5000's.  The Noise blanker works better on the 5000 and so does the DNR according to them.  But they didn't have the NS filter in their 2000's so I dunno what to think.  The 5000 uses more current technology inside and will be supported by Yaesu long after they drop support for the 2000. 

If I had the bucks to spend on a 5000 I would look at it and find either a store or another ham with one
within driving distance to check it out.  I know Yaesu learned a lot from the 2000/9000 radios and put their
lessons learned into the 5000. 

FYI

Greg
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N0PQK
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« Reply #4 on: May 21, 2013, 10:55:14 PM »

After a bunch of research I decided to buy the Yaesu FT-5000 MP.

Thanks for the comments.
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N4ATS
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« Reply #5 on: May 22, 2013, 05:39:03 AM »

Think about the Kenwood TS-990 , I believe the receiver in it is the best of best and is close to or better than the TS-870SAT. I never liked Yaesu because of noisy front ends , I have had several including the 5000 and went back to Kenwood
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