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Author Topic: Question about Kenwood Radios and GOOP  (Read 1900 times)
KA0KVW
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« on: April 11, 2014, 09:47:18 AM »

Hi,

I have been a Ham for a long time, but I have been out of the hobby for 25+ years.  Just now trying to get back into it.   I have been looking for a decent HF rig, to replace my existing rig, which is not working.  Anyway, I have been keeping an eye on some Kenwoods (430, 440, 450 and a few others) on various selling sites.   I was trying to do some research on some of these models, when I came across some some articles that talk about this GOOP problem, inside the radios.  And I see how it causes a lot of issues and costly repairs.

So, my question is:   Does this happen to all Kenwood radios?  Only certain models?  Or, only certain years they were built?  Just trying to decide if I should shy away from Kenwood, or only certain models, etc..

Thanks for any comments.
Joe
KA0KVW
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W8JX
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« Reply #1 on: April 11, 2014, 10:00:21 AM »

They are talking about sealant/coating applied to some components on a TS440. It can be a problem child.
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KA0KVW
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« Reply #2 on: April 11, 2014, 12:46:03 PM »

Thanks for the input.
Do you know if this was limited to ONLY the 440?  I thought I have seen articles on other models, talking about the same issue.

And, are all 440's going to have this same problem?   Or the likely hood of it happening?

Thanks
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W8JX
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« Reply #3 on: April 11, 2014, 01:38:32 PM »

The problem in question is unique to 440 only. All 440's suffer from it at one time or another. Many have already been repaired and had the "goo" removed. The 430 is a 30+ year old design and 440 close to 30. The 450 dates for about 20 years ago in design and newer 570 is about 15 years old and is still a solid rig today. There is also the TS140 which is a bit newer than 440 and was in production for about 15 years and is a VERY rugged rig. I have owned 3 of them. The first one I bought about 26 years ago and sold it 15 years ago to a friend and it is still ticking. I picked up my 3rd on at Hamvention fleamarket about 3 years ago on a deal too good to pass up. I use it mobile.   
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KS2G
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« Reply #4 on: April 11, 2014, 05:17:29 PM »

I have been keeping an eye on some Kenwoods (430, 440, 450 and a few others)...

If your budget can stand the somewhat higher cost, a TS-570D(G) or TS-570S(G) if you desire 6-Meters) would be a far better choice than any of the 400-series rigs.

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AF5CC
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« Reply #5 on: April 11, 2014, 10:03:37 PM »

I have been keeping an eye on some Kenwoods (430, 440, 450 and a few others)...

If your budget can stand the somewhat higher cost, a TS-570D(G) or TS-570S(G) if you desire 6-Meters) would be a far better choice than any of the 400-series rigs.



The TS570 has more creature comforts, but the TS450 and TS690 have a better receiver, much better filter setup and a far better internal tuner.

John AF5CC
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N7BMW
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« Reply #6 on: April 12, 2014, 08:51:53 AM »

I have been keeping an eye on some Kenwoods (430, 440, 450 and a few others)...

If your budget can stand the somewhat higher cost, a TS-570D(G) or TS-570S(G) if you desire 6-Meters) would be a far better choice than any of the 400-series rigs.



The TS570 has more creature comforts, but the TS450 and TS690 have a better receiver, much better filter setup and a far better internal tuner.

John AF5CC

John is right - The 450 has a much nicer receiver than the 570.  I have owned both, still have the 570 and miss the 450's notch filter.
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W8JX
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« Reply #7 on: April 12, 2014, 06:13:19 PM »

I have been keeping an eye on some Kenwoods (430, 440, 450 and a few others)...

If your budget can stand the somewhat higher cost, a TS-570D(G) or TS-570S(G) if you desire 6-Meters) would be a far better choice than any of the 400-series rigs.



The TS570 has more creature comforts, but the TS450 and TS690 have a better receiver, much better filter setup and a far better internal tuner.

John AF5CC

John is right - The 450 has a much nicer receiver than the 570.  I have owned both, still have the 570 and miss the 450's notch filter.

I owned a 450 for a bit and traded/sold it for a 570. I like auto notch better on 570, 570 has better noise reduction and as far as tuner while the 450 will handle a bigger mismatch the 570 tunes far quicker. It supports 2 antennas too. 570 is more digital friendly too. Also the display is visible even in daylight. The only plus I would give 450 is it supports both a CW and SSB filter at same time.
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KA0KVW
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« Reply #8 on: April 14, 2014, 03:01:46 PM »

Ok, Thanks everyone for the info / input.  Glad to know this "goo" issue, only effects the 440s.   And good info on the other models.   I will need to keep my eyes open for some of the newer models.  Thanks again.

73
Joe
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