Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

donate to eham
   Home   Help Search  
Pages: [1] 2 Next   Go Down
  Print  
Author Topic: TS-480 HX Installation  (Read 14177 times)
NT6U
Member

Posts: 80




Ignore
« on: July 23, 2016, 01:09:14 PM »

Does it make any difference to the Kennwood TS 480 HX main unit when installed right side up or upside down.  laying flat?  There is a top and bottom.
Is heat dissipation effected?
I have mounted it in a 2016 Tacoma 4x4, access cab, on the floor on the transmission well ridge, behind front seats.  No back seats in installed. 
Thanks
Logged
K0BG
Member

Posts: 10248


WWW

Ignore
« Reply #1 on: July 23, 2016, 01:46:11 PM »

It shouldn't as long as it has circulation all around the chassis.
Logged

NT6U
Member

Posts: 80




Ignore
« Reply #2 on: July 23, 2016, 06:12:01 PM »

Thank you.
I also appreciate your website.
Logged
W8JX
Member

Posts: 13268




Ignore
« Reply #3 on: July 27, 2016, 05:47:07 AM »

It shouldn't as long as it has circulation all around the chassis.

I disagree. Bad advise because K0BG does not always think things thru as usual. This is a 200 watt rig in a car that can get warm at times so you want best possible cooling. This rig has a natural flow path thru it and uses fans to augment it. That path is drawing air thru front and bottom over main circuitry and then out over finals and out back. I ideally it would be best to installing it vertically face down as this is the flow path of fan cooling and it would would aid cooling when fans are off and assist its cooling quicker when power is off. (heat rises and it would use normal path) Second choice would be to mount it flat top side up. To mount it flat upside down places heat sink below rig and would tend to heat circuit up above it from convection as heat rises. Mounting it vertically fan down would be last choice choice because this would not only reduce cooling efficiency (because heat tends to rise) and when fan is off heat flow path would reverse and heat from heat-sink would rise into main circuitry in rig and heat it more than normal and this would result in larger temp swing there as fan cycles on and off. Also, air expands as it heat so air displaces a greater volume when heated and exit holes by fan are bigger than entrance surface area to assist flow. When flow it reverse, the expanded heated air flow is choked by smaller entrance holes now being used as exits.
« Last Edit: July 27, 2016, 06:47:56 AM by W8JX » Logged

--------------------------------------
Ham since 1969....  Old School 20wpm REAL Extra Class..
K0BG
Member

Posts: 10248


WWW

Ignore
« Reply #4 on: July 27, 2016, 07:50:50 AM »

Well, the fire is calling the kettle black. The manual say not to mount the transceiver vertically! I wonder why?
Logged

W8JX
Member

Posts: 13268




Ignore
« Reply #5 on: July 27, 2016, 08:06:57 AM »

Well, the fire is calling the kettle black. The manual say not to mount the transceiver vertically! I wonder why?

I own a 480 do you??? I have also had mine apart to study its design and add accessories to it have you?  I suspect recommendation is because someone would mount it vertically face up, which you do not do for reasons I mentioned and you must of missed.  So, rather than try to confuse users, like you,  between which way a vertical mount is okay they do not recommend it at all because mounted vertically face up would reduce cooling.

BTW how are your 3/4 wave 440 verticals doing that you said would work great when they do not?
Logged

--------------------------------------
Ham since 1969....  Old School 20wpm REAL Extra Class..
AG5BC
Member

Posts: 108




Ignore
« Reply #6 on: July 27, 2016, 09:48:20 AM »

I agree with K0BG. Mounting it vertically gives them a far better chance of shaking something apart in a mobile installation, especially with the centrally located mounting bracket and the large mass of the radio. Mounting it pointed down (or up) would be worse than across because the bracket makes a great pivot point for shaking the rig.

Kenwood has done the thermal modeling as well. If they say to mount it flat, it's probably safe to say that they don't think any perceived cooling advantages that come from vertical mounting outweigh the mechanical disadvantages.

And before you retort about all of your TS-480 experience, you should know that I own a TS-480SAT, which has internal relays for its tuner that probably don't like extra movement, either.

I think that I'd follow the manufacturer's advice on this one - unless, of course, you've managed to design and manufacture your own HF rig and successfully market it without our knowledge. If you have, please let us know - people might like to hear about that.


Brian
AG5BC
Logged
K0BG
Member

Posts: 10248


WWW

Ignore
« Reply #7 on: July 27, 2016, 11:30:50 AM »

I have owned a TS-480Hx, and used it long enough to learn more about it than you apparently have, John.

In any case, it would serve you better not to be so abrasive and indigent.
Logged

W8JX
Member

Posts: 13268




Ignore
« Reply #8 on: July 27, 2016, 04:17:50 PM »

I have owned a TS-480Hx, and used it long enough to learn more about it than you apparently have, John.

Apparently not because you do not because you did not even know how to mount it.

In any case, it would serve you better not to be so abrasive and indigent.

When you stop giving BS answers... (remember first you said any position is fine then you changed because YOU DID NOT know without google) I have read your posts and auto makers have it all wrong and you are right huh. Just like 3/4 wave vertical should work great on 440 when they suck worse than a Jpole. And suddenly a expert on electric cars too but do not own them. My Volt we have owned for two years NEVER got your memo that it was supposed to be noisy.

Logged

--------------------------------------
Ham since 1969....  Old School 20wpm REAL Extra Class..
KK4YDR
Member

Posts: 673




Ignore
« Reply #9 on: July 28, 2016, 01:08:34 AM »

Meanwhile at the DNC......
Logged
KK4CHM
Member

Posts: 13




Ignore
« Reply #10 on: July 28, 2016, 04:38:04 AM »

More often than not, when I peruse the mobile forum here looking for ideas and such, I see the two of you bickering back and forth.  It's almost as if you two are vying for the top spot at eHam as being the resident expert and gurus on everything.  Maybe you are, maybe you are not, but it would serve the both of you AND the community well if you'd just grow up, get together and try to treat each other with a bit more respect.  You've both grown tiresome........


Logged
N4UM
Member

Posts: 624




Ignore
« Reply #11 on: July 28, 2016, 07:26:11 AM »

Enough with  the ad hominums(sp?) already.  This isn't an election .
Logged
AC4RD
Member

Posts: 1485




Ignore
« Reply #12 on: August 01, 2016, 05:08:54 PM »

I also appreciate your website.

Darned near everybody does.  Alan's website is a great resource and a remarkable public service on the part of the author.  :-)    You know what happened when the first telegraph line was installed between two points?  Ten minutes after communications were established, the first flame war started.  :-)

I'm glad I saw this, though: I've had my 480-sat installed vertically (on one side) for a year or so now.  Maybe I better rearrange things.  :-)
Logged
NT6U
Member

Posts: 80




Ignore
« Reply #13 on: September 11, 2016, 11:18:32 AM »

What's the final consensus please, getting back to my original question. 480 is mounted flat.  Is it going to hurt it being mounted flat but bottom side up?
Thank you
Logged
W8JX
Member

Posts: 13268




Ignore
« Reply #14 on: September 11, 2016, 02:43:03 PM »

What's the final consensus please, getting back to my original question. 480 is mounted flat.  Is it going to hurt it being mounted flat but bottom side up?
Thank you

I just looked my 480 over and as I said well up thread contrary to K0BG "thoughts" on it.  The "best" way to mount it would be vertically front down as physics would assist cooling as heat would rise on same path in same direction as when fan is active even without fan running (though as a lower rate). Next best is flat top up but NOT on a flat surface as you want air under it as it has vent hole top and bottom that draw air in when cooling and you do not want to block them. That being said I would not mount it upside down on floor. Rig is designed for convention and forced air cooling and inverting it upset the designed air flow via convection. If you want to mount it flat mount it top side up above floor. Further note that optional MB 480 bracket that bolts to rig and provides place to mount face plate in front of rig and provides a side carry handle has holes in bottom of bracket that covers rig for air flow. You do not want to block any of these holes especially on a HX as you want maximum airflow through unit.
Logged

--------------------------------------
Ham since 1969....  Old School 20wpm REAL Extra Class..
Pages: [1] 2 Next   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!