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Author Topic: Mods & repairs to stop excessive heat in radio  (Read 605 times)
ROLLINGTHUNDER
Member

Posts: 5




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« on: October 01, 2007, 01:37:19 AM »

What exactly can I do to:

   1) Cherokee AH-100 AM/SSB handheld CB walki-talki &
   2) Ranger Freedom One TR-696FD1 AM/SSB CB mobile
      radio,
 
to stop excessive heat colecting at and emitting from:

   1) The speaker,
   2) Mic switch on AH-100,
   3) Mic cord connection point on the TR-696FD1,
   3) Antenna connection point (SO-239) on the
      TR-696FD1.

Note that these comms. radios are (11) Meter Radios.
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KB1LKR
Member

Posts: 1898




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« Reply #1 on: October 01, 2007, 05:59:55 AM »

More open space around the radios (if possible) and/or a small muffin fan (or fans) to keep some air moving about them. Look at www.mouser.com, www.digikey.com or even the local Radio Shack.

Just curious, why do you want to mod the VX-170? I'd leave it well enough alone, but that's just me. Other things to look for for it though would be a Comet SMA24, or it's clone the Pryme RD-98 17" antenna, or a 15" Diamond SRH77CA antenna.
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K7KBN
Member

Posts: 2825




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« Reply #2 on: October 01, 2007, 11:45:17 AM »

I was going to suggest keeping transmissions short, but if you have that much heat built up, I'm guessing you've modified these radios.  So modify them to include some means of cooling the interiors.
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73
Pat K7KBN
CWO4 USNR Ret.
W3LK
Member

Posts: 5639




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« Reply #3 on: October 01, 2007, 12:55:41 PM »

I have to agree with KBN.

I have never seen unmodified CB radios overheat - or even get particularly warm, even on long transmissions.

73,

Lon - W3LK
Naugatuck, Connecticut
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A smoking section in a restaurant makes as much sense as a peeing section in a swimming pool.
N3OX
Member

Posts: 8847


WWW

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« Reply #4 on: October 02, 2007, 02:33:39 PM »

They get hot if the antenna SWR is bad sometimes.
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73,
Dan
http://www.n3ox.net

Monkey/silicon cyborg, beeping at rocks since 1995.
K7KBN
Member

Posts: 2825




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« Reply #5 on: October 02, 2007, 04:04:11 PM »

SWR?  CB antennas don't have SWR.  It's SWRS!
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73
Pat K7KBN
CWO4 USNR Ret.
W3LK
Member

Posts: 5639




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« Reply #6 on: October 02, 2007, 04:11:41 PM »

It would appear someone is deleting posts to this thread.

73,

Lon - W3LK
Naugatuck, Connecticut
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W3LK
Member

Posts: 5639




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« Reply #7 on: October 02, 2007, 04:13:10 PM »

My mistake - wrong thread.

73,

Lon - W3LK
Naugatuck, Connecticut
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A smoking section in a restaurant makes as much sense as a peeing section in a swimming pool.
BIGGUY
Member

Posts: 4




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« Reply #8 on: October 21, 2007, 03:35:53 PM »

What are the radios putting out on a watt meter?
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WA9SVD
Member

Posts: 2198




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« Reply #9 on: October 28, 2007, 05:19:10 PM »

Are the radios in an enclosed area?  If so, you will have to provide a fan for ventilation.  Otherwise, they shouldn't be overheating, unless they were modified.  If that's the case, you're stuck with the overheating and a possible Rileygram.
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