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[Articles Home]  [Add Article]  

Beat The Heat -- Rescue Your Radios

from Richard Schmidt, K7NSW on May 26, 2014
View comments about this article!

Beat The Heat -- Rescue Your Radios

One of my daily activities (retired guy) is checking into eHam.net and looking over the stations shown in Spotlight and Shack Showcase. Over time I noticed a common thread: equipment stacked in various ways on some kind of shelving - typically wood. The equipment is usually close together with gear shoved up next to the shelf sidewalls. Of particular note is how close together everything is. Often an amplifier is crowded in with all of the rest. The shelving might or might not have an open back. Crowding of gear seems to be the usual practice. Many times the stuff is stacked three levels high.

I recently replaced all of hf my equipment with new stuff (I love you Ten-Tec) and produced my version of the wooden shelves and stacking. At the end of every operating session I wait until my gear cools and on go the dust covers. While waiting for the gear to cool I have been noticing that it seemed to be too hot for the duty cycle I was running. Inadequate heat dissipation was clearly the problem. I recalled the wise words of my first Elmer back in the early 1960s: " Heat is the number one enemy of electronic equipment". So, what to do?

Think outside my shelving. Step back and take a look through different eyes. I did so and saw two things. First, trapped heat second, two sources of that heat requiring different methods of dissipating it.

First, radiant heat coming off of the heat sinks on the back of my transceiver and power supply. Also heat from inside of those two units and my amplifier causing hot enclosures/cabinets. Radiated heat needs lots of space to dissipate.

Second, heat riding the forced air exhaust from my amplifier and the small fan that cools the heat sink fins on the back of my transceiver. The columns of air moved by those fans need lots of space to dissipate the heat they are carrying.

Goodbye wooden shelves. I took a walk-about through the shelving section of my local big box store. I found a great set of adjustable steel wire shelves for twenty bucks. Very strong and no solid surface area. My gear now almost floats in the air with lots of open space above, below, and to the sides of every unit. My amplifier sits in a wide-open space on my desktop with not much around it. Heat problem solved. Everything is now running much cooler. The pictures below tell the story. Beat the heat - rescue your radios.

Member Comments:
This article has expired. No more comments may be added.
 
Beat The Heat -- Rescue Your Radios  
by KB0XR on May 26, 2014 Mail this to a friend!
Nice and cheap. Looks unfinished but who cares?
 
RE: Beat The Heat -- Rescue Your Radios  
by F8WBD on May 26, 2014 Mail this to a friend!
Many years ago, when I had a couple of big rigs, my shelving was exactly as illustrated. Now all itty-bitty QRP kit which doesn't generate any heat. The cold cup of coffee sitting on the desk is warmer.

I am amazed by the pyramids of gear on so many operating positions.
 
Computer fans lead the way.  
by AI2IA on May 26, 2014 Mail this to a friend!
I have found that those little, very quiet computer fans operating off 12 volts DC are great for placing behind power supply and transceivers. The heat sinks on all my active gear now never even feel warm anymore. They just feel cold, even after being on for hours at a time.

Don't underestimate the power of these midget fans to move air. They do a great job, and I suggest that you try one or more of them behind you gear. They even send air underneath all the boxes with small rubber feet.
 
Beat The Heat -- Rescue Your Radios  
by K3YUB on May 26, 2014 Mail this to a friend!
Beat the Heat - Very well said and very good idea. I have wood shelving, but equipment is well spaced out with plenty of ventilation. Thank you for your post.
 
Beat The Heat -- Rescue Your Radios  
by KC6RCM on May 26, 2014 Mail this to a friend!
Looks good and it's effective too... I like it.
 
Beat The Heat -- Rescue Your Radios  
by AC2RC on May 26, 2014 Mail this to a friend!
I.ve used those shelves for a long time ,they're great. I also operate remotely, that is amp, PS in the unheated basement and operate from above .
 
Beat The Heat -- Rescue Your Radios  
by K0FL on May 26, 2014 Mail this to a friend!
Nice article and something to think about for sure. When it come to your station setup the only word that comes to mind is ugly. This is not a personal attack but an observation. The cheap white wire shelving does no justice to your fine TT equipment.
 
Beat The Heat -- Rescue Your Radios  
by KH6DC on May 26, 2014 Mail this to a friend!
I built a simple 1 level desk shelf with stuff I rarely touch like the power supply (except on-off), auto tuner, receive antenna rotor on the top shelf. The bottom I have the K3, KPA 500, P3 and the LP100A but I have at least 3 inches of space above the KPA 500 and K3 for ventilation.
 
RE: Beat The Heat -- Rescue Your Radios  
by K4AX on May 26, 2014 Mail this to a friend!
I use three different sizes of the exact same shelves. I love them, they don't look great but it makes it easier to see your rigs from any angle with plenty of light with the added benefit of cooling. I currently run my main rig out on a open desk, with the tuners, amp, power supplys, 2m/440 stuff on the wire shelves out of the way.
 
Beat The Heat -- Rescue Your Radios  
by K7ZOV on May 26, 2014 Mail this to a friend!
I have been using this rack method for about 5 yrs now. I got mine at Lowe's and it is all black. As I have done more buying, selling and trading the setup has gone from a few pieces of equipment to almost packed. I took the leveling feet off and drilled holes in the table and ran bolts uo through the table to hold the rack solid in place. Worked like a charm. Check out my page at qrz.com. I highly recommend this way of making a radio rack. It does have a lot of air flow, and routing wires is much easier. Thanks for sharing ... 73 Harry K7ZOV
 
Beat The Heat -- Rescue Your Radios  
by W5HEH on May 26, 2014 Mail this to a friend!
Thanks for sharing this much needed article , yah i even close my mini-blinds so Sun heat does not even touch my rig, (yah old Ten-Tec Argo556 QRP), stays cool . I also put a dust cover on it . Now you need to write an article on how to keep your Mobil rig from Frying in our vehicles ! hihi. Have fun, AJ W5heh


ps if guys do not like the white supports on that shelf they can just paint it ! maybe camo ? hihi.
 
RE: Beat The Heat -- Rescue Your Radios  
by K9MHZ on May 27, 2014 Mail this to a friend!
Just wondering why you're displaying your Astron, although lots of guys seem to do it and end up staring at a big, ugly power supply. Without it, you might have enough room at your operating position for your rig, linear, and antenna matcher (?)

Put that ugly Astron off to the side or below. Best station arrangement move I ever made. You might not need that big rack in front of you.

 
Beat The Heat -- Rescue Your Radios  
by RSHIRE22 on May 27, 2014 Mail this to a friend!
My rigs is on a plastic tray table eighteen inches above my power supply. A box fan blows both and me at the same time w/o ac.
 
Beat The Heat -- Rescue Your Radios  
by W0CBF on May 27, 2014 Mail this to a friend!
I like the wire rack shelves and have used them for computer equipment as well as commercial radio equipment. Now that they are being sold in most hardware stores makes that easy to buy and install. I especially like the fact that dust cannot settle on the shelves. Using wood or metal for the shelf material allows dust to settle where the dust is sucked in by the equipment. Good article. WCBF
 
Beat The Heat -- Rescue Your Radios  
by VE3TMT on May 27, 2014 Mail this to a friend!
K7ZOV,

Nice looking arrangement. I tried the metal shelves once but found you had to place the equipment just right so the feet sat right and stayed level. The slightest little movement and the equipment went off balance.

I find some of the equipment in the authors pic sitting too high for my liking. Do you have to stand up to adjust the tuner?

I prefer to build out than up.

Correct on the PC fans. They're cheap and do a great job pulling heat away from the gear. I have one on the top of the FL2100B and it barely gets warm. Going to add a second one to the back of the radio for good measure.
 
RE: Beat The Heat -- Rescue Your Radios  
by K4IA on May 27, 2014 Mail this to a friend!
Nice idea but I agree that the power supply belongs on the floor - out of the way - and where its hum is not likely to be picked up in cables. Leave it on or flip the switch with your big toe. Then move the radio to the lowest shelf so you don't get arm fatigue reaching up to twiddle the knobs. Antenna tuner and VHF rig on the middle shelf. Speakers on top.

If you're right-handed move the amp to the left and the rack to the right. Spread them out a bit and there is room for a laptop computer or a keyboard with the PC on the floor and monitor on top of the amp.

Get some wire "loom" to conceal the wires. It is a flexible tubing that is slit so you can fit all the wires in and get rid of the rat's nest look. Attach the loom to the back of the shelf and down one leg with zip ties.
 
RE: Beat The Heat -- Rescue Your Radios  
by KE7FD on May 27, 2014 Mail this to a friend!
On a previous mobile install where I had both HF and dual band units housed in a case from the hardware store (remote heads up front and main bodies at the rear of the vehicle), I employed a simple mechanical home thermostat to turn on a 12 volt fan inside the case to exchange outside air. The same thing can be done very easy behind the gear at home to turn on 12v fans or a 12v relay that could control larger fans located away from the mic/operator (think duct work or PVC). Using a thormostat would cycle the fan only after it reached the desired temperature and off otherwise (adjustable). Use some creative ways to lay it all out in a effective way, be safe in your connections and your gear should last as long as you're licensed.

Glen
KE7FD
 
RE: Beat The Heat -- Rescue Your Radios  
by AA4PB on May 27, 2014 Mail this to a friend!
A couple of heat related issues I've experienced:
1) On some radios, tilting the radio upward in order to have a direct view of the front panel can cause heat to collect on the front panel.

2) In a mobile install, black is the wrong color for any radio subjected to sunlight. My IC706, even when off, would get so hot that I couldn't hold my hand on the top cover. I repainted the case a light gray (which actually looks better in my opinion) and the radio cooled right off. The same was true for my SGC tuner - light gray makes it much cooler.

 
RE: Beat The Heat -- Rescue Your Radios  
by AC7CW on May 27, 2014 Mail this to a friend!
I would not clean up the cables. Keep them separated, if they are paralleled and close together you will get crosstalk.
 
RE: Beat The Heat -- Rescue Your Radios  
by KF4HR on May 27, 2014 Mail this to a friend!
You solved the heat issue, but it looks like the arm fatigue issue took its place. hi

I've found that arranging the equipment I use the most about 6 inches off the decktop surface puts the main gear at about eye and arm level, plus those raised 6 inches make for a nice storage area for keys and paddles.
 
Beat The Heat -- Rescue Your Radios  
by DL1MEV on May 28, 2014 Mail this to a friend!
When there is not enough space available, stacking equipment as described in the article is still the best way to minimize the heat.

Discarding and selling unnecessary items creates space. The unused spare-rig can be put into a closet.There is no more need keeping old magazines when they are available in an electronic format. So stacking may become unnecessary.

By the way: a rise of temperature of 5K-10K halves the lifetime of a semiconductor.
 
Beat The Heat -- Rescue Your Radios  
by VE3TMT on May 28, 2014 Mail this to a friend!
...and by all means keep your pets on the equipment. I see pictures of stations and the cat is sitting on the radio or on the amp. Not good having all that hair and crap all over the equipment. Yuch!

I have a shelf that runs the length of my desk that sits 5" about the desk. This puts the gear at a good viewing angle and I don't have to reach for anything. Switch boxes, tuner etc fit under the shelf but all within easy reach. The only reaching I have to do is grabbing the mic on the boom.

See my pic on QRZ.
 
Beat The Heat -- Rescue Your Radios  
by NV2A on May 28, 2014 Mail this to a friend!
If you are using full size rigs with wooden shelves, it wouldn't take a lot of work to cut a rectangle in the shelving and let the rig straddle the shelving for the same affect and would look better.

I would make my slot 12" wide by 8" deep and I'm pretty sure it would accomodate all but the micro rigs like the Icom 7000 and 706 type rigs.

Layout your square, drill a 1/2" hole at each corner and then connect the corners with a coping or jig saw.

I built my own entertainment center and put a panel in behind the equipment and mounted a large muffin fan. The difference in temperature is unreal when I have it all pumped up to watch a movie!! 500watts of audio and it sounds like you are in the movie with 200 watt sub woofer!
 
RE: Beat The Heat -- Rescue Your Radios  
by K6AER on May 28, 2014 Mail this to a friend!
This article seems to be a solution in search of a problem.

Radio equipment does not necessarily need lots of space around the unit. Speakers, keyers, audio mixing equipment use so little wattage they barely get warm. Most transceivers made today pull fresh air pull from the front edge of the transceiver and exhaust it out the rear of the radio. Again side wall construction and layout determine the airflow needed for effective cooling. If you transceiver is getting to hot you need to evaluate the radios cooling system and make improvements to the internal cooling capacity. Hanging the radio on a wire shelf may reduce the heat somewhat but the operational ergonomics is terrible.

In the case of power supplies, the Astron has poor cooling at best and the rear heat sinks cannot handle continuous duty cycles at high output. This unit needs a thematically controlled heat fan and larger heat sinks on the pass transistors. A good switch mode power supply is a much better choice for efficiency and heat reduction. Hams are about the only creatures still using analog power supplies in communication. We will get rid of a 4 year old car but will hang onto a PS design that dates back to our high school years.

Lastly we come to the amplifier. Most amplifiers have either rear heat exhaust (Alpha, QRO,ACOM, etc) or in the case of older glass tube amplifiers exhaust out the top of the cabinet such as the older Heathkits and most glass tube amplifiers. I notice the Amplifier is sitting on the table which is where it is best unless you can lift it somewhere else. Here placement is determined not by thermodynamics but by the back.

If you look at my station on QRZ.com you will see the equipment is in shelves and closely fitter together. In each case the cooling requirements were analyzed and provisions made when increase cooling is needed. The power supplies (switch mode) are separate from the station equipment. The radios have plenty of air space and in the case of the IC-7600 an additional cooling fan was added to the rear of the radio. Cooling on the main HF radio was greatly reduced with an additional low speed 3 inch muffin fan.
 
RE: Beat The Heat -- Rescue Your Radios  
by K9MHZ on May 28, 2014 Mail this to a friend!
>>>>by VE3TMT on May 28, 2014 ...and by all means keep your pets on the equipment. I see pictures of stations and the cat is sitting on the radio or on the amp. Not good having all that hair and crap all over the equipment. Yuch!<<<<

That's funny! Yeah, probably no research has been done on the insulating characteristics of cat fur and dander.


 
RE: Beat The Heat -- Rescue Your Radios  
by K4PIH on May 28, 2014 Mail this to a friend!
Speaking of fur ... I did some computer trouble shooting for an elderly lady at church. Her system would just randomly re-boot. Once I figured out that Mr. Gates waas not the issue, I took the computer apart and it was full of cat fur and I didn't see a cat. The cat had passed some months before and she had this problem for a while. Got the compressed air and blew out the furballs and no more random re-boot. I can just imagine a ball of cat or dog hair in a legal limit linear!
 
Beat The Heat -- Rescue Your Radios  
by RSHIRE22 on May 28, 2014 Mail this to a friend!
The Washington Redskins should be renamed the Washington Braindamages.

Our Congress votes to force a team name because the name hurts some peoples feelings. For the past fifty years NFL team doctors have given injured players painkillers illegally so they could continue playing leading to greater injuries.

You would think Congress would have something to say about that but no. Talk about Bizarro World we live in today. Talk about upside down priorities, aka hypocrisy, stupidity, ignorance, and phoniness.
Those are the only good things I can say about this government and our leaders. All the 'caring' they can muster is 'self interest' in disguise.
 
RE: Beat The Heat -- Rescue Your Radios  
by N5YFC on May 28, 2014 Mail this to a friend!
I don't keep that much stuff on the desk, but about
once every 3 years I take the Jupiter outside, take
the top off and blow the dust out of it. I am amazed
at how much dust builds up in it.

N5YFC
 
RE: Beat The Heat -- Rescue Your Radios  
by KC3JV on May 28, 2014 Mail this to a friend!
My solution small 12 V fans attached with small plastic wall anchors over sheet metal screws that have been inserted through the fan mounting slots. They anchors press fit into the heat sink fins. Power comes from the power supply so the fans are on while power is on to the rig. The fans a good ball bearing grade just as large as the width of the heat sink. The can be found on Ebay very inexpensivly.

Mark KC3JV
 
Beat The Heat -- Rescue Your Radios  
by KE7FD on May 29, 2014 Mail this to a friend!
I think 99% of the posts to the thread are very good and I especially enjoyed K6AERs comments. Since hes a real engineer its hard to refute his ideas (excellent photos by the way Mike). That being said the unspoken element here is the human nature of wanting to be sure. Call it overkill, attention to detail, comfort zone, (fill in the blank) Some folks just want to know theyve done all they can to have the peace of mind that comes from knowing that [in this case] ambient heat wont kill the rig. The rig might go up in flames after getting hit by lightning or spilling coffee across the finals but it sure wont be because of heat build-up. Its not a purest way of looking at things but very few of us have the book smarts (college degree) or experience (career) to know when enough is enough with regards to modern electronics so we tweak this and tweak that to make sure we feel comfortable with the task at hand. With regards to placement of gear: if the wire shelves works for Richard then good for him. It probably wouldnt work for me for a few reasons which might be different for everyone else. Folks tell me Im no taller when I stand than when Im sitting so here too body type comes into play. Im not sure if Ive seen the perfect station layout yet on eHam although for most of the pictures Ive seen, theyre likely perfect in the eyes of the ops who own them.

Still, all these comments taken as a whole can give new hams some things to think about when putting a station together.

IMHO,
Glen KE7FD
 
RE: Beat The Heat -- Rescue Your Radios  
by K9MHZ on May 29, 2014 Mail this to a friend!
Well, some folks don't seem to care as much...........

http://www.hamsexy.com/cms/?p=446

 
Beat The Heat -- Rescue Your Radios  
by M6MFX on May 29, 2014 Mail this to a friend!
You could modify your wooden shelving by drilling a number of holes, a 25mm/1" hole saw would be ideal. If have a hole saw and a drill it wont cost you a penny.



 
Beat The Heat -- Rescue Your Radios  
by KF7VXA on May 29, 2014 Mail this to a friend!
A good solution, but for me, it separates the equipment way too much.
I have shelves I've built, open in the back with some space between equipment and I have various fans bought for next to nothing off EBay that I've either put over the heat sinks of radios or that I can move around.
They all have small on/off switches. I've gone for the quietest I can find and they add little noise to the shack. I use earphones and a boom mike and my contacts cannot hear then in my audio, so for me, it's by far the best solution to keeping my equipment running cooler.
I use them in the warmer months and the room my shack is in is plenty cool in the fall, winter and spring. At those times of year, except for long key down times or digital, no fans are needed.

John KF7VXA
 
Beat The Heat -- Rescue Your Radios  
by WE8P on May 29, 2014 Mail this to a friend!
If you think that using a tabletop stack places the equipment too high, you can spread out by cutting the tubing in half to make two units - one with one shelf and one with two. (Remove the feet with and cap the ends with chair tips).

I have such a setup wedged into the corner of my cubicle at work, holding two monitors at eye level. The one shelf unit straddles the laptop docking station and the two shelf unit provides storage for keyboard and office supplies.
 
Beat The Heat -- Rescue Your Radios  
by KE6TDT on May 29, 2014 Mail this to a friend!
I prefer shelving and the appearance it depicts.

I built a shelving unit from shelving board from Home Depot and purposely did not put a backing on the shelf unit so air circulates nicely. I keep it away from the wall about 2 or 3".

Air circulation is very important.

By the way, I agree with others here and would NEVER stack my equipment.

 
Beat The Heat -- Rescue Your Radios  
by WD9FUM on May 30, 2014 Mail this to a friend!
Keep 'em cool and keep 'em clean.
 
RE: Beat The Heat -- Rescue Your Radios  
by KQ6Q on May 31, 2014 Mail this to a friend!
Great selection of wire shelving and accessories at the web site for Global Industrial Supplies. over 10 years ago I got a shelf system 6' high, 6' wide, with a solid desk countertop - lots of end and back brackets and dividers, and plastic sheets to make shelves solid when necesary, and sliding bins for under the bottom for cables, printer paper and such. my ham rig and laptop on one side near the wall with my coax switches and feed, the main family PC on the other end, with Lexmark printer/scanner, a Buffalo LANstation, router, access point - all the house tech, all accessible. Dusting around the equipment gets intersting, but it's been a good solution.
 
Beat The Heat -- Rescue Your Radios  
by KF7VXA on June 1, 2014 Mail this to a friend!
I think the two comment about drilling holes in wooden shelves is great. I've already made my comments, just an addition.
 
RE: Beat The Heat -- Rescue Your Radios  
by W3RSW on June 1, 2014 Mail this to a friend!
I don't necessarily agree with wholesale broad spaced shelving although it certainly is a decent way to dissipate heat.

Remember that equipment cabinets have depth, most rigs numerically inversely proportional to the date of manufacture. Newer rigs usually have less depth than older. Amplifiers are a separate category and good circulation for these is mandatory.

Remember also that few transceivers and amplifiers are used simultaneously.

Note also as previously mentioned that heat exhausts and sinks are toward the top rear of radios and amplifiers if not the actual rear panel. BTW Alpha amps have tube exhausts only and are located in left top rear usually. Intakes are right rear and can be fan enhanced.
For other reasons, not the least of which is cosmetic survival, I wouldn't place anything on top of an Alpha.

So if your careful about stacking and stack your most modern equipment on top of older and are also not to worried about bottom feet of newer equipment possibly marking the top of older, then by all means you can stack them fairly closely, even without shelving. Your only operating them one at a time.

For example a k3 on top of an older Drake TR-7 covers very little of the Drakes rearward natural convection vents. If operating the drake in heavy duty RTTY or AM mode then, by all means mount the fan which pulls in air from the top and exhausts it out the back. On top of the K3 is place an even shallower speaker, etc. covering none of the K3's top right rear vents.

Old tube gear may have tons of cooling vents on sides and rear with completely closed tops. If your not too worried about top,access and the old gear is little used, then by all means another speaker, etc can be placed there. Just make sure you have a good inch or better between cabs and a foot or more in the back.

Wattmeter read outs and the like can be stacked anywhere not covering vents, even wall mounted.

Be aware of what produces heat, when and how, along with manufacturer's directions for decent results. You will have a compact shack with all components beyond the basic beginner shack readily at hand.

Note also in a "u" shaped setup the front panels may be fairly closely spaced but the rears angle out wards from each other.

Understand your rigs and the three ways heat is transmitted, radiation, convection and absorption along with the time domain and heat capacityrequirements of dissipation for each.


 
Beat The Heat -- Rescue Your Radios  
by W2DI on June 3, 2014 Mail this to a friend!
I ran across the very shelf unit, for the same price. The one in the photos looks white? The one I have is chrome!
I use double side tape and fender washers for the radios and accs. to place their feet.
The shelves are adjustable and the HF rig is on the bottom shelf, just the right hight to view and adjust with my elbow on the desk.
Under the bottom shelf is the desk with no equipment, giving me plenty of writing space. Power supply and laptop are off to the sides of the shelf.
The 2M mobile rig is on the top shelf tilted down for a better view angle.
It's all very open and regardless of the thermodynamics, everything can easily be accessed, front and back.
Wonder if the thing will load up on 40?
I'll need another for a counterpoise ;-)
Joe -- W2DI
 
Beat The Heat -- Rescue Your Radios  
by KF7VXA on June 16, 2014 Mail this to a friend!
I already made a reply as to the racks, very nice, but too much for me.
I just wanted to add, when adding a fan to the output air slots of an amp or transceiver, be sure there is still positive airflow coming out of the slots around the fan installed on the outside of the amp case.
Should you use a fan that pulls more air than is coming out, you can easily pull air from the exit slots right back to the fan you put on the outside, the outside fan must have less airflow than the main fan so the proper amount of air can flow over the tubes to cool them, I'd say by 2 to 1 at least.

John
 
Beat The Heat -- Rescue Your Radios  
by WA7PRC on June 17, 2014 Mail this to a friend!
My 72" wide x 18" deep homebrew shelf sits 12" above my 36"x72" homebrew table. The back panel of the shelf unit has 2" tall gaps at top and bottom.

This design allows air to easily circulate, and cables to pass. My SB-220 amplifier sits under the shelf and has had no issues with cooling.

vy 73,
Bryan WA7PRC
 
Beat The Heat -- Rescue Your Radios  
by W8LV on June 23, 2014 Mail this to a friend!
Thanks for the great article...I use plastic "open" utility shelves, but am rethinking the idea of metal shelves instead, based on this... On the plastic ones, I think the dimensions were (in goofy feet) 3 feet wide, five feet tall, maybe 20 inches deep. These are the type that you put together with no tools, plastic tubes hold the whole works together. Of course, five feet is too tall! So I cut the plastic tubes at about eighteen inches, and now that's a good dimension for shelves to place equipment...the gear fits nicely on the desk, "breathes" well, and makes it easy to see and operate equipment (Arrangement Hints: place receiver on lowest shelf, makes it easy to tune while resting your hand on the table, autotuner/SWR bargraph goes at eye level (LOVE that LDG!)/ant switch, and if you have one of the new lightweight switching power supplies, it can go on the TOP shelf, no problem! (Au Contrare to what I read, I find my switcher is very quiet, actually quieter than the "VHB" supply that it replaced.) BUT, now I am thinking metal is safer....

FINALLY, if your wife does any of the cleaning in the shack, (YOUR family "division of labour" may vary...CAVEAT EMPTOR) better let her know not to use ANY chemicals on the displays...
 
Beat The Heat -- Rescue Your Radios  
by CQCQDX on June 28, 2014 Mail this to a friend!
Good Information!
Extra Cooling always helps...
-73-
 
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