sds100 heat

Joined
Jul 18, 2014
Messages
8,884
Location
PA
#2
Only time will tell. The chips on the mainboard appear to be heat sinked to the large metal shield covering a lot of the board, so Uniden seems to have considered the heat issue. No problems so far though, even when running the SDS100 in a hot vehicle.
 
Joined
Sep 8, 2006
Messages
2,552
Location
Stockholm, Sweden
#3
Jon, you had the SDS100 disassembled, and perhaps also will crack open some in the future. Then take a look at the el-lyt capacitors for a temperature marking. That will tell if Uniden have spent the extra money to put high temperature components in the SDS100 or if they use the standard, less expensive alternative that will have a shorter life span.

/Ubbe
 

KE5MC

Member
Premium Subscriber
Joined
Dec 19, 2002
Messages
704
Location
Lewisville, TX
#7
I took photos while I had it apart:
https://1drv.ms/f/s!ApJIS-l4xqPtgvQQbjn2uujFCymvKw

I don't know if you can read the markings you're referring to, though.
I was interested in the construction of the selector knob. My knob wobbled on the shaft to the point pushing down to enable volume adjust required much force. I pushed at right angle to the knob to reduce wobble. I was concerned it was a bent shaft. I'm now suspecting knob was canted when installed.

You pictures show what I believe to be robust construction.

Great pictures! Thanks!!!

Mike
 

AvidHiker

Member
Premium Subscriber
Joined
Jan 6, 2018
Messages
128
Location
Northern NJ
#8
The SDS's knob feels far more solid than the one on my 436, which has a lot of play in it.

So, it gets warm, but is it hot enough to warrant high temp-rated electrolytics? I suspect Uniden didn't think so.
 

rbrtklamp2

Member
Premium Subscriber
Joined
Dec 8, 2005
Messages
798
Location
Dupage County, Illinois
#10
Look at the photos he put a internal GPS Unit in his SDS100. Jon is very talented when it comes to these scanners. He never ceases to amaze me with his modifications :).

Sent from my SM-N910V using Tapatalk
 

jeffhochberg

Member
Premium Subscriber
Joined
Apr 27, 2011
Messages
84
#11
Ok cool! I knew he did some other mods. I just wasn’t sure which mod you were pointing out.


Sent from my iPhone using Tapatalk Pro
 
Joined
Oct 30, 2016
Messages
7
#12
heat

my sds100 gets very Hot on top and antenna connector.
I have the adapter on. anyone else ? upper Body warm but connector area hot
 

maus92

Member
Premium Subscriber
Joined
Jun 23, 2004
Messages
2,702
Location
Annapolis
#14
My entire SDS100 is warm to the touch, but more so on the top half.
The display puts out a lot of heat if you keep it on full time while on external power (like me.) And the SDR tuner and associated CPUs generate more heat than previous scanners. For me, the display is the warmest part / area of the radio, followed by the upper rear / antenna connector. The radio is noticeably warm, but not as warm as my notebook computer, LCD TV, stereo receiver, etc. Devices that consume *a lot* of power will need to dissipate a proportionally greater amount of heat - no getting around physics.
 

NWI_Scanner_Guy

Member
Premium Subscriber
Joined
Jan 23, 2008
Messages
2,115
Location
Hammond, IN
#15
I for one welcome the warmth of the radio. I suffer from diabetic neuropathy (nerve damage) in my hands, thus to me, they always feel cold, no matter what the season is. Now I have a handy "hand warmer" whenever I need to warm up the hands. Yeah, I'm weird like that. LOL!! :D




:)
 
Joined
Jul 18, 2016
Messages
350
Location
Bothell, WA
#16
My entire SDS100 is warm to the touch, but more so on the top half.
Yep my top half gets really warm when I'm doing NXDN scanning of a local trunk system. There wasn't much voice traffic but it was shockingly warm after about 30 minutes of idle scanning.

Looks like they didn't do much for heat dissipation inside the case. Perhaps a large, thin heat sink would have been a good idea..?
 

buddrousa

Member
Premium Subscriber
Joined
Jan 5, 2003
Messages
4,968
Location
NW Tenn
#17
As posted here many times the scanner uses over 2 times the power of a 436 BTW my cellphone after 5 minutes of talking or surfing gets as hot as my SDS100
 

maus92

Member
Premium Subscriber
Joined
Jun 23, 2004
Messages
2,702
Location
Annapolis
#19
Yep my top half gets really warm when I'm doing NXDN scanning of a local trunk system. There wasn't much voice traffic but it was shockingly warm after about 30 minutes of idle scanning.

Looks like they didn't do much for heat dissipation inside the case. Perhaps a large, thin heat sink would have been a good idea..?
The fact that you are feeling heat is a good thing. Heat generated by the circuitry needs to be conducted away from the radio and wasted to ambient air.
 
Joined
Jun 9, 2013
Messages
256
Location
New Britain, CT
#20
I use the BNC adapter with the Remtronix 800 antenna and it seems that most of the heat is drawn up and out of the scanner into the adapter and steel part of the antenna as that gets very warm to hot.
 
Top