On Tue, Jul 9, 2013 at 2:52 AM, Herbert Graf wrote: > On Tue, 2013-07-09 at 02:32 +0530, Manu Abraham wrote: >> Bad hardware ? ie overheated radio on the router ? >> >> Regards, >> >> Manu > > I discounted bad hardware since the thing works so well everywhere else > we try it. > > But that said, everywhere else has tended to be in more densely > populated areas, so the modem would be transmitting at MUCH lower signal > powers. It might explain things quite well, didn't consider that > possibility. It would also potentially explain why the problem is > getting worse, my experience is heat related issues get worse over time > till total failure occurs. > > Next time I'm up I'll have an alternate piece of hardware I can try with > the hub's SIM (haven't decided which one yet) to discount the hardware > from the picture. Some of the hardware radios do get burned out with such prolonged use. Seen some issues with WLAN hardware trying to cling on to a weak signal. Initially the WLAN hardware would be behaving quite well and nice, but performance somehow drops over periods of time with prolonged usage. Many years back, after hearing some complaints such as signal deterioratio= n over prolonged usage with WLAN devices. when faced with a similar situation= , eventually opened up the box, which made me realize that heat was indeed the culprit, since the PCB around the RF device looked heated up. After seeing such an incident, I had kept an eye open for DVB tuners as wel= l. Such as Satellite and Terrestrial ones. Some of the older tuners did really get heated up. But for the newer tuners and on, the chipset manufacturers really do advice that pad on which the die is laid out be soldered on to th= e PCB, or thermal relief vias be laid out, depending upon the dissipation. With the newer DVB-S2 demodulators, I am seeing the demodulators not only being soldered, but also a large drop of solder beneath the pad for better dissipation. Best Regards, Manu --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .