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The selection of the correct printed circuit board material is very important when you want to develop a radio. FR-4 Material is OK at 2.45GHz only if your radio can handle significant drift over temperature.

You need to look at the environment and the intended application before you select the battery technology. The reason why Lithium -Ion batteries were developed was to solve a very specific problem with Cellular phones. Radios require a good source of power for the intended application.

Connecting many buildings wirelessly….Wifi was specifically designed for this application.

If you want longer range consider lowering the frequency, band width, data rate and increase the antenna gain, receiver sensitivity and output power.

I have a big problem about the 26MHz crystal oscillator….The only difference is crystal (crystal’s load capacitance) and the capacitors connected to the pins of crystal. Does anybody help me?

When you are first looking at developing a radio for consumer use the first thing you need to do is contact the agency that regulates the spectrum in the area you wish to sell you product.

Using multiply tranmitters on a radio system causes the receiver to have problems. It only receives a signal from one tranmitter. Why is that?

RSSI – USed as a sensor- Maybe not a good idea. RSSI is affected by interferance.

I am afraid you might be biting off more than you can chew.

Developing a product, producing and selling a product are what entrepreneur dream of….and requires a fair amount of understanding in finance, marketing, engineering and human resources.

I have a CC2500EMK (old design:Chipcon 1.0) the firmware runs perfectly well when this emk is attached with the module(performace is good) but when attach my own emk using the new CC2500EMK 062 reference design from the ti user guide the performace is really is causing concern with high PER.

Are radio modules a good or bad thing for RF engineers?

Is designing a radio today as easy as plopping down an RF module onto a board and expecting it to work, assume it will pass FCC testing? Or do we still need to consider RF testing, communication theory, conditions that promote unintentional radiation?

Does the certification needs to be done with the radio in it’s product case ? Or can it be run only on the radio board without any casing? I would say that the radio needs to be in it’s case, since that would influence the radio transmitting power?

When I try to compile the CodecEVM_OneWay_CC1110_12kHz16bits project I have an error:

I’ve heard of Dash-7 and Ipv6/6LoWPAN, but neither seems to have much penetration … yet, and I’m not clear how the capabilities compare to the proprietary or “large” offerings?

I am trying to construct a server whereby it can be able to receive information and detect the location of a particular wireless signal.

I have a product which is worn on the hand of a person. It is suppose to be able to detect the pulse rate of the particular person and if this pulse rate exceed the “critical pulse rate” set in the program, it will transmit a signal through wireless to the server. The server would then tell the location at which this signal is send from and show the information of the person.

I am developing a project where we need to track mining equipment in underground mine shafts. The problem is GPS obviously doesn’t work underground so our solution is to use small stationary transmitters embedded in the walls of the shafts and with each trackable piece of equipment carrying a receiver we record the time and ID of a transmitter.

Pinter Electronics Consultants (PinterEC) has become the wireless and radio expert on Element 14.

Is FCC compliance/certification for 2.4GHz always required?