• To anyone looking to acquire commercial radio programming software:

    Please do not make requests for copies of radio programming software which is sold (or was sold) by the manufacturer for any monetary value. All requests will be deleted and a forum infraction issued. Making a request such as this is attempting to engage in software piracy and this forum cannot be involved or associated with this activity. The same goes for any private transaction via Private Message. Even if you attempt to engage in this activity in PM's we will still enforce the forum rules. Your PM's are not private and the administration has the right to read them if there's a hint to criminal activity.

    If you are having trouble legally obtaining software please state so. We do not want any hurt feelings when your vague post is mistaken for a free request. It is YOUR responsibility to properly word your request.

    To obtain Motorola software see the Sticky in the Motorola forum.

    The various other vendors often permit their dealers to sell the software online (i.e., Kenwood). Please use Google or some other search engine to find a dealer that sells the software. Typically each series or individual radio requires its own software package. Often the Kenwood software is less than $100 so don't be a cheapskate; just purchase it.

    For M/A Com/Harris/GE, etc: there are two software packages that program all current and past radios. One package is for conventional programming and the other for trunked programming. The trunked package is in upwards of $2,500. The conventional package is more reasonable though is still several hundred dollars. The benefit is you do not need multiple versions for each radio (unlike Motorola).

    This is a large and very visible forum. We cannot jeopardize the ability to provide the RadioReference services by allowing this activity to occur. Please respect this.

Battery consumption observations

Status
Not open for further replies.

mitaux8030

Member
Joined
Nov 21, 2005
Messages
266
Location
Home
Just out of interest, I measured the battery consumption under various receiving & transmitting conditions and found that:

Consumption increases approximately 6% when receiving a digital signal, versus an analogue one of similar transmitted volume;
However reception of an analogue signal when a digital conventional channel is selected has 110% more battery consumption than if the analogue signal were received on an analogue conventional channel;
Scanning increases consumption by approximately 5%, as does dropping into CC scan or WA scan
Consumption increases approximately 6% when static on an EDACS control channel, but scanning groups does not increase consumption at all.

However one thing I did find intriguing was that occasionally when either static or scanning groups in EDACS, the consumption sometimes *dropped* by 10% compared to sitting static on a conventional channel. I couldn't reliably reproduce this effect, and it leads me to believe that either there is some form of digital TDM 'sleep' mode under EDACS, or that certain parts of the circuitry are shut down by a bug in the firmware of the test unit... and this observation may go partly toward explaining why occasional (empirical estimate of 1-3% depending on site configuration) entire transmissions are missed - not just late entry, but an entire transmission.

For transmitting, I note that the power control loop is very fast acting; even changes in the return loss of the antenna due to changing proximity of the user's hand / head etc are instantaneously compensated for.
 
Joined
May 13, 2003
Messages
173
Location
Texas
I'm assuming you're looking at a P7100, LPE or 700P radio yes?

The core of the radio has hardware to decode EDACS control channel data, so in EDACS mode the radio shuts down the DSP - this is what gives you the power savings. Group scan in EDACS doesn't move the receive frequency at all (unlike conventional scanning which moves from freq to freq) so you'd hope that group scan didn't "cost" any battery life. Once the radio has to move the receiver, then the battery drain starts to tick up.

As an aside, you'll probably find that ProScan ticks the current draw about 5% up when it is running....
 
Status
Not open for further replies.
Top