MicroP25RX

[pcman67]

@pcman67 during my drive testing, the MicroP25RX is powered by my car's usb port. Audio to my car's aux in.

A future project: I am looking at a personal design using something like an IWALK phone charger --> like this size.

@goldmyne99, I really like that IWALK charger and it has a nice battery capacity. Thank you! It's fun to ponder all of the possibilities.... I appreciate your input on this!

 

[btt]

ACRR spec in the manual. I'm guessing this is adjacent channel rejection? So a signal 12.5 kHz away would be attenuated by 49 dB? Or am I completely off in my thinking?

Thanks. I will update that in the user manual to add conditions. This measurement was with a low-level signal of -108 dBm on the desired receive frequency.

Adjacent Channel Rejection [102.CAAA][ 603]: The adjacent channel rejection
is the ratio of the level of an unwanted input signal to the reference sensitivity.
The unwanted signal is of an amplitude that causes the BER (or SINAD for
analog) produced by a wanted signal 3 dB in excess of the reference sensitivity
to be reduced to the standard BER. The analog adjacent channel rejection is a
measure of the rejection of an unwanted signal that has an analog modulation.
The digital adjacent channel rejection is a measure of rejection of an unwanted
signal that has a digital modulation.
Cross analog to digital or digital to analog, necessitates that the adjacent channel
be modulated with its appropriate standard Interference Test Pattern modulation
and that the test receiver use its reference sensitivity method.
Because it is a ratio is is commonly referred to as the Adjacent Channel
Rejection Ratio (ACRR) as well.

 

[relicwr]

The Wio is fun to play with. I was trying to turn it into a wifi analyzer last night but i was so tired i didnt get that done. the jumping game got addicting too.

 

[KevinC]

When I ordered mine on Saturday afternoon it showed 3-4 days shipping time, now it shows 7 days. Does that put me back in the 7 day period or am I still 3-4?

 

[btt]

When I ordered mine on Saturday afternoon it showed 3-4 days shipping time, now it shows 7 days. Does that put me back in the 7 day period or am I still 3-4?

Good question. I was going to update everyone later today. Short answer, yours will ship in the 3-4 day time period. You were one of the first to purchase. I'm going to get as many of them out in that time frame as I can. The builds are going good. No issues. It is taking me longer to build than I anticipated. I will be working late and starting early until everyone's order is shipped.

The next batch of enclosures has been manufactured and should ship today.

 

[btt]

The first shipment went out today. Note that the firmware was updated on the web site for both the MicroP25RX 1114-05 and the Wio display 1114-02. The updates were tested well. These are the versions it is shipping with. I will continue building tonight and get another shipment out tomorrow afternoon.

 

[dcr_inc]

Todd,
Don't kill yourself building and shipping.. We can all wait a little longer for delivery..

 

[KevinC]

Todd,
Don't kill yourself building and shipping.. We can all wait a little longer for delivery..

Seriously????

can you start a waiting list or pre payment site?

Impatiently waiting !!!!

When can we pay you??.. Impatiently waiting !!!

P.S. any progress for 2 tone decode?

 

[btt]

The builds are coming along nicely. If I had not worked on firmware Saturday and Sunday, I would have been able to deliver them all within 3-4 days of Saturday afternoon. The audio improvements for the firmware update were definitely worth the sidetrack. You guys are going to love this little receiver. It is still early here and I already have almost as many assembled from last night and this morning as shipped yesterday. Looking at tracking, the first receivers should start showing up in some mailboxes on Friday. Many that are shipped later today should arrive by Saturday. I think there is a very good chance I will be able to ship the remainder by the end of tomorrow. It is more soldering than I was thinking it was. The calibrations are good. No issues. I'm very happy with how it is going. More later.

 

[dcr_inc]

Ok... I give up !!

 

[btt]

Todd,
Don't kill yourself building and shipping.. We can all wait a little longer for delivery..

I appreciate it! Thanks for understanding.

 

[dcr_inc]

@KevinC Thanks for showing how inconsistent my posts are.. I am "impatiently" waiting but not trying to Kill Todd in the process..

 

[KevinC]

@KevinC Thanks for showing how inconsistent my posts are.. I am "impatiently" waiting but not trying to Kill Todd in the process..

I’m just playing around. Don’t take it seriously or personally.

 

[btt]

I am "impatiently" waiting but not trying to Kill Todd in the process..

I can't wait to send you one! I appreciate the support!

 

[btt]

Just finished taking the second batch to the post office.

 

[dcr_inc]

@KevinC No Worries... Its all good !!

 

[FP761]

@dcr_inc: Looking forward to your feedback of results after receiving the microP25RX, especially results from the County System to the "East".

 

[KevinC]

It will be interesting to see how it performs in my area. Multiple simulcast sites with anywhere from 5 to 14 subsites and lots of Band 14 LTE.

 

[ScannerDude244]

It will be interesting to see how it performs in my area. Multiple simulcast sites with anywhere from 5 to 14 subsites and lots of Band 14 LTE.

Same here they told a company named lazer broadcast to install filter system last month not sure if they did, but I still see alot of noise across the band.

 

[goldmyne99]

FWIW. 99% of my MicroP25RX testing has been on P25 simulcast systems.
Three on 850 and one on 770. Two are phase 1 and two are phase 2.
Here is a snapshot of my 770 spectrum. The P2 770 system is 9 miles from me.
The MicroP25RX has performed very well during the testing for me...both at home and during multiple drive tests.

YMMV. Of course, all areas will have much different RF conditions.