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03-14-26 Why dont the AOR digital radios do NXDN 9600? looking at AOR 5700D radios but it seems to lack NXDN 9600 12.5 the line up of radios they offer lack this. Is there a technical reason for this? 03-14-26, 17:09 pm looking at AOR 5700D radios but it seems to lack NXDN 9600 12.5 the line up of radios they offer lack this. Is there a technical reason for this? View article »
03-14-26 Delaware County Pa New System This was sent to all users of the Delaware County police and fire system as well as Posted on the county council Over the past few weeks, First Responders in Delaware... 03-14-26, 17:08 pm This was sent to all users of the Delaware County police and fire system as well as Posted on the county council Over the past few weeks, First Responders in Delaware County have experienced emergency communication radio issues that are being caused by Troposphere Propagation, commonly referred to as ducting. The ducting prevents First Responders from communicating with the 911 Center. Police Departments from across the County have reported problems with radio communications during the... Read more View article »
03-14-26 Base station build: Meeting NEC 810.21... I'm posting this thread in the interest of sharing my experience and to document setting up a base station antenna system that complies with NEC 810.21 parts A-K. My... 03-14-26, 17:06 pm I'm posting this thread in the interest of sharing my experience and to document setting up a base station antenna system that complies with NEC 810.21 parts A-K. My reference material is from this PDF from Mike Holt Enterprises. First step, acquire material for grounding. 40' # 8 solid copper wire from the antenna to a grounding rod directly below the antenna, no sharp bends. 30' #6 wire from antenna grounding rod to house grounding rod, buried. 20' #10 wire for bonding coax ground... Read more View article »
03-14-26 Mid-Atlantic (and beyond) MilAir 2026 Knock yourself out... 03-14-26, 17:05 pm Knock yourself out... View article »
03-14-26 SDS150 advice on advanced functions I am considering an SDS150. I need the following requirements, I just want to know if the SDS150 can do this in conjunction with software: I need to be able to... 03-14-26, 17:02 pm I am considering an SDS150. I need the following requirements, I just want to know if the SDS150 can do this in conjunction with software: I need to be able to identify encrypted talk group while searching a TRS for unknown TG's. (obviously I cant listen to them nor do I want to, I just want to identity which new TG's are encrypted and which ones aren't) I want to be able to see live non-voice data on all talk groups within a TRS such as signaling, messages, unit ID, etc. I... Read more View article »
03-14-26 SDS200 Stops receiving My SDS200, just a few months old, runs 24/7 and is connected to a PC running ProScan. Three times in the past week or so, I have found that it has "gone... 03-14-26, 17:02 pm My SDS200, just a few months old, runs 24/7 and is connected to a PC running ProScan. Three times in the past week or so, I have found that it has "gone silent" and stopped receiving signals. Watching the display, it looks "normal" as if its scanning and receiving fine, it just seems to stop receiving signals. I notice, when this issue appears, it will have been scanning just fine for a day or so, then I will notice it "scanning" for long periods (an hour or more) without detecting a... Read more View article »
03-14-26 Unidentified Gaithersburg area frequencies 406.725 p25? very weak 407.2625 n 421 (strong P25 LNK, weak ENC, is this a Vote Scan system?) 409.9375 p25? weak (USPIS Black?) 451.1 d 131 very weak static voice (WSSC... 03-14-26, 16:59 pm 406.725 p25? very weak 407.2625 n 421 (strong P25 LNK, weak ENC, is this a Vote Scan system?) 409.9375 p25? weak (USPIS Black?) 451.1 d 131 very weak static voice (WSSC Germantown?) 452.2875 cc 6 keyed-up no TG (Google Reston?) 452.2875 cc 2 SL 2 keyed-up no TG (Google Reston?) 452.3875 dmr? Weak Morse 452.825 Morse 454.275 173.8 (sounds like PEPCO DC operations, not PEPCO Security as per RR DB?) 462.375 cc 4 tg 11 weak (Germantown Elementary School?) 467.9 d 054 running to the back door... Read more View article »

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