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Search: Posts Made By: kb4mdz
Forum: Industry Discussion 10-31-2017, 9:01 AM
Replies: 9
Views: 702
Posted By kb4mdz
CDM1250's are about a $0.25 a dozen on the used...

CDM1250's are about a $0.25 a dozen on the used market. I've been involved for several years with replacing a bunch o' Federal Informers (which would occasionally get stuck in stupid mode, randomly)...
Forum: Industry Discussion 09-22-2017, 9:40 PM
Replies: 22
Views: 1,500
Posted By kb4mdz
Tell us how you really feel. You left out...

Tell us how you really feel.

You left out the crappy computers filled with bloatware and adware, assembled in China (can you say FoxConn?) with practically slave wages and conditions. Messrs...
Forum: Industry Discussion 08-19-2017, 5:04 PM
Replies: 21
Views: 1,852
Posted By kb4mdz
I have no input on equipment recommendations, but...

I have no input on equipment recommendations, but I do ask for pictures of the aftermath of the cow!!!
:-D
Forum: Radio Equipment Installation Forum 07-23-2017, 7:55 PM
Replies: 22
Views: 1,648
Posted By kb4mdz
Somewhere, I think here on RR, are a couple of...

Somewhere, I think here on RR, are a couple of pictures of a CDM1250 remote mounted with the head in a plastic industrial box with a clear lid & snap latches, and the mic cord coming out thru a cable...
Forum: Industry Discussion 07-17-2017, 8:07 AM
Replies: 3
Views: 554
Posted By kb4mdz
Be aware of RF exposure levels using a...

Be aware of RF exposure levels using a glass-mount antenna that close to your pumpkin.

MY opinion: Don't do it.

Honestly, a 35 watt 800 mhz radio with it's radiation point that close, I'd...
Forum: Radio Equipment Installation Forum 04-23-2017, 5:39 PM
Replies: 103
Views: 8,048
Posted By kb4mdz
They're expensive because they are the RIGHT...

They're expensive because they are the RIGHT thing to use. It's the difference between using a hexagonal die crimp tool for RF connectors like Mini-UHF, N-type, etc, and using a pair of 2 dollar...
Forum: Industry Discussion 04-22-2017, 11:21 AM
Replies: 23
Views: 1,887
Posted By kb4mdz
What swissphone pagers are you using? And what...

What swissphone pagers are you using? And what are your feelings on the Unication pagers?
Forum: North Carolina Radio Discussion Forum 04-11-2017, 12:36 PM
Replies: 13
Views: 1,658
Posted By kb4mdz
There is also no exception for use of a business...

There is also no exception for use of a business radio, such as tow truck driver, taxi driver, delivery driver, trucker in the construction industry, nor school busses, and I'm sure several others. ...
Forum: Industry Discussion 04-03-2017, 9:02 AM
Replies: 14
Views: 3,456
Posted By kb4mdz
Garbage truck drivers who have been told by their...

Garbage truck drivers who have been told by their 'buddy' that a bigger antenna does better. 800 MHz radios. Drivers put on CB fiberglas helically wound sticks. Come to shop complaining of range...
Forum: Radio Equipment Installation Forum 01-12-2017, 11:12 PM
Replies: 5
Views: 818
Posted By kb4mdz
PM Sent.

PM Sent.
Forum: Radio Equipment Installation Forum 11-30-2016, 10:08 PM
Replies: 18
Views: 1,521
Posted By kb4mdz
Sorry, I didn't get to really finish my thoughts...

Sorry, I didn't get to really finish my thoughts earlier. What you get when you have 2 (A & B) radio signals hitting a diode is like an RF mixer. You'll get lots and lots of mixing products; the...
Forum: Radio Equipment Installation Forum 11-30-2016, 7:10 PM
Replies: 18
Views: 1,521
Posted By kb4mdz
FWIW, pager systems have a notoriously bad track...

FWIW, pager systems have a notoriously bad track record for generating RF trash.

And if there's a lot of corroded metal at a site, that too can generate more trash (for example, rust anywhere...
Forum: Industry Discussion 08-24-2016, 8:20 PM
Replies: 5
Views: 1,060
Posted By kb4mdz
Give them a call, direct. They're very helpful. ...

Give them a call, direct. They're very helpful.

index.gif (http://cpicomm.com/)

800-869-9128
Forum: Radio Equipment Installation Forum 08-11-2016, 4:33 PM
Replies: 7
Views: 3,932
Posted By kb4mdz
NMFD204 - Did you ever get an answer about...

NMFD204 -

Did you ever get an answer about channel steering your CDM1250?

Chuk
Forum: Industry Discussion 08-11-2016, 3:00 PM
Replies: 24
Views: 1,860
Posted By kb4mdz
Vertex VXR-1000 is a mobile cross-band repeater,...

Vertex VXR-1000 is a mobile cross-band repeater, 5 watts maximum, and up to 16 channels. It also can be used as a straight mobile radio. 5/2.5/1.0/0.5 watts, front panel mic jack, 16 position...
Forum: North Carolina Radio Discussion Forum 05-29-2016, 9:31 AM
Replies: 10
Views: 837
Posted By kb4mdz
Bote - Gonna burst your bubble about the...

Bote -

Gonna burst your bubble about the 'talkaround on the repeater input' thing. :-)

North Carolina Wildlife Resources Commission did it for ages on their VHF statewide system. Their trick...
Forum: Industry Discussion 01-09-2016, 3:22 PM
Replies: 27
Views: 6,169
Posted By kb4mdz
OK, here it is; sorry for the delay. The...

OK, here it is; sorry for the delay.

The opto-coupler used is an Optek OPI1264C; Off the top of my head, the radio side resistor was about 1.2 Kohm, for about 10 mA diode current, and the relay...
Forum: Motorola Forum 12-16-2015, 4:37 PM
Replies: 2
Views: 586
Posted By kb4mdz
I've got almost all the Cimarron manuals in pdf,...

I've got almost all the Cimarron manuals in pdf, including the now somewhat scarce ANI Cookbook I & II. Quite good, really.

Just wondering if there are some 'best practices' to do early, so I...
Forum: Motorola Forum 12-15-2015, 11:06 PM
Replies: 2
Views: 586
Posted By kb4mdz
MDC1200 aka Stat-Alert info

OK, I've been searching everywhere my google-fu has led me on MDC1200 operation; I've got a HT1250 portable now programmed to do Sel-Call (which audibly alerts, and opens the speaker), Radio Check...
Forum: North Carolina Radio Discussion Forum 12-11-2015, 5:58 PM
Replies: 12
Views: 1,057
Posted By kb4mdz
Look for a signal in that freq. range around the...

Look for a signal in that freq. range around the Dalton Library at UNCC. I seem to remember seeing one of those Primex units when I did some LMR service work there.

Off the top of my head, I...
Forum: Industry Discussion 12-03-2015, 2:12 PM
Replies: 27
Views: 6,169
Posted By kb4mdz
mmckenna has it right; a real radio like a...

mmckenna has it right; a real radio like a CDM1250, set for 2-tone decode; & activate a relay. I've got a design I've used to replace Informers in 28 fire stations. Hasn't missed a lick since they...
Forum: Industry Discussion 09-18-2015, 10:42 PM
Replies: 33
Views: 2,397
Posted By kb4mdz
n5ims has it right; first, user training, and...

n5ims has it right; first, user training, and more training, which includes why, and then consequences.

Example: I work in a municipality and we put ANI in all conventional radios and try hard to...
Forum: Industry Discussion 09-18-2015, 8:45 PM
Replies: 33
Views: 2,397
Posted By kb4mdz
xpqter, have you gotten anywhere with this? ...

xpqter, have you gotten anywhere with this?

Inquiring minds want to know....
Forum: Industry Discussion 09-04-2015, 4:34 PM
Replies: 33
Views: 2,397
Posted By kb4mdz
OK, now we're getting to the meat of the matter. ...

OK, now we're getting to the meat of the matter. Hmm. open pit mine, I take it? And at least you have a repeater, that's good. Situated near the edge of the pit, I hope?

While a new system...
Forum: Industry Discussion 09-03-2015, 1:10 PM
Replies: 33
Views: 2,397
Posted By kb4mdz
OK, we haven't heard back from the original...

OK, we haven't heard back from the original poster, but I'm kinda wondering if a lot of us are jumping the gun, about 'stunning' radios & such.

He's asking about sending a tone on the radio...
Showing results 1 to 25 of 146

 

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