[Motorola] M1225 DPL/TPL problem

[Eric Lemmon]

Bill,

I should have mentioned in my previous posting that some of the compact
mikes used on newer Radius mobiles don't need to have the mike hangup clip
grounded.  The button on the back of the mike is insulated from the metal
ring behind it, so that the hangup clip simply completes the circuit.  This
was done because of the prevalence of plastic dashboards.

Try putting a mike clip under the button on the back of the mike to see if
that takes the radio out of CSQ mode.

73, Eric Lemmon WB6FLY


-----Original Message-----
From: motorola-bounces at mailman.qth.net
[mailto:motorola-bounces at mailman.qth.net] On Behalf Of Bill Morphy
Sent: Wednesday, January 24, 2007 6:12 PM
To: Discussion of equipment manufactured by Motorola
Subject: Re: [Motorola] M1225 DPL/TPL problem

Thanks everyone. I'm aware of the mic hang-up function used on 2-way. I 
first came across that scheme when I worked on the Motrac, then Micor and 
Mitrex. They each used a switch inside the mic hang-up hanger which was 
wired across the radio head pins.  I've been removed from 2-way work since 
the recent programmable radios came on the scene and when an FCC license 
became no longer necessary to work on commercial equipment.  The 1225 
apparently has no visible switch or external wiring to function as a PL 
Monitor device (switch).

After being reminded of the hang-up on this list, I tried grounding the mic 
clip on the back of the 1225 mic but it still didn't work yet.  When I get 
to work tomorrow,  I'll look at the "Power Up Mode".


----- Original Message ----- 
From: "Eric Lemmon" <wb6fly at arrl.net>
To: "'Discussion of equipment manufactured by Motorola'" 
<motorola at mailman.qth.net>
Sent: Wednesday, January 24, 2007 8:40 PM
Subject: RE: [Motorola] M1225 DPL/TPL problem


> Bill,
>
> Most commercial mobile radios are designed so that they go into monitor 
> mode
> (carrier squelch) as soon as the mike is lifted from its hangup clip. 
> This
> action complies with the FCC rules that one must monitor the frequency for
> other traffic before transmitting.
>
> Also, be certain that the "Power-Up Mode" is set to "Standard" in the RSS.
> If it is set to "Monitor" the radio will be in carrier squelch.
>
> 73, Eric Lemmon WB6FLY
>
>
> -----Original Message-----
> From: motorola-bounces at mailman.qth.net
> [mailto:motorola-bounces at mailman.qth.net] On Behalf Of Bill Morphy
> Sent: Saturday, January 20, 2007 2:58 PM
> To: Discussion of equipment manufactured by Motorola
> Subject: [Motorola] M1225 DPL/TPL problem
>
> I have several M1225s in VHF and UHF flavor. I'm able to program them for
> either DPL or TPL, but for some reason all receivers operate in CSQ.
>
> Any ideas ?