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Jhp 520 PTT cable

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dan42101(at)yahoo.com
Guest

Posted: Sat Mar 27, 2010 6:49 am Post subject: Jhp 520 PTT cable

Does anyone know where I could get a remote PTT switch that works properly for this unit? I read in the archives that it does not take a PTT that grounds to talk.

  

 I am uncertain about the note to "connect the PTT line to one of the other lines".

 Thanks.

 

- DjD



         [quote][b]

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nuckolls.bob(at)aeroelect
Guest

Posted: Sat Mar 27, 2010 2:48 pm Post subject: Jhp 520 PTT cable

At 09:43 AM 3/27/2010, you wrote:



 	  Quote: 	
		  Does anyone know where I could get a remote PTT switch that works 

properly for this unit? I read in the archives that it does not take 

a PTT that grounds to talk.



I am uncertain about the note to "connect the PTT line to one of the 

other lines".


	


   Where do you see this 'note'?



Bob . . .

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dan42101(at)yahoo.com
Guest

Posted: Sat Mar 27, 2010 3:17 pm Post subject: Jhp 520 PTT cable

Bob,

 I get hits on "JRC".  The message is below...

 Thanks.

 - DjD

  

  

     Match:  #16  Message:  #19136    Date:  Jul 28, 2004    From:  Steve Maher <lilabner_45(at)yahoo.com>    Subject:  Re: handheld and intercom

  	  Quote: 	
		  

Some handhelds do, some don't.



I had a JRC JHP-520 handheld navcomm, and found that the owner's manual

stated in big black letters, DO NOT GROUND THE PTT LINE TO TRANSMIT. In

that radio, it says you have to connect the PTT line to another line on

the plug, to transmit.



I now have a Vertex (formerly Yaesu) VXA-210 handheld navcomm. Its

manual doesn't say much about what to do with the PTT line, so I called

their service department and talked to one of their techs who seemed

quite knowledgeable. He checked the schematics and told me that

grounding the PTT line to transmit, is definitely the correct way to

go.



Whatever radio you're contemplating, if I were you I'd call the company

first and ask them about the PTT line. Personally I like the ground-it

types, since they conform to what most intercoms do.



Steve Maher

San Diego,  CA



--- On Sat, 3/27/10, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com> wrote:



From: Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com>

Subject: Re: Jhp 520 PTT cable

To: aeroelectric-list(at)matronics.com

Date: Saturday, March 27, 2010, 5:46 PM



 --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)>



At 09:43 AM 3/27/2010, you wrote:



 	  Quote: 	
		   Does anyone know where I could get a remote PTT switch that works properly for this unit? I read in the archives that it does not take a PTT that grounds to talk.

 

 I am uncertain about the note to "connect the PTT line to one of the other lines".


	


  Where do you see this 'note'?



Bob . . . 



Do not archive

	


         [quote][b]

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rampil

Joined: 04 May 2007
Posts: 870

Posted: Sun Mar 28, 2010 3:05 pm Post subject: Re: Jhp 520 PTT cable

As it happens, Japan Radio Corp sold this product to Rexon Tech.

It is now known as the RHP-520. You can find the users manual on the 

web and download it as I did.



In a brief scan, I saw nothing about the PTT jack or any detail about

headset operation.  The headset adapter cable I have does not split out

a ptt jack



The RHP nee RHP  is a great little radio IMHO!

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_________________
Ira N224XS

dan42101(at)yahoo.com
Guest

Posted: Thu Apr 01, 2010 11:15 am Post subject: Jhp 520 PTT cable

Thanks,

 I borrowed a David Clark c 10-15 PTT switch.  I moved the wires in the one jack I could get open every way I could think of.  No help.

  

 I wonder if I could cut the wire to the internal mike on the radio, and just use it with the headset only and no remote PTT.



- DjD



--- On Sun, 3/28/10, rampil <ira.rampil(at)gmail.com> wrote:



  	  Quote: 	
		  

From: rampil <ira.rampil(at)gmail.com>

Subject: Re: Jhp 520 PTT cable

To: aeroelectric-list(at)matronics.com

Date: Sunday, March 28, 2010, 6:05 PM



 --> AeroElectric-List message posted by: "rampil" <ira.rampil(at)gmail.com (ira.rampil(at)gmail.com)>



As it happens, Japan Radio Corp sold this product to Rexon Tech.

It is now known as the RHP-520. You can find the users manual on the 

web and download it as I did.



In a brief scan, I saw nothing about the PTT jack or any detail about

headset operation.  The headset adapter cable I have does not split out

a ptt jack



The RHP nee RHP  is a great little radio IMHO!



--------

Ira N224XS





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=292139#292139



http://www.matronics.com/Navig========================ht





	


         [quote][b]

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nuckolls.bob(at)aeroelect
Guest

Posted: Thu Apr 01, 2010 1:05 pm Post subject: Jhp 520 PTT cable

At 02:08 PM 4/1/2010, you wrote:

 	  Quote: 	
		  Thanks,

I borrowed a David Clark c 10-15 PTT switch.  I moved the wires in 

the one jack I could get open every way I could think of.  No help.



I wonder if I could cut the wire to the internal mike on the radio, 

and just use it with the headset only and no remote PTT.


	


   I'm not sure the JHP-500 series radios will accept

   external PTT. My cord only carries mic audio from

   the headset to the radio. I use the hand-held's

   built in PTT to transmit.  If one can track down

   a service manual with a schematic of the radio,

   we could easily figure out what it takes.



   Bob . . .

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rampil

Joined: 04 May 2007
Posts: 870

Posted: Fri Apr 02, 2010 1:44 pm Post subject: Re: Jhp 520 PTT cable

Hi Bob,



If you do run across a copy of the JHP/RHP service manual, I'd

be interested in having a copy even though I am not much of an SMT

jock.



I am not sure what Dan (DjD) is trying to do with cutting an

internal mike wire, but the internal mike is out of circuit when external

mike is plugged in as is standard.  Just the PTT function stays in the box



Thanks,



Ira

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_________________
Ira N224XS

dan42101(at)yahoo.com
Guest

Posted: Mon Apr 05, 2010 3:31 pm Post subject: Jhp 520 PTT cable

Bob,

 Below is the reply from the good folks at Sam's photofacts...  I also sent an email to Rexon.  I won't hold my breath for that reply.  

  

 I guess this radio will be on ebay shortly.

 Thanks to all.

- DjD

 

Sorry, we cannot locate anything on this.

 

 

 

 

 

----

 

Jeff Morris

 

 

 

SAMS Technical Publishing, LLC

 

9850 East 30th Street

 

Indianapolis, IN 46229

 

 

 

Phone: 1-800-428-7267

 

Fax: 1-800-552-3910

 

Email: customercare1(at)samswebsite.com (customercare1(at)samswebsite.com)

 

--- On Thu, 4/1/10, Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com> wrote:



  	  Quote: 	
		  

From: Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com>

Subject: Re: Re: Jhp 520 PTT cable

To: aeroelectric-list(at)matronics.com

Date: Thursday, April 1, 2010, 4:05 PM



 --> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)>



At 02:08 PM 4/1/2010, you wrote:

 	  Quote: 	
		   Thanks,

 I borrowed a David Clark c 10-15 PTT switch.  I moved the wires in the one jack I could get open every way I could think of.  No help.

 

 I wonder if I could cut the wire to the internal mike on the radio, and just use it with the headset only and no remote PTT.


	


  I'm not sure the JHP-500 series radios will accept

  external PTT. My cord only carries mic audio from

  the headset to the radio. I use the hand-held's

  built in PTT to transmit.  If one can track down

  a service manual with a schematic of the radio,

  we could easily figure out what it ========================http://www.matroni/forums.matronics.com/" ;               -Matt Dralle, List Admin==========





	


         [quote][b]

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Turbo_Boss

Joined: 14 Jul 2009
Posts: 10
Location: Panama Rep. of Panama - Central America

Posted: Fri Apr 29, 2011 5:34 pm Post subject: Re: Jhp 520 PTT cable

I have a JRC 520 and the external PTT work when you ground it.



Here is the HEADSET and PTT schematics

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