[NHRC-user] RE: NHRC-user digest, Vol 1 #24 - 1 msg

[Jasper Patrick E Civ AFFTC/ITCFL]

PNP is the trans. How do we go about changing the firmware? I have access to
a burner. One of the many fine gifts i get to play with at work! However i
requested one because i have never used such a device. Why not teach myself
on duty :). I would prefer to not suck the chip off the board????,thanks for
all the help. I hope others can learn something from my questions,73,p

-----Original Message-----
From: nhrc-user-request at nhrc.net [mailto:nhrc-user-request at nhrc.net]
Sent: Friday, May 02, 2003 11:03 PM
To: nhrc-user at nhrc.net
Subject: NHRC-user digest, Vol 1 #24 - 1 msg


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Today's Topics:

   1. Re: RE: NHRC-user digest, Vol 1 #22 - 2 msgs (Jeff Otterson)

--__--__--

Message: 1
Date: Fri, 02 May 2003 06:20:55 -0400
To: nhrc-user at nhrc.net
From: Jeff Otterson <jeff at nhrc.net>
Subject: Re: [NHRC-user] RE: NHRC-user digest, Vol 1 #22 - 2 msgs
Reply-To: nhrc-user at nhrc.net

Hi Pat,

   are you using a PNP transistor to generate the keying voltage?

   The NHRC-6 expects the audio delay (when enabled) to be about 1/4 
second.  That delay is set in the firmware.  The firmware could be modified 
to work better with longer delays.

   Regards,

   Jeff

At 04:15 PM 5/1/2003, you wrote:
>Ok great jeff!. Here goes my first one. I am using a transistor to take the
>ptt off my #6,and gimme about +3 to 6 volts to key my radio. About every 2
>minutes it is keying by itself. I have attempted to add some resistance
into
>the ptt but that didnt seem to do it. Everything is bypassed too. I am used
>to building antennas,playing with the digital modes,dx,ing,weak signal,but
>for the last 5 months i have been attempting to educate myself on these
>transistor things. I like tubes better! Any thoughts? Along with that,i am
>thinking about using a vox setup instead,because i am using a delay board
>and the transmit audio radio is unkeying just slightly before the audio is
>ended. I need the full 2+ seconds on the delay due to the key up delay on
>the re-transmit radio. I am hoping that others may get some insite form
>watching this discussion. My current project is linking to some cellulkar
>stuff. If any HAMS would like some details,email me direct and ill be glad
>to share the nightmare with you :).
>
>