On 26/06/2008, Jim Lux [EMAIL PROTECTED] wrote:
The key words when working with relays are debouncing, contact
wetting currents and contamination control of contact materials.
Contrary to the common belief, silver is not the best material for low
voltage contacts (24 V) due to the high
W0UN:
What I think is happening to you is the same sort of thing. There is
such a low voltage across the contacts that any sort of oxide film
prevents making a good contact. For a test try cutting a thin strip
of a 3x5 file card and insert it between the contacts and press the
contacts closed
John I think you're on the right track but the oxide could
be due to different paddle contact metals. Someone reported a similar
problem with a Begali paddle but I cannot find the reference for this
at the moment. Piero once used some odd alloy for his standard paddle
contacts. The
Quoting Ahti Aintila [EMAIL PROTECTED], on Thu 26 Jun 2008
12:59:31 AM PDT:
On 26/06/2008, Jim Lux [EMAIL PROTECTED] wrote:
The key words when working with relays are debouncing, contact
wetting currents and contamination control of contact materials.
Contrary to the common belief, silver
maybe if you plated the skunk with silver.
73 W9OY
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At 06:38 AM 6/26/2008, you wrote:
maybe if you plated the skunk with silver.
73 W9OY
Platinum is the ultimate in contact, it will not corrode when exposed
to quite a few chemicals, medical instruments tend to use platinum
for electrodes because they need ultra reliable connections, it's
: Art Gartner [EMAIL PROTECTED]; flexradio@flex-radio.biz
Sent: Thursday, June 26, 2008 2:59 AM
Subject: Re: [Flexradio] K8RA P4 Paddle with Flex5000
On 26/06/2008, Jim Lux [EMAIL PROTECTED] wrote:
The key words when working with relays are debouncing, contact
wetting currents
At 26-06-08 10:22, you wrote:
Hi Guys,
I have been following this thread with some interest because I
occasionally experience this problem with the SDR-1000. Since the
problem seems not to occur on the IC-7000, I made a couple of
measurements. I have my paddles connected through the key port on
John,
You forgot to tell us what happened with the polecat !
Ed K5RJI
On Thu, Jun 26, 2008 at 11:56 AM, John Brosnahan -- W0UN [EMAIL PROTECTED]
wrote:
At 26-06-08 10:22, you wrote:
Hi Guys,
I have been following this thread with some interest because I
occasionally experience this
I just got a new P4 paddle from K8RA. About every once in awhile the dah
paddle does not make a connection, i.e. I get nothing out. My Vibroplex
works fine. I thought it might be the cable so I switched cables. Same
results. I unchecked iambic to just manually key the transmitter and the
same
-radio.biz
Subject: [Flexradio] K8RA P4 Paddle with Flex5000
I just got a new P4 paddle from K8RA. About every once in awhile the dah paddle
does not make a connection, i.e. I get nothing out. My Vibroplex works fine. I
thought it might be the cable so I switched cables. Same results. I unchecked
iambic
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Art Gartner
Sent: Wednesday, June 25, 2008 7:06 AM
To: flexradio@flex-radio.biz
Subject: [Flexradio] K8RA P4 Paddle with Flex5000
I just got a new P4 paddle from K8RA. About every once in awhile the
dah
[EMAIL PROTECTED]
To: Art Gartner [EMAIL PROTECTED]
Cc: flexradio@flex-radio.biz
Sent: Wednesday, June 25, 2008 8:16 AM
Subject: Re: [Flexradio] K8RA P4 Paddle with Flex5000
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Art Gartner
Sent: Wednesday
At 25-06-08 12:57, Jay Sewell wrote:
Hi John and Art.
I've read your description of the problem, Art, and I have read the
ideas presented by John. I would like to comment on this situation
based on my own experience. My Flex5000A was new in March.
I would like to know the experience of
basis.
John, thanks for your ideas.
73, Jay
- Original Message -
From: John Brosnahan -- W0UN [EMAIL PROTECTED]
To: Jay Sewell [EMAIL PROTECTED]; Art Gartner [EMAIL PROTECTED]
Cc: flexradio@flex-radio.biz
Sent: Wednesday, June 25, 2008 6:50 PM
Subject: Re: [Flexradio] K8RA P4 Paddle
At 05:45 PM 6/25/2008, Jay Sewell wrote:
John,
I fully understand and feel your approach is sound. I didn't mean to imply
otherwise. Wouldn't it be great if this were the cause and the problem
could then be perhaps easily addressed? It would certainly be very useful
to know one way or the
You can try using the COM port to key the rig. I think the new contact
material sometimes acts like a semiconductor instead of a conductor in some
circuits.
Pin 4 is common Pin 6 dit, Pin 8 dah. You can get the plug for a buck or so
at Radio Shack. You set up the COM port under
At 25-06-08 19:45, Jay Sewell wrote:
John,
I fully understand and feel your approach is sound. I didn't mean
to imply otherwise. Wouldn't it be great if this were the cause and
the problem could then be perhaps easily addressed? It would
certainly be very useful to know one way or the
Quoting Ahti Aintila [EMAIL PROTECTED], on Wed 25 Jun 2008
10:15:08 PM PDT:
On 26/06/2008, Jim Lux [EMAIL PROTECTED] wrote:
I don't have the F5K schematic, so I don't know what sort of
conditioning or input circuit they use.
Jim gave a good list. I agree, SDR1k has a pretty reliable
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