| [GMCnet] RF Interference to the Digi-Panel [message #173954] |
Tue, 19 June 2012 14:51  |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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The following is the reply from Digi-Devices answering my query
to them regarding RF Interference (RFI) to the Digi-Panels.
I'm ready to "pull the trigger" and, as I think Dan Gregg said,
just not worry about the unit alarming while I may be talking
if the RFI reduction techniques by Johnny Bridges don't fix it.
I'm unsure what the difference between the standard unit (DP-104)
at $214.94 list and the "GMC" unit (DP-104J) at 209.95 is. I think
Rob can explain that!
I know that I will need the extended harness at $5 for mounting
on the dash, RV battery monitoring at $15, and engine oil temp
at $27.50 in addition to the regular charges.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ '76 ex-Palm Beach ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
______________
*[ ]~~~[][ ][|\
*--OO--[]---O-*
From: digidevicesinc@gmail.com
To: k2gkk@hotmail.com
Subject: Re: RF Interference to the Digi-Panel
Date: Tue, 19 Jun 2012 10:30:09 -0700
Hi Mac-
Yes, the integrated circuits we use are very high speed,
and can be affected by ham radio.
We've never had a Digi-Panel harmed by it - they just go
crazy while the signal is hitting it.
We have rf filters built in, but they can only do so much.
Best wishes. Art Woodell
----- Original Message -----
From: D C *Mac* Macdonald
To: digidevicesinc@gmail.com
cc: Macdonald, DC Mac Hotmail
Sent: Sunday, June 17, 2012 4:43 PM
Subject: RF Interference to the Digi-Panel
I have heard several reports that the Digi-Panel is severely
affected by signals radiated by ham radio transmitters in
the range from 3 through 450 Megahertz.
Are there any (specific or otherwise) recommendations
on methods to combat this effect?
Many of the folks in the GMC Motorhome group are also
ham radio operators and would appreciate any information
or advice you can provide on this matter.
Sincerely yours,
D C "Mac" Macdonald
Amateur Radio License K2GKK (since 1953)
Oklahoma City, OK
e-mail: k2gkk@hotmail.com
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| Re: [GMCnet] RF Interference to the Digi-Panel [message #173997 is a reply to message #173954] |
Wed, 20 June 2012 02:14  |
 |
USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Mac,
The DP-104 requires a separate oil pressure transducer. . I do not know if the DP-104 comes with the transducer or not, however,
I'll find out.
The DP-104J uses a piggy back spade connector on the OEM oil pressure transducer so the DP and the OEM GMC oil pressure gauge can be
connected. If you connect a DP-104J to a OEM GMC pressure transducer without the OEM gauge connected it will NOT work. Been there
done that!
I intend to order a DP-104 and "T" in a separate oil pressure transducer as that way I will have a redundant oil pressure system
that won't be affected by problems with the OEM transducer or gauge.
Regards,
Rob M.
-----Original Message-----
From: D C *Mac* Macdonald
The following is the reply from Digi-Devices answering my query
to them regarding RF Interference (RFI) to the Digi-Panels.
I'm ready to "pull the trigger" and, as I think Dan Gregg said,
just not worry about the unit alarming while I may be talking
if the RFI reduction techniques by Johnny Bridges don't fix it.
I'm unsure what the difference between the standard unit (DP-104)
at $214.94 list and the "GMC" unit (DP-104J) at 209.95 is. I think
Rob can explain that!
I know that I will need the extended harness at $5 for mounting
on the dash, RV battery monitoring at $15, and engine oil temp
at $27.50 in addition to the regular charges.
~~ ~ D C "Mac" Macdonald ~ ~~
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] RF Interference to the Digi-Panel [message #173998 is a reply to message #173997] |
Wed, 20 June 2012 02:53 |
mickeysss
Messages: 1476
Registered: January 2012
Karma: 0
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Senior Member |
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is the 4 foot harness needed to put it in the dash, if so, or if there is a mystery about it i will take the harness.
I plan to put it above the air conditioner hole. ask jim k if you need the harness to put it there. thank you mickey :-)
i hope this is ok to put this on the list, i will take the same as rob M., what ever he does. thanks for the help in doing this.
check back tomorrow after work all day 10 pm pacific.
On Jun 20, 2012, at 12:14 AM, Robert Mueller wrote:
> Mac,
>
> The DP-104 requires a separate oil pressure transducer. . I do not know if the DP-104 comes with the transducer or not, however,
> I'll find out.
>
> The DP-104J uses a piggy back spade connector on the OEM oil pressure transducer so the DP and the OEM GMC oil pressure gauge can be
> connected. If you connect a DP-104J to a OEM GMC pressure transducer without the OEM gauge connected it will NOT work. Been there
> done that!
>
> I intend to order a DP-104 and "T" in a separate oil pressure transducer as that way I will have a redundant oil pressure system
> that won't be affected by problems with the OEM transducer or gauge.
>
> Regards,
> Rob M.
>
>
> -----Original Message-----
> From: D C *Mac* Macdonald
>
> The following is the reply from Digi-Devices answering my query
> to them regarding RF Interference (RFI) to the Digi-Panels.
>
> I'm ready to "pull the trigger" and, as I think Dan Gregg said,
> just not worry about the unit alarming while I may be talking
> if the RFI reduction techniques by Johnny Bridges don't fix it.
>
> I'm unsure what the difference between the standard unit (DP-104)
> at $214.94 list and the "GMC" unit (DP-104J) at 209.95 is. I think
> Rob can explain that!
>
> I know that I will need the extended harness at $5 for mounting
> on the dash, RV battery monitoring at $15, and engine oil temp
> at $27.50 in addition to the regular charges.
>
> ~~ ~ D C "Mac" Macdonald ~ ~~
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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