That board is being phased out.
My board has 14 in a string.
-----Original Message-----
From: Pete Smith N4ZR <n4zr@contesting.com>
To: Louis Parascondola <gudguyham@aol.com>
Sent: Fri, Mar 7, 2014 4:42 pm
Subject: Re: [Amps] Harbach metering board in SB-220
My board has 14 in a string.
73, Pete N4ZR
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On 3/7/2014 8:47 AM, Louis Parascondola wrote:
Those resistors are almost never problematic. I would more likely
suspect a poor solder connection or a swith problem. BTW....The new
board has 3 resistors like the old style but the resistors are good
quality. Makes assembly a lot easier.
-----Original Message-----
From: Pete Smith N4ZR <n4zr@contesting.com>
To: Louis Parascondola <gudguyham@aol.com>
Sent: Fri, Mar 7, 2014 8:31 am
Subject: Re: [Amps] Harbach metering board in SB-220
Yes, it reads grid current. I'm thinking that maybe we should
assume the two problems *aren't* connected. I vaguely recall
someone saying that the voltage multiplier resistors on the
Harbach board are under-rated and therefore prone to failure
- assuming I dig in there and discover that one or
more are open, what would be an appropriate
replacement? The value is a total of 14 meg.
73, Pete N4ZR
Check out the Reverse Beacon Network at
http://reversebeacon.net,
blog at reversebeacon.blogspot.com.
For spots, please go to your favorite
ARC V6 or VE7CC DX cluster node.
On 3/7/2014 7:31 AM, Louis Parascondola wrote:
Does it read grid current? Often times when the wires are
disturbed like when wiring a new board, you could have a bad
wire or connection. Recheck the connections to the board on
the yellow and orange wires. Also make sure no wires came off
the switch or the meter to the board. They should have used
strained wire. broken wires often the problem.
-----Original Message-----
From: Pete Smith N4ZR <n4zr@contesting.com>
To: Amps <Amps@contesting.com>
Sent: Fri, Mar 7, 2014 7:17 am
Subject: [Amps] Harbach metering board in SB-220
I am trying to understand a minor problem in my SB-220, which otherwise
works fine. I originally installed the Harbach board because the HV was
reading low. It fixed that, but quite quickly thereafter the HV
metering failed. I *think* the relative power metering failed at the
same time, but can't remember for certain - a common cause is puzzling
because I can't see any commonality between the two circuits.
Can anyone help me identify components that are likely responsible?
--
73, Pete N4ZR
Check out the Reverse Beacon Network at
http://reversebeacon.net,
blog at reversebeacon.blogspot.com.
For spots, please go to your favorite
ARC V6 or VE7CC DX cluster node.
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