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manhattan style pads
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nd8i
I've been using ugly-style construction,
which has worked quite well. I've noticed a bunch of constructors have used Manhattan- style construction. Not being willing to leave well enough alone, I want to give it a try. Where do people get the pads? Or how does one make them from blank pcb material? I suspect that trying to punch them out of pcb material is a pretty slow and tedious process, so I suspect there must be a better alternative. tia, Bruce |
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Mark Jones
开云体育Bruce
?
I
bought a "Copper island Construction Kit" but they ceased trading a while ago, I
found someone (and I can't remember who or find the e-mails) that sent me some
replacement (re-stock) pads via the GQRP reflector. I just paid the postage - a
great deal and very helpful, he said that a friend of his was able to make them
at work.
?
Sorry
I can't help more - I thought about making some but it was just to
tricky.
?
Mark.
G0MGX
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Hans Summers
Mark, Bruce et al
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I don't think the difference between "ugly" and "Manhatten" methods is all that much. My method is a bit of a hybrid I suppose. Mostly ugly. But if I find a point needs to be better anchored I sometimes use a 10M resistor to ground (ok for low impedance signal points) or a .22uF capacitor to ground (ok for dc voltage points). Sometimes I find I want pads. I mounted all the BITX20 inductors and trifilar transformers on pads. But not nice circular pads like in the copper island construction kit. I just find scraps of PCB stock and cut them up into rough squares approximately 5mm x 5mm with a wire cutter. They're ugly but it works and takes literally seconds. 73 Hans G0UPL -----Original Message-----
From: Mark Jones <Mark@...> To: BITX20@... <BITX20@...> Sent: Sat Jun 26 16:39:19 2004 Subject: RE: [BITX20] manhattan style pads Bruce I bought a "Copper island Construction Kit" but they ceased trading a while ago, I found someone (and I can't remember who or find the e-mails) that sent me some replacement (re-stock) pads via the GQRP reflector. I just paid the postage - a great deal and very helpful, he said that a friend of his was able to make them at work. Sorry I can't help more - I thought about making some but it was just to tricky. Mark. G0MGX -----Original Message----- From: nd8i [mailto:bruceraymond@...] Sent: 26 June 2004 16:28 To: BITX20@... Subject: [BITX20] manhattan style pads I've been using ugly-style construction, which has worked quite well. I've noticed a bunch of constructors have used Manhattan- style construction. Not being willing to leave well enough alone, I want to give it a try. Where do people get the pads? Or how does one make them from blank pcb material? I suspect that trying to punch them out of pcb material is a pretty slow and tedious process, so I suspect there must be a better alternative. tia, Bruce Yahoo! Groups Sponsor ADVERTISEMENT click here _____ Yahoo! Groups Links * To visit your group on the web, go to: * To unsubscribe from this group, send an email to: BITX20-unsubscribe@... * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. |
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Bruce Raymond
开云体育Mark
& Hans,
?
Many
thanks for your replies.? Small rectangular pads should work
just
fine,
and those I can come up with - I don't know why it didn't occur
to
me.
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Thanks
for your help,
Bruce/nd8i
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Wes Hayward
开云体育Hi All,
?
Actually, I think that the Manhattan in the QRP
construction method really refers to the use of straight wires on a 90 degree
grid.?? At least that is where the term
originated.?????Typical integrated circuits use a
layout that follows a Manhattan format.? A recent reference is John Baliga,
"Chips Go Vertical," IEEE Spectrum, March, 2004,
pp43-47.????
?
I agree with Hans -- I have really seen no
difference between construction on a ground plane when using pads and building
without them, other than building without is
faster.????? There is rarely a need to go as high as
10M with the resistors if you don't have them around.?? Something much
smaller values will work just as well.
?
My son and I picked the term "ugly" on our 1981 QST
paper "The Ugly Weekender" for a specific reason:?? We wanted to
emphasize that there is no relationship between circuit performance and the
"pretty" nature of the construction, including that on a printed
board.?? In this case, it is the use of extensive ground plane that
makes the circuitry work well.
?
73, Wes
W7ZOI
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Hans Summers
开云体育?
> I
agree with Hans -- I have really seen no difference between
>
construction on a ground plane when using pads and building
> without them, other than building without
is faster.?????
> There is rarely a need to go as high as 10M
with the
> resistors if you don't have them
around.?? Something
> much smaller values will work just as
well.
?
Yes,
true - I found that Rapid Electronics sell a very useful resistor variety pack
containing 1000 resistors in 63 values from 4.7ohms to 10M. The number of each
varies from 5 to 30 depending how common they think they are. E.g. they have 30x
10K, 100K etc, and only 5x 830K. Price is ?9.75. I just *KNOW* I probably won't
want the 10M and they've put 20 of them in. Thought I'd start at the top and
work my way down through 6M8, etc.
?
72/3
de Hans G0UPL
http://www.HansSummers.com |
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