ml wrote:
does this rule also hold true for example i've opened some tuners
and linear amps, often, i see straps instead of wire going to the
larger coils and switches, even some switch box's have straps from
relays to connectors etc would wire have been 'better' and or
avoid the proximity effect??

Proximity effect isn't a factor unless conductors are very close
together -- I suggest you review the previous postings which explain it.
As far as "better", the answer is that it probably doesn't matter, since
either a wire or strap can usually be pretty easily made large enough to
make loss negligible in those applications.

Roy Lewallen, W7EL

Roy Lewallen wrote:
ml wrote:
does this rule also hold true for example i've opened some tuners
and linear amps, often, i see straps instead of wire going to the
larger coils and switches, even some switch box's have straps
from relays to connectors etc would wire have been 'better'
and or avoid the proximity effect??

Proximity effect isn't a factor unless conductors are very close
together -- I suggest you review the previous postings which explain it.
As far as "better", the answer is that it probably doesn't matter, since
either a wire or strap can usually be pretty easily made large enough to
make loss negligible in those applications.

Roy Lewallen, W7EL

Proximity effect is when you are too close to a directional microphone
and the bass is accentuated. I think you mean mutual coupling.

Steve wrote in news:cde8dec9-5103-41c0-896b-
:

I've seen several programs that will help you calculate the precise
dimensions of a single-turn loop, given the composition of the
radiating element, its thickness, and so on. However, none of these
programs are written to cover the case of a two or more-turn loop.

Does anyone know of a program that will offer guidance in the
construction of a two or more-turn loop?

Dunno about a program. I made a 2-turn transmitting loop for 160 one time,
using a variation of Ted Hart's matching scheme. I did it by cutting it a
bit long, then trimming it with an analyzer to see where it resonated.
Eventually got it to 1:1 at about 1890khz where I wanted it and it received
as well as could be expected. Transmit efficiency was on a par with a
hamstick.


--
Dave Oldridge+
ICQ 454777283
VA7CZ