On Aug 8, 2011, at 8:58 AM, John Brown wrote:
Probably need two antennas, two receivers and a multiplexer that can
switch between either receiver as the signal on each antenna fades
in and out. It was called "Diversity Reception" and was used for
commercial RRTY (among others uses)in orde
Probably need two antennas, two receivers and a multiplexer that can switch
between either receiver as the signal on each antenna fades in and out. It
was called "Diversity Reception" and was used for commercial RRTY (among
others uses)in order to maintain a constant signal feed to the RTTY
machine
Yes. Diversity reception is a well known technique, but you need a radio
so-configured or a separate box to process the inputs from the two
antennas. The antennas must be physically separated from each other
sufficiently that a fade on one would not necessarily occur in the other at
the same time
Look up "diversity reception"
On 08/07/2011 11:22 PM, Neil M Califano wrote:
This is a bit off topic, but how can two receiving antennas be used to reduce
fading?
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This is a bit off topic, but how can two receiving antennas be used to reduce
fading?
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Garey,
The relay came in from Mouser and I made the mod today. (The bad one was the
Varley) The T4XC is working fine. Thank you for the assistance.
Rick
W0RT
- Original Message -
From: "Garey Barrell"
To: "drakelist"
Sent: Sunday, July 17, 2011 12:43 PM
Subject: Re: [Drakelist] T4X
Sundays, 2000 UTC on 7238 +/-...
-Original Message-
From: ron
Sent: Sunday, August 07, 2011 4:07 PM
To: drakelist@zerobeat.net
Subject: [Drakelist] drake net
gang,
excuse me for this but I keep misplacing when and where is the Drake net.
(at least I know it's today ...)
can s
gang,
excuse me for this but I keep misplacing when and where is the Drake net.
(at least I know it's today ...)
can someone clue me in?
73
Ron, wb1hga
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Always use lock washers under those nylon insert nuts. I have seen many
come loose over the years.
73,
John, W4AWM
In a message dated 8/7/2011 3:38:49 P.M. Eastern Daylight Time,
k9...@aol.com writes:
I've found that any antenna, tower, rotor, etc. device used outdoors can
bene
I've found that any antenna, tower, rotor, etc. device used outdoors can
benefit from the use of stainless steel hardware, nylon insert locknuts as
appropriate. You can buy it online at a price, including shipping, that is
less than what you can buy locally for standard, plated hardware.
-
Finally got the switch box apart. Have to replace all the external
screws. even with penetrating oil I was only able to remove one without
snapping the head off, or having to grind them off, just way too rusty.
The motor frame also is a little rusty, apparently the plastic bag was
not as wat
Looking for the plug in AM filter for a R4C.
thanks
dale wt4t
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Folks,
I need a A or B loine dial to do a test on...
it can be broken, warped scratched etc...just need to be also YELLOWED.
Thanks,
73,
Lee
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Any one know what kind of plastic the Drake A & B line dials are make
of???
Maybe it's ABS...since that was used a lot back then?
I'm working on something here that may be of great help to many DFrake
owners.
73,
Lee, KC9CDT
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Most any HC-6/U crystal will 'work' in the Drakes. The oscillation may or may not be close to the
marked frequency, depending upon the specifications the crystal was originally designed for, and
it's age. But most will be within 5 - 10 khz, unless they are fifth overtone or some other weird cu
Neil,
I've plugged in a lot of "stray" and odd frequency crystals and they have all
worked. That said, the correct "version" of crystal will provide much better
band to band calibration. The frequency calculation as to where you are tuned
is much easier too.
73
Ron WD8SBB
--- On Sun, 8/7/11,
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