*Since I started back on my Drakes I couldn't find a source for Deoxit
locally, when I found it on the net they wanted as much for shipping as the
5 oz can cost. I found it at Musician's Friend for $14.98 and FREE
shipping. I'm not plugging them just thought you might like a source for it
and not
Greeting Drake fans,
I am a new subscriber to this list. I have in the past owned
many pieces of Drake ham equipment. I have just recently picked up a Drake
TR-M transceiver. My question is: Have any of you used a TR-M on the ham
bands? It appears to be a neat compact unit. I wish to
Lee -
Pin 6 'could' indicate a leaky C90A, but resistance checks through
electrolytics are so inconsistent (polarity of leads, voltage applied,
current available, etc., that I just don't bother with them.. I don't
think I have ever 'found' a problem through resistance checks!
You should
I don't think the TR-M would be a good choice for 60 meters. The maximum legal
power is listed as, an effective radiated power (ERP) not to exceed 50 W PEP.
The TR-M is a 150 watt radio on SSB. I'm not sure if you could get it down to
the legal limit easily unless you were to use a very
Lou, I would recommend not using the TR-M for amateur radio use. It's not
really going to be that great on the ham bands being limited to 10 channels. I
would ether keep it for a collector radio or sell it to someone who wants it
for a collection. Get yourself a real ham radio. I like the
Lee -
If only 0.5 VDC on the Base of Q7 and 18V on the Collector, the
transistor is not turned on at all. Perhaps R131 has gone way up in value??
You should see about 0.02V on the Emitter, about 1V on the Base, and
about 7.5V on the Collector with the AF GAIN at minimum.
73, Garey - K4OAH
I had never heard of the TR-M, but upon looking it up, it seems quite
appropriate for 60 meters except for the power level. I don't know how
hard that would be to deal with. Its crystal control looks good for 60m
to me. I would not consider it for any other ham bands.
73 de W3NU
On
The information I found on the TR-M says that it has transmitting gain
control. It may be possible to apply a DC voltage to that to keep the output
power down to 50 Watts for 60 Meters.
73,
Bob AD3K
From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net]
On Behalf Of
- Original Message -
From: Bob Spooner rl...@psu.edu
To: 'Charles Ring' w...@roadrunner.com; 'Al'
wenj...@gmail.com
Cc: 'Lou Ribble' n...@frontiernet.net; 'Drake List'
drakelist@zerobeat.net
Sent: Saturday, April 02, 2011 10:53 AM
Subject: Re: [Drakelist] TR-M
The information I
Basically the FCC (I do not have the quote handy) said that the limit would
be the equivalent of 50 watts applied to a dipole.
So, in practice, some have tweaked their power into the transmission line
taking into consideration the loss of the transmission going to the dipole.
Some have also
- Original Message -
From: Kris Merschrod k...@merschrod.net
To: 'Drake List' drakelist@zerobeat.net
Sent: Saturday, April 02, 2011 7:36 PM
Subject: [Drakelist] 60 meter 50 watt equivalent from a dipole
Basically the FCC (I do not have the quote handy) said that the limit
would be
Lee -
OK. You need to measure resistor R131. Q7 is NOT turned on at all,
there is no current through it.
The middle lead is the Collector, not the Base. So the Base is 0.46
which isn't enough. The Collector is 18V, indicating that there is NO
current through R148. I suspect either
Lee -
Yes, C90A IS an electrolytic, it is part of the Twist-Lok can cap. It
is the terminal with NO mark on it (square, half-round, triangle on the
other three). The terminals are all ' + ', the can is common ' - '.
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
For years I thought it was sufficient to test caps for
dissipation factor, another name for ESR, I discovered the
hard way its not. Many will tell you that electrolytic caps
must be tested with polarizing voltage and that may make a
difference in the measured capacitance of some but that
Looking for someone who has a spare they do not need from a parts
R4Cor anyone who has rebuilt one of these? Looks like the crimps
that hold in the bearings has worn on the reduction drive assembly.
Thanks...
Rich
Rich N7TR
ex KI3V, N3AMK, WB3JOV
www.n7tr.com http://www.n7tr.com
On Apr 2, 2011, at 3:16 PM, Woody wrote:
Since I started back on my Drakes I couldn't find a source for
Deoxit locally, when I found it on the net they wanted as much for
shipping as the 5 oz can cost. I found it at Musician's Friend for
$14.98 and FREE shipping. I'm not plugging them
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