On Wed, 20 Jan 2010 17:45:41 -0800, ALAN CHANDLER wrote:
>I have also done the 10M conversion and Jim is absolutely correct about the
>four letter incantations. A long, curved hemostat was essential.
The bright side was, the removal of the bandswitch stop screw for the 10 Meter
position was tr
I have also done the 10M conversion and Jim is absolutely correct about the
four letter incantations. A long, curved hemostat was essential.
73, Alan - K6RFK
- Original Message -
From: "Jim Shorney"
To: "Mail List - Drake Gear Drake Gear"
Sent: Wednesday, January 20, 2010 3:17 PM
S
True, but for those who do CW, the 100 or so watts would benefit from the
amplifier. Use the ALC feature and you should be fine. Been doing so for
many years and have had no issues. Note, no QSK here...
As always, the antenna approach is and should always be first consideration
on any attempt t
Opps: mis read. The previous remarks are valid to the t4 series. The tr4
will have to have essentially a resistive network to absorb power to fee the
200 with less than 100 watts. Simply doing so with the gain control will not
do fully. I believe that Drake states this in the manual.
Sor
On Wed, 20 Jan 2010 12:58:13 -0500, Dino Papas wrote:
>I have absolutely no idea how you could install the two 68-pf SM caps yourself
>although I did correspond with a guy who said he'd done itthey have to go
>way down in the recesses of the box that holds the input coil circuitry.
I've d
On Wed, 20 Jan 2010 13:09:55 -, AirRadio wrote:
>I am not sure if it actually does 10m or not, is there an easy way to tell?
The easy way: apply enough exciter power to it on 10 meters to get a reading on
an inline SWR meter, and see if you have reasonably low SWR into the amp. If
so, see if
No worries, Gary.
I have a scope probe and I'll try that tomorrow. I have another DFM, which
has a stated sensitivity of 30mV up to 50MHz and 35mV up to 150MHz. I'll try
a few things out first.
Thanks all
Adrian MW1LCR ~ Wales
-Original Message-
From: Gary Poland [mailto:gpola..
There was some info in the Jan 1981 QST and the 11th edition of Hints & Kinks
that covered the 10-meter adaptation. I'm sending Max a copy separately.
Having said that, it appears that there were a number of "flavors" of L7 built.
The one I ended up with already had the added input circuit cap
oops___
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Adrian,
As the service manual states adjust the 40 mhz by tuning in WWV with the
calibrator on in AM mode. This will avoid pulling the frequency off by using a
probe. Next use a scope probe on pin 17 for the 53.695 per the manual. Do not
use a resisitor in series with the probe, its not necess
Might try using a 10x scope probe on the DFM or just measuring through a
50K resistor. I had a similar problem --just had to fiddle around with
the input R depending on the instrument.
Curt
KU8L
Adrian Rees wrote:
Nigel
Thanks for this. I think you are right. Off to find another way of mea
Nigel
Thanks for this. I think you are right. Off to find another way of measuring
this.
Thanks
Adrian MW1LCR
-Original Message-
From: Nigel Gunn G8IFF/W8IFF [mailto:ni...@ngunn.net]
Sent: 20 January 2010 15:01
To: ree...@btconnect.com
Cc: drakelist@zerobeat.net
Subject: Re: [Drakelist
Hello all
Quick question about the TR7 PBT/Reference Board. According to the manual I
should have 40MHz on Pin 19. This pin is connected to a 470 Ohm Resistor
then to coax and back to the Transistor. I should be able to measure 40MHz
on this pin. I can do that fine.
The next step in alignmnet is
I have just got an L-7, the wavechange switch does go to 10m band but I am not
sure if it actually does 10m or not, is there an easy way to tell? I think the
10m mod is the addition of two capacitors?
Also the case is damaged on the top which is irritating, any ideas on
refinishing, it looks lik
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