W1 idea

[wd4lst]

It would seem like you could combine the W1 with a small DDS based sig gen for a very compact basic antenna analyzer. Is it sensitive enough on the lowest scale to do that?
Just thinkin....
-Pete

Pete Axson
WD4LST
17901 NE 18th Ave
Citra, FL 32113

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[johnny-52]

Hi Pete,

K2 is a QRP rig and can deliver output power at around 0.5 watt.  Itself
has already been a nice RF signal generator.  Turn your K2 power knot fully
counterclockwise.  Press and hold 'tune' and read the SWR on the W1 over
the tuning range.  Due to the lower power output from K2, interference to
other Ham stations is minimal.

Unlike the LP100, W1 is not a vector watt meter.  It can only give you
reading of SWR and Power.

In the past, I have several times in this reflector mentioned that a
transcevier with TCXO or stable frequency output has already been a very
good RF source. The trick is to use a good RF attenuator or directional
coupler to lower the output level.  Now AT1, CP1 could be choices.

I finish the construction of AT1 which is a piece of cake.  Unlike the
usual attenuator obtained from the market, AT1 can tolerate 2 watts RF
power.  If you combine K2 with AT1, the whole will be a nice RF signal
source.  Of course, don't forget to turn the RF power knot fully
counterclockwise.



73

Johnny Siu VR2XMC

From: <[hidden email]>
To: <[hidden email]>
Subject: [Elecraft] W1 idea
Date: Tue, 12 Dec 2006 11:33:50 -0600

It would seem like you could combine the W1 with a small DDS based sig gen
for a very compact basic antenna analyzer. Is it sensitive enough on the
lowest scale to do that?
Just thinkin....
-Pete

Pete Axson
WD4LST
17901 NE 18th Ave
Citra, FL 32113

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[wd4lst]

Good evening and thanks for the reply. I have already built the AT1, so the K1 would work (My K2 is under construction at the present). I have an old MFJ259 (no vector info, just SWR and impedance), but had in mind a small unit for very coarse antenna checks in the field, camping, etc. The mfj unit is bigger than the K1. I have been playing with AmQRP's PICeL kits and had DDS on the brain. Itching to build something that uses one (Iknow,Iknow, a KX1 <gr>)
-Pete

>
> From: "Siu Johnny" <[hidden email]>
> Date: 2006/12/12 Tue PM 06:59:26 CST
> To: [hidden email],  [hidden email]
> Subject: RE: [Elecraft] W1 idea
>
>
> Hi Pete,
>
> K2 is a QRP rig and can deliver output power at around 0.5 watt.  Itself
> has already been a nice RF signal generator.  Turn your K2 power knot fully
> counterclockwise.  Press and hold 'tune' and read the SWR on the W1 over
> the tuning range.  Due to the lower power output from K2, interference to
> other Ham stations is minimal.
>
> Unlike the LP100, W1 is not a vector watt meter.  It can only give you
> reading of SWR and Power.
>
> In the past, I have several times in this reflector mentioned that a
> transcevier with TCXO or stable frequency output has already been a very
> good RF source. The trick is to use a good RF attenuator or directional
> coupler to lower the output level.  Now AT1, CP1 could be choices.
>
> I finish the construction of AT1 which is a piece of cake.  Unlike the
> usual attenuator obtained from the market, AT1 can tolerate 2 watts RF
> power.  If you combine K2 with AT1, the whole will be a nice RF signal
> source.  Of course, don't forget to turn the RF power knot fully
> counterclockwise.
>
>
>
> 73
>
> Johnny Siu VR2XMC
>
> From: <[hidden email]>
> To: <[hidden email]>
> Subject: [Elecraft] W1 idea
> Date: Tue, 12 Dec 2006 11:33:50 -0600
>
> It would seem like you could combine the W1 with a small DDS based sig gen
> for a very compact basic antenna analyzer. Is it sensitive enough on the
> lowest scale to do that?
> Just thinkin....
> -Pete
>
> Pete Axson
> WD4LST
> 17901 NE 18th Ave
> Citra, FL 32113
>
> _________________________________________________________________
> ??????????????  Live Messenger;
> http://get.live.com/messenger/overview 
>
>

Pete Axson
WD4LST
17901 NE 18th Ave
Citra, FL 32113

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