Hello Johnny,
Exactly! I'll be there (Tokyo big site) on 25-26th, almost at booth J-08.
I expected to touch KX3 there last year, but regrettably no information in
Japan.
At that time, I didn't forecast the 'X'mas order'.
Hope to see you there.
Jun JI1TLL
Date: Thu, 16 Aug 2012 06:52:11 +0800
From: vr2...@yahoo.com.hk
Subject: KX3 direct conversion system
To: ji1...@jarl.com
CC: elecraft@mailman.qth.net
Hello Jun, Will go to the Tokyo Ham Fair next week? I will be there next week.
I could possibly wonder around the A1 club, Tokyo International Amateur Radio
Association, Icom or JARL booths. TNX & 73,
Johnny VR2XMC
寄件人︰ 須崎 純一 <ji1...@jarl.com>
收件人︰ elecraft@mailman.qth.net
傳送日期︰ 2012年08月16日 (週四) 12:34 AM
主題︰ Re: [Elecraft] KX3 direct conversion system
Hi Matt,
Thanks for your quick response.
The function is sometimes effective especially in Tokyo.
The current consumption +10mA is not ignorable in outdoor.
Thank you again for useful information.
Jun, JI1TLL
> From: mzil...@magellangps.com
> To: ji1...@jarl.com; elecraft@mailman.qth.net
> Date: Wed, 15 Aug 2012 08:49:18 -0700
> Subject: RE: [Elecraft] KX3 direct conversion system
>
> Hi Jun,
>
> If you haven't tried it, set RX ISO to ON. This enables an isolation
> amplifier that keeps the LO greatly attenuated outside the KX3. The amp
> draws something like 10 mA, so use it only when you need it.
>
> 73,
> Matt Zilmer, W6NIA
>
>
> -----Original Message-----
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of ?? ??
> Sent: Wednesday, August 15, 2012 8:03 AM
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] KX3 direct conversion system
>
>
> Hi all,
> I built KX3 kit (S/N830) up last week after fixing some errors.
> As soon as trying some functions, I found it's really a direct conversion
> system. A weak leaked signal was observed with another receiver just on the
> watching frequency.
> In my boyhood, I built Mizuho DC-701 which was a copy model of Heathkit
> HW-7. DC-701 also adopted direct conversion system and my local
> station could detect my receiving point. The leaked signal from KX3 is
> not so strong as that of DC-701 and almost no problem.
> Direct conversion with DSP system will be possibly adopted in higher class
> transceiver.
> DC on 2m is interesting, however, challenging.
> So transverter is reasonable solution and I'm expecting the module again.
>
Many thanks for proposing the innovated equipment.
>
> The block diagram shows the transmission system is also 'direct conversion'.
> The local oscillating frequency seems to be basically equal to the
> transmission frequency.
> Is it correct?
>
> Just one more twitting. The optional microphone looks something a
> little cheap, because it's same as that of Chinese kit KN7Qa.
>
> Jun, JI1TLL
>
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