There is another caveat to keep in mind when using the K3 in
transverter mode. Sensitivity will be subject to the ham band
BPFs, so a preamp may be needed if the "IF" freq. falls well
outside the BPF passband unless a general coverage module (KBPF3)
is installed. The KBPF3 works fine if the KXV3
There is another caveat to keep in mind when using the K3 in
transverter mode. Sensitivity will be subject to the ham band
BPFs, so a preamp may be needed if the "IF" freq. falls well
outside the BPF passband unless a general coverage module (KBPF3)
is installed. The KBPF3 works fine if the K
It would be even easier if one could use a 10MHz IF for LF. For this the K3
and KX3 (when the code is written) xverter settings could be set to
XVRF=0MHz XVIF=10MHz. This way the accurate 10MHz reference, already applied
to the reference input to the K3 could be used as the local oscillator in
the
external transverter
Dave
G4fre
Date: Thu, 6 Sep 2012 08:02:50 -0700
From: Wayne Burdick
Subject: Re: [Elecraft] 472KHz/500KHz
To: Edward R Cole
Cc: Elecraft@mailman.qth.net
Transmit is not presently allowed below 160 m since low-pass filtering
would not be adequate. We'd have to provi
Edward R Cole wrote:
> I tried keying the KX3 at 495 and 508 KHz and get BND END warning
> (probably because it is below edge of 160m). How do you defeat the
> out of band restriction?
Transmit is not presently allowed below 160 m since low-pass filtering
would not be adequate. We'd have to pr
I did an experiment with 600-meter transceive on the KX3 (around 500
kHz). With the ATU installed, which provides additional filtering for
the broadcast band, the transmitter put out about 0.5 to 1.0 watts.
But additional low-pass filtering would be required, and as noted
above, receiver sensitivit
Wayne,
Please can you make the KX3 RX front end circuit diagram available, possibly
with the PCB mask, even if only personally? I am convinced it must be
possible to bring the 472/500 signal in and bypass the filtering. I already
have used with considerable success a 7 pole filtering on other SDR
Matt Maguire wrote:
>> Therefore, the KX3 is not really usable below around 1500kHz.
I wrote:
> It is usable for receive, but not for transmit.
>
> The high-pass filter starts rolling things off around 1.3 to 1.5
> kHz
Er, that's "MHz".
Wayne
___
Did you read in that article how a KXV3 module is used in the K3 to
bypass the high pass filtering used to protect the T/R PIN diodes?
The KX3 has the same filtering, but no possibility for a KXV3 module.
Therefore, the KX3 is not really usable below around 1500kHz.
If you want to get onto the
Dom, M1KTA, writes: "Anyone tried the K3 option with a KX3 on 472/500KHz yet?
http://www.elecraft.com/TechNotes/k3qtx_v2_pa3cw.pdf
Will be trying but interested to hear anyone's success/failure stories.
---
Dom,
I have been running my K3/10 on 495-510-KHz for over a year. I run
in the TES
Matt Maguire wrote:
> Did you read in that article how a KXV3 module is used in the K3 to
> bypass the high pass filtering used to protect the T/R PIN diodes?
> The KX3 has the same filtering, but no possibility for a KXV3
> module. Therefore, the KX3 is not really usable below around 1500kH
Matt, yes understood, transverter needed...but with KX3 not seen a circuit
diagram yet, block diagram yes... wonder why that is still secret
squirrel however I wonder if the offer from Wayne for the 160m IF went
anywhere. I read that the KX3 is 'deaf' if you go through the normal RX
chain at MF
Did you read in that article how a KXV3 module is used in the K3 to bypass the
high pass filtering used to protect the T/R PIN diodes? The KX3 has the same
filtering, but no possibility for a KXV3 module. Therefore, the KX3 is not
really usable below around 1500kHz.
If you want to get onto the
Anyone tried the K3 option with a KX3 on 472/500KHz yet?
http://www.elecraft.com/TechNotes/k3qtx_v2_pa3cw.pdf
Will be trying but interested to hear anyone's success/failure stories.
72
Dom
M1KTA
--
View this message in context:
http://elecraft.365791.n2.nabble.com/472KHz-500KHz-tp7562101.ht
14 matches
Mail list logo
