[Elecraft] K4 full duplex?

[Joe Subich, W4TV]

On 2019-05-17 11:43 AM, Edward R Cole wrote:
 > I suspect not because only one ANT connector is designated VHF/UHF.

Look more carefully ... it appears that the XVTR IF IN jack is also
marked "V/U ANT 2".  Might be enough to allow duplex on 144/432.

In addition, the rear panel marking does not designate ANT 4 as
VHF/UHF only so perhaps a software upgrade will allow use of other
antenna jacks for VHF/UHF.

<https://swling.com/blog/1c279a0e-ee1e-478f-8505-5fce675fb70a/>

73,

    ... Joe, W4TV


On 2019-05-17 11:43 AM, Edward R Cole wrote:
> I suspect not because only one ANT connector is designated VHF/UHF.
> 
> The dual-conversion K3/K3s has only one DSP so could not do duplex.  K4 
> is direct-conversion so guess its "maybe".  One of the three HF/6m ANT 
> would need to be co-opted for Tx.  Duplex would really compete with the 
> new IC-9700 for mainstream satellite.  1296 ext transverter would still 
> be required if that band was wanted.  15w is fine for satellite and 
> driving amps if more power is desired.
> 
> My K3//10 with two Rx works well on 2m-eme with dual-polarity diversity 
> reception using MAP65 and since I do little HF, I'm satisfied with it.
> I run 144/28, 432/28, 1296/28 transverters with it.  Also 3400/144 and 
> 10,368/144 thru an intermediary 144/28.  And drive a 100w amp with 1mw 
> on 630m.
> 
> Like I said before: "only if I win the lottery".  Then I would have both 
> K4 and KPA1500 in SO2 with my K3 (haha).  And the K4 would have remote 
> capability when I travel away from home (maybe using my iphone).
> 
> But the K4 is a handsome looking rig!  Guess who win's the Hamvention 
> "award" for new stuff?
> 
> Congrats Wayne & Eric & Co.
> 
> 73, Ed - KL7UW
> 
> 
> Date: Fri, 17 May 2019 07:34:24 -0400
> From: "kb2mjeff at att.net" <kb2m at arrl.net>
> To: <elecraft at mailman.qth.net>
> Subject: [Elecraft] K4 full duplex?
> 
> The question of the day on the AMSAT group is.
> when will the 2m 70cm module  be available, and also is it going to be
> fullduplex ?
> 
> 73 Jeff kb2m
> 
> 
> 73, Ed - KL7UW
>    http://www.kl7uw.com
> Dubus-NA Business mail:
>    dubususa at gmail.com
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