[Elecraft] (no subject)

Fri Jul 5 15:23:50 EDT 2019

A bit off topic, but I thought I’d ask anyway.  Would using a HA1YA 6 meter transverter with the K3S improve performance on noise level reduction and sensitivity over the stock K3S?

73,

John
WA1EAZ

> On Jul 5, 2019, at 3:17 PM, Conrad PA5Y <g0ruz at g0ruz.com> wrote:
> 
> Hello Ed, the HA1YA and DB6NT transverters are also considerably better than the DEMI designs which are 3 generations behind. I have been in serious pursuit of low PN and low IMD on 144 and 432 and I found that either of the aforementioned transverters with a K3S were many times better than anything else. I looked at almost everything out there, it took 2 years but there really was no other choice. There used to be 3 choices but sadly the Anglian (144) and Iceni (432) kits from G4DDK are no longer an option, on 70cms I have an Iceni. With the K3S , Iceni and a TV TX I am achieving TX 3rd orders of -53dBc, I am so pleased with this. The composite noise @ 20kHz is 33dBc/Hz better than any other radio that I have measured. On 2m 25dB better for composite noise I am still working on 2m intemods, so far the whole chain is -40dbc 3rd orders but I would like to improve this by at least 6dB, the problem is an LDMOS driver and nothing to do with the K3S or HA1YA transverter.
> 
> I have a bit more to say about the K3S and TX IMD on 6m in another post.
> 
> Regards
> 
> Conrad PA5Y
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of Edward R Cole
> Sent: 05 July 2019 18:02
> To: Elecraft Reflector <elecraft at mailman.qth.net>
> Subject: [Elecraft] (no subject)
> 
> Kjeld,
> 
> I agree with Conrad PA5Y,  both Kuhne Engineering or  HA1YA make very good transverters and are available in EU.
> 
> I would add the DEMI L-series transverter which now is made by a company called Q5 (located in US) for any NA hams reading the mail on this topic.
> I use DEMI transverters on digital-eme on 144, 1296, and higher (have had 144,222, 432, 1296, 3456, and 10-GHz models).
> 
> I also use preamps located at antennas on 6m, 2m, 432, 1296+  Even though local electronic noise can be high at times, when its not they make a huge difference.  Only for 6m (50-MHz) would I agree that it might not give much help (but if you have a K3, it needs either a PR6 or other preamp to bring up 6m &10m sensitivity; not an issue with K3s or K4).  MY KX3 with internal preamp ON = my K3 + PR6 in sensitivity on 6m)
> 
> The early reports on the IC-9700 were not favorable for freq stability (though I read they had addressed this, lately).  Still investment in K3s + good transverter will beat the IC-9700 without a doubt.
> 
> 73, Ed - KL7UW
> 
> From: Kjeld Holm <kh at kh-translation.dk>
> To: Elecraft Reflector <elecraft at mailman.qth.net>
> Subject: [Elecraft] Digital modes on 144MHz only
> Message-ID:
>         <AM0PR03MB553863DE40CDE9D3F09EE28F9DFA0 at AM0PR03MB5538.eurprd03.prod.outlook.com>
> 
> Content-Type: text/plain; charset="us-ascii"
> 
> Digital modes on 144MHz only
> 
> I plan for a second station to use for digital modes on 144MHz only. 
> If you look at performance only (no price, no ergonomics, no use outside digital modes on 144MHz) what would you prefer
> 
> 1)   K3/K3S with internal transverter
> 2)   IC-9700
> 
> In both cases I plan to use a 1kW amplifier.
> 
> Vy 73 de OZ1CCM, Kjeld
> 
> 
> 73, Ed - KL7UW
>   http://www.kl7uw.com
> Dubus-NA Business mail:
>   dubususa at gmail.com 
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html Message delivered to g0ruz at g0ruz.com 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to jstengrevics at comcast.net 