[Elecraft] New radio , new display

[Matt Zilmer]

Interesting. At first glance it appears to have some disadvantages 
compared to the Elecraft KX3. Regarding portable use:

   - 450 mA in RX mode (more than 2.5X that of the KX3)

   - no 6 meters

   - no 2 or 4 meter option

   - no built-in ATU

   - no indication of a built-in battery pack or charger

   - no CW/data message buffers

   - no mention of a KX3-comparable set of frequency memory features

   - no CW/PSK/FSK decode/encode

    - no paddle-based internal PSK31/63 or FSK transmit

    - no APF (a killer KX3/KX2 feature for digging out weak CW signals)

    - no attached keyer paddle option

Missing KX3 features, or performance questions:

    - 160 meter TX

    - AM transmit

    - direct frequency entry

    - programmable function switches

    - voice-mode DVR

    - dual watch

    - no indication of blocking dynamic range at any spacing

    - no mention of roofing filters

    - no statement regarding transmit phase noise

The 0.5 ppm spec for the optional TCXO is +/- 15 Hz on 10 meters.  The 
currently shipping KX3 with extended temperature compensation (no $) is 
more like +/- 0.1 ppm.

RX and TX performance are unknown (you probably get what you pay for in 
terms of ADC and DAC). One red flag is the serial data connector, 
located directly adjacent to the BNC antenna jack. This would simply not 
work if you were using a wire antenna attached directly to the radio, as 
is possible with the KX3 and KX2.

The spectral display is a nice feature, but it appears to be about 0.5" 
x 1.5", which is less than a tenth the size of the PX3's spectral 
display. This is virtually unusable, either in the field or at the home 
QTH.  The PX3 has many direct controls, waterfall AND spectrum display.

73,

matt W6NIA



On 6/1/2017 5:19 PM, Merv Schweigert via Elecraft wrote:
> All the messages pro and con for a new display on the K3 etc,
>
> Here is a new one for ya in the QRP class
>
> http://www.dxzone.com/rs-918ssb-hf-sdr-transceiver/
>
> Dont know if its more than a crystal set, dont know if it even works
> looks like copies of a several radios,  priced where you can buy it and
> love the display if nothing else,
> Not going to buy one,  no interest,  just thought it may be what those
> who dont care about performance and only looks may be looking for.
>
> Merv K9FD/KH6
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-- 
"A delay is better than a disaster."
-- unknown

Matt Zilmer, W6NIA
[Shiraz]