Elecraft K4

Discussion in 'Ham Radio Discussions' started by W6RZ, May 16, 2019.

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  1. K1VSK

    K1VSK Ham Member QRZ Page

    Whoever said the British have a knack for understatement wasn’t exaggerating:)
     
    N2EY likes this.
  2. KM1H

    KM1H Ham Member QRZ Page

    Looked at it that way it was a loaded question not deserving of an answer. It would also have given you a platform for one of your infamous non stop OCS events.

    This describes you to a T:

    A person with oppositional conversational style is a person who, in conversation, disagrees with and corrects whatever you say. He or she may do this in a friendly way, or a belligerent way, but this person frames remarks in opposition to whatever you venture.

    For those new to your games here is some good reading:
    https://psychcentral.com/blog/the-psychology-of-oppositional-conversational-style-ocs/
     
    WN1MB and W3KHG like this.
  3. W1BV

    W1BV Ham Member QRZ Page

    "As for Ten Tec....the last new full-feature rigs from TT were the Omni-VII and Orion II. Both designs are from the early-mid 2000s, making them over a dozen years old. And TT isn't making them any more. TT itself is in.....recovery."

    T-T debuted the Omni 7+ in Xenia. Hopefully available soon...
     
    KA0HCP, WD4IGX, K8AI and 2 others like this.
  4. KM1H

    KM1H Ham Member QRZ Page

    The K3 is getting pretty old, late 2007 delivery, and unobtainium parts may be driving the decision.

    Carl
     
  5. KM1H

    KM1H Ham Member QRZ Page

    Based upon performance so far you are doing fine without anyone elses help.

    Amazingly in deep denial. He should go over all posts, letter by letter and maybe with someone helping, and show where anyone has accused the ARRL of changing lab results to make advertiser’s rigs appear better than they are. That implies falsification which has not been claimed by anyone but his self.

    Please explain your problems with Post 115?
     
    NL7W likes this.
  6. KM1H

    KM1H Ham Member QRZ Page

    What does that have to do with anything in this forum???
     
  7. AD0HT

    AD0HT Ham Member QRZ Page

    back on track...

     
    AB2YC and NL7W like this.
  8. N0TZU

    N0TZU Platinum Subscriber Platinum Subscriber QRZ Page

    Back OT,

    Reading about the K4 on the Elecraft website, some interesting info. It can operate as a DSP radio or a hybrid. It will be modular per usual Elecraft, and offer upgrade paths and even extendability for future developments.

    https://elecraft.com/pages/k4-pre-order

    The K4 and K4D, like other “pure” direct-sampling radios, do not require crystal roofing filters. Digital signal processing is used to provide advanced demodulation, filtering, and signal display. The K4HD can operate either in direct-sampling or superhet mode. Typically the latter is only needed in the presence of extreme signals.

    There are three basic varieties, DSP, DSP with diversity receive, and DSP plus superhet:

    There are three K4 models to choose from: the basic K4; the K4D, which adds diversity receive capability; and the K4HD, which goes a step beyond other direct-sampling SDRs, adding a dual superhet module for the ultimate in blocking and close-in dynamic range.

    A basic K4 can be easily upgraded to a K4D at any time by adding the KDIV4 option.

    Similarly, a K4D can be upgraded to a K4HD by adding the KHDR4.

    The K4 and K4D, like other “pure” direct-sampling radios, do not require crystal roofing filters. Digital signal processing is used to provide advanced demodulation, filtering, and signal display. The K4HD can operate either in direct-sampling or superhet mode. Typically the latter is only needed in the presence of extreme signals.

    Specs:

    STANDARD FEATURES

    Size: 4.5”H x 13.5”W, 10” D
    Weight: Approx. 10 lbs
    Supply Voltage: 12-15 VDC
    Current: ~2 A RX, ~18-23 A TX
    Frequency Range: 100 kHz - 54 MHz (VHF/UHF range to be determined*)
    Stablility: +/- 0.25 ppm (TCXO)
    Modes: CW, SSB, AM, FM, Data
    LCD: 7” color; touch & mouse control
    Text modes: CW, PSK31/63, RTTY
    KAT4 ATU: 10:1+ range; 3 ant. jacks
    RX antenna sources: Up to 5
    A-to-D Converter(s): 16 bits
    I/O: USB-A x3, USB-B (two virtual com ports + audio), RS232 (DE9), Ethernet, HDMI. front/rear mic, front/rear phones, LINE in/out, speakers, PTT in, KEY out, paddle, key, ACC,12 V out.
    CW QSK: Silent, PIN-diode switched
    Other: RX/TX EQ, real-time clock,100% remote control including panadapter data, remote antenna switch control*, custom in-box software apps*​

    VHF/UHF module is planned also.

    There are extensive remote control features.

    The radio is run with Linux and the FAQs say that they intend to provide an API for application developers.

    A kit version (like K3/K3S) will be available later.

    Lots more info at the link posted above.
     
    KB2SMS, KA0HCP, NL7W and 2 others like this.
  9. WD4IGX

    WD4IGX Premium Subscriber QRZ Page

    Yup, my FT-990 works great, the more so since I scavenged eBay and found both the 2.0 khz SSB filter and the 250hz CW one so it's full now. :)
     
  10. WD4IGX

    WD4IGX Premium Subscriber QRZ Page

    I remember when it came out. I immediately said "that thing...is not a radio, it's an abomination" and some friends started calling it the "abomno-rig." I also accused it have using an internal monkey brain on life support. Ok I have an odd sense of humor but ... it was ahead of its time!
     
    KB2FCV and NL7W like this.
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