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Icom 7610 and 705 AM review...

Discussion in 'Amplitude Modulation' started by N2DTS, Oct 5, 2021.

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  1. N2DTS

    N2DTS Ham Member QRZ Page

    Mine sounds very grungy if you listen to it on a receiver that goes low in frequency response.
    VERY grungy, but if you remove the lows in the receiver it sounds ok.
    There are lots of much better sounding radios on both rx and tx.
    For the same price, you can get a Flex 6400M that sounds as good as anything on the air both RX and TX.
    Even an old Flex 3000 ($600.00) or 5000 ($800.00) sound much better.
    Worked someone with a new FTdx 10 today that sounded good, not hifi but good.
    The Xiegu G90 sounds better!

    I really like the user interface and the display on the 7610, the audio is garbage both ways, but its the best audio from Icom yet.




     
  2. N3FAA

    N3FAA XML Subscriber QRZ Page

    LOL!!! Now you're just being silly. The 7610's audio runs circles around the 6400M, and every other radio you mention. Perhaps you are just using a horrible microphone and speakers?
     
  3. N2DTS

    N2DTS Ham Member QRZ Page

    I can tell you have never owned a good sdr.
    The Flex (all of them) the Anan (all of them) can do 10 Hz to 20,000 Hz on transmit and receive if you set them that way.
    The 7610 seems even more limited then the 7300 in that it does not seem to pass anything below 100 or 200 Hz on TX, and nothing above 2900.
    An analog telephone over copper wires would do 100 to 3400 Hz!

    The 7610 only allows bass and treble control on AM, no bandwidth adjustment at all.
    I have been told my Icom 705 sounds better then the 7610, and I think it does.

    I take the audio out of all the receivers and put it into a Marantz hifi audio amp into a big Marantz 3 way speaker and also use
    JVC headphones.

    The 7610 is NOT a good AM rig. It can do AM, but its not good at it, nor is the 7300 or the 705.
    No sync detection, or selectable sideband on sync AM detection, very limited frequency response RX and TX, no drag and drop filter width using the mouse, etc.

    I can tell you have a lot invested in your 7610.
    Its ok on ssb, its easy to use and attractive, it has a lot of ins and outs, its not cheap though.
    I worked a Yaesu ftdx 10 which sounded good, and has a wider response and menu selections to set the bandwidth on AM and the other modes.
    It cost about half of what the 7610 cost but has that Yaesu menu fun...


     
  4. AG5CK

    AG5CK Premium Subscriber QRZ Page

    Do you know the bandwidth specs on the ftdx10? It was a shame that the ftdx1200 could transmit 4k ssb but was limited to 6k AM.
     
  5. N2DTS

    N2DTS Ham Member QRZ Page

    Now its 50 to 3000 from what he said, but they may increase that in future revisions of firmware.
    They did that with another Yaesu he had.
    He said you can set the bandwidth limits, on the low side its 100Hz so I assume it goes lower than that, and you can pick 100, 150, 200 etc.

    I don't have a problem with 3000 Hz myself but I think 4000 or 5000 would be nice to be able to do, along with down to 50 Hz.
    You can always cut or limit the response to suit but it should be available.....
    What I call real sdr's allow that, you can pick the response limits by the cycle plus EQ it with a 3, 10 or 20 band equalizer, all built in the radio.
    You can also have profiles pre set, 50 to 5000 for hifi empty band, 100 to 3500 for tighter situations, 300 to 2700 for ssb, whatever you want.
    That includes the EQ settings as well.

    One thing I do NOT like about the FTdx 10 is there is no averaging of the spectrum display and it always looks frantic.
    Easy to add in firmware, but they have not done it yet.
    The FTdx 10 is 3rd on the Sherwood list which is fine, and it sells for $1600.00.
    One antenna port, but it does have a dvi output for a bigger screen if you want.
    The 7610 screen (and the 6400M) is big enough to not need a bigger screen for me.




     
    AG5CK likes this.
  6. N3FAA

    N3FAA XML Subscriber QRZ Page


    I have owned two Flex radios. Hated both of them and no longer own them. I liked the display, but that was about it. I have actually never owned an Icom before the 7610, and was hesitant to buy one. I have always used Yaesu. I bought a 7610 and 7300 (that's my digital only radio), and love them both.

    I have a lot invested in my 7610? Not really sure what you mean, but it was pocket change. I have a 7610, a good speaker, and the SM-50 mic. I get regular reports of "studio quality audio," even recently unsolicited from one of the well-known big guns in a recent contest. I'll take that! I have heard it on the other end, and it does sound amazing. I can't achieve anywhere close to that sound on the other radios.

    At the end of the day, nobody cares about AM anymore, quite frankly. It's a mode for old dinosaurs in this hobby. I am largely a DXer and contester, and AM ragchewing is not remotely a concern of mine. However, in my testing, my 7610 outperformed all the others on AM, hands down.
     
  7. WA3VJB

    WA3VJB Ham Member QRZ Page

    Thanks for clarifying your credentials.
    Taken at face value.
     
    WZ5Q likes this.
  8. AG5CK

    AG5CK Premium Subscriber QRZ Page

    Cool story.
     
  9. N2DTS

    N2DTS Ham Member QRZ Page

    As you say, the audio is good for contesting, not good fidelity.
    200 to 2900 is not good fidelity and AM operators want better then that and Flex and Anan offer much better.
    They can actually sound better then AM or FM broadcast.

    Kenwood and some Yaesu's do much better then the Icom radios.
    The 7300, 705 and the 7610 are the first Icom's in memory that manage to modulate without the ALC making the carrier
    jump around, so that is an improvement.

    Its just silly to think anyone will think the Icom's sound better then radios that have a wider response and built in 10 or 20 band EQ and other broadcast audio tools.
    What you think is good is that they sound a little better then other communication audio ham radio offerings.

    Also, ssb is a defunct mode, we used it in the telecom industry 45 years ago before replacing it with digital, no one uses ssb anymore but hams.

    I know you have a lot invested in your 7610 as you get upset if someone points out it is not the worlds best radio.
    I think it has a lot of flaws/limitations and will say so because its just a radio to me.
     
    W3SLK likes this.
  10. W2VW

    W2VW Ham Member QRZ Page

    I have yet to hear about a front panel display failure from an old AM rig.
     
    WA3VJB likes this.

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