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Microphone setting PR-781

Bob
Bob Member ✭
in FLEX-6000 Signature Series
Recommended settings for Heil PR-781 and FLEX 6000

Answers

  • Jean_Luc F5JRC
    Jean_Luc F5JRC Member ✭✭
    slide747.jpg

    something like that here, but obviously it depends on a lot of criteria… (screenshot from SmartSDR for Mac).

  • Erika - KØDD
    Erika - KØDD Member ✭✭

    Jean-Luc I'd say that's a pretty safe group of settings for most microphones. For mics with more brilliance dial back the 1-4K boosts, for mics with more bottom end either reduce or go flat with the bottom end.

    I have an INrad M629 on this 6500. 63hz is useless for anything, my 125, 250 are flat and then I boost about like your Mic Jean.

    If one hung a D104 on the radio (with matching of course). The curve would be much more different. But Dynamics, and Condensers one would be quite safe with this sort of curve. For DXING I just flip on the processor then. Have a nice day.

    Erika DD

  • Jean_Luc F5JRC
    Jean_Luc F5JRC Member ✭✭

    Erika I must admit that I no longer use the PR781 too much (which is a very good microphone) but I use a very inexpensive headset connected to the Flex6500 which leaves my hands free, which does not compress my ears and isolates me well from ambient noise (but not too much!), and I have not yet had a complaint about the quality of my transmissions! :-)

    https://www.amazon.fr/dp/B075F16DNX?psc=1&ref=ppx_pop_dt_b_product_details

    73' Jean-Luc / F5JRC

  • John KB4DU
    John KB4DU Member ✭✭✭

    I would be cautious with that much boost at 4K, especially with a transmit bandwidth upper limit of 3k or similar. This could generate peaks that could be clipped by the transmit filter, creating harmonic distortion. Consider sliding all the freqs down so that the 1k 2k are flat, so it is the same shape curve. General rule is to cut before boost. Can’t boost what isn’t there.

  • Patrick
    Patrick WH6HI KauaiMember ✭✭✭

    Using the radio set up for Full Duplex, is a great way to figure out your microphone behavior and get a great sound, that satisfies the operator. Search for the procedure it is well documented. I use a Shure SM7B and using the FD technique made some well appreciated adjustments in all the audio chain adjustments. One in particular that caused distortion and others that made the sound really sweet.

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