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Radio Shack DSP-40: A Review

    http://www.redwaveradio.com/11_82d22c285e228014_1.htm
    Radio Shack DSP-40: A Review. Filter, I stopped by a local Radio Shack today to see if they had one. The. to find it. It must have just arrived in the past couple of days. The list price was $79.99 and with the 10% discount, that dropped to $71.99. With 6% sales tax, the final price was $76.31.

Radioshack DSP-40 Realistic Audio Digital Signal Processor

    https://signaproce.com/dsp-40
    21-543 Radioshack Radio Shack Dsp Digital Signal Processor Audio Amplifier Speaker (49.6% similar) Radio shack dsp-40 dsp digital signal processor audio amplifier speaker new this unit is offered in new, unused condition. Shipping calculated based on buyers location.

Radio Shack DSP-40 Mod for Greater Headphone Volume

    https://www.qsl.net/ve3sma/DSP40HeadphoneVolumeMod.pdf
    Radio Shack DSP-40 Mod for Greater Headphone Volume Steve Kavanagh, VE3SMA October 2013 I found an old Realistic DSP-40 unit (Model 21-539) at a flea market recently. This is a basic DSP audio filter sold at Radio Shack some years ago. I found the headphone volume to be seriously lacking.

Radio Shack 21-543 Ham Radio DSP 40 Noise Reduction …

    https://www.ebay.com/itm/194468362789
    Details about Radio Shack 21-543 Ham Radio DSP 40 Noise Reduction Audio Filter (nice shape) 1 watched in last 24 hours. 11 product ratings. 4.6 average based on 11 product ratings. 5. ... Radio Shack DSP-40. This is an audio DSP and it works great on cw and ssb. Newer versions might be a tad better, but for the cost, nothing compares. X.

eHam.net

    https://www.eham.net/reviews/view-product?id=4630&page=2&per-page=10
    The RS DSP-40 is a simple, low cost digital signal processor audio filter. Like other audio filters, it reduces, but does not eliminate noise on the audio output of your receiver or transceiver. It is not as good as a Timewave DSP-zx, but you can generally get one for one tenth of the cost of the Timewave product.

Radio Shack 21-543 DSP 40 Noise Reduction Audio Filter …

    https://www.ebay.com/itm/324944935811
    Details about Radio Shack 21-543 DSP 40 Noise Reduction Audio Filter. ... “ Good working condition. ” Price: US $59.00. Radio Shack 21-543 DSP 40 Noise Reduction Audio Filter. Sign in to check out Check out as guest. Adding to your cart. The item you've selected was not added to your cart. Add to cart. Add to Watchlist Unwatch

N2CBU's Technical Information Resource

    http://n2cbu.n2cbu.com/mods/DSP40/DSP40mod.html
    Radio Shack DSP40 Modification. Unfortunately this simple audio DSP filter has several shortcomings, but the good news is that some can be corrected and some can be mitigated. I bought two of these filters to experiment with, one to modify and one to use as a reference, when Radio Shack closed them out.

REVIEW: Radio Shack DSP-40

    http://www.redwaveradio.com/7_68b5e4c8a3a3b5e5_1.htm
    REVIEW: Radio Shack DSP-40. by Randall Rh » Sun, 17 Apr 1994 07:09:08. Radio Shack now sells the DSP-40, a Digital Signal Processor. with a 5-watt audio amplifier and built-in speaker. The price. is $79.95 in the US. The catalog number is 21-543; you will. need that number when you call and ask if it's in stock, because.

Radio Shack DSP 40 noise reduction digital signal ...

    https://www.youtube.com/watch?v=F5PW1W42yUw
    Demonstration of 1995 Radio Shack DSP 40 noise reduction digital signal processor, on Palstar R30C receiver. Very useful for isolating CW/Morse code, especi...

Best way to add DSP to old radio | QRZ Forums

    https://forums.qrz.com/index.php?threads/best-way-to-add-dsp-to-old-radio.705673/
    the original rs dsp 40 is great. find one and plug it in. i have one mounted on top of a 450d and even added one for a while on my 7300 !! ... I could buy a Radio Shack or Timewave external DSP unit. I could buy one of these things: ... That's generally a better option than an audio DSP unit that sits outside the AGC loop and can only operate ...

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