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Posted by Jim Naughton on 16th Jul 2014
I originally read about r.f. envelope clipping as a very effective intelligibility enhancing speech processing method in the ARRL Single Sideband for the Radio Amateur Handbook in the 1970's - but, although I am a "hands-on" type who likes to build stuff myself, I never found the time to build such a system. Consequently, when Ten-Tec brought out the Model 715 Speech Processor, based, I believe, on ideas put forward by Harold Collins (W6JES)in the Jan. 1969 edition of QST, I decided to purchase one in 2010. Not having very much backyard space,I normally run 100W-200W into a 43ft. homebrew vertical using an MFJ remote base tuner, and even though my signal reports from dx stations may not be very high at times, I very often get comments regarding my "good audio" which appears to get through despite very often having a weak signal.
My original Ten-Tec 715 purchased in 2010 is normally used at my VE3EIA location, but I have just purchased another Ten-Tec 715 in 2014 for use at a holiday QTH in Ireland (using my EI9BD call, and also with a vertical antenna and MFJ remote base tuner).
73 - Jim VE3EIA
Posted by Rip Noel on 25th Jan 2014
I never expected the repeated kudos, especially in the harried rush of a contest, that I received after installing my TEN-TEC RF Speech Processor but that is exactly what happened. Not just once or twice either. I've never received "really great audio" complements before and was surprised to hear this again and again.
My only regret now is that I made this equipment purchase decision as one of my last and not my first. It seems that one of my least expensive equipment purchases has made one of the largest improvements in my broadcast audio.
Posted by Dave, W9cmd on 22nd Nov 2013
Absolutely the very best speech processor available. Forget your on-board processor and get one of these. I've used mine with a number of radios, TT 626, TT Scout, TT Omni VII, TT Omni VI, TT Eagle. Also used with an Icom 7200. Hook it up correctly is the first key. Second, NEVER allow the display to go beyond 3 bars, and typically adjust the gain to only show two bars. Your audio with be clean and sharp. Adjustment of the rear output is also critical. First adjust the rig mic gain with the Processor OUT, then switching to processor IN, adjust the rear processor output gain to match the audio input of the rig when the processor was out. You will not be sorry. It will improve ANY brand radio, and TT can help you with the right cables and adapters to get you up and running.
Posted by Doug, W0CVF on 14th Apr 2013
I've had my 715 for about 3 yrs now working with my FT-950, and absolutely love it. Like W1DXH's review, I have nothing but good things to say about it. I have had many 53 sig rpts. Have gotten thru many, many pile-ups running 95W into a Cobra Ultralite Jr. wire antenna. When I ask about my voice quality, I inevitability get fine rpts. QST's review was right on target.
Posted by Bill N7AG on 11th Oct 2012
Use with Omni VII, better than built-in processor, easy to set up, can be used with other rigs.
Posted by John on 7th Sep 2012
Bought this new at the Orlando, Florida Hamfest from Ten-Tec. Was told I could use with my older Icom, just follow the instructions.
Hooked it as per manual including jumper. Set controls as directed. Has never ever worked.
Pass it by with other rigs (i.e. older Icoms)
Posted by Randy Moore, AI4CO on 2nd Jul 2012
Raises the average power of my TenTec Eagle to almost 100 watts. Does very well on DX and most people do not realize that I am using a RF Speech Processor until I mention it. I have made a lot of DX contacts using this speech processor with my Eagle and now I think I will sell my amplifier.
Posted by steve KB9RDS on 16th Nov 2011
I use this unit with my Omni 7 and my ft-847 works as it should, wished the instructions were a bit more in depth. It is a keeper...
Posted by steve W1DXH on 24th Oct 2011
Purchased for use with my Orion 565 and have been pleased with the results.You can visually see the difference on the watt meter between the unit on and off. It does exactly what they claim and on the other end they can hear the difference. Completely satisfied with the results.