[TenTec] Omni VII Speech Processor Question

[Robert Mcgraw]

My measurements indicate the internal processor can increase average
output as much as 12 dB.  Typical at 45% is 6 dB to 8 dB average
increase.

73
Bob, K4TAX

> I've kept the 715 to use with my OMNI-VII.  I also have a FLEX-1500 as
> sub-receiver of the OMNI-VII using the N4PY modification and DXLab
> Commander
> to slave it.  The FLEX-1500 has a panadapter mode with peak hold option
> which I use to capture and compare the power distribution in the
> transmitted
> envelope of the OMNI-VII.
>
> The TT-715 speech processer is of course a RF-clipper, external to the
> radio.  It may not sound pleasing, but it can increase the average power
> in
> the transmitted (RF) envelope by six dB and get through QRM or poor
> propagation.
>
> The internal speech processing of the OMNI-VII being an AF compressor
> cannot
> increase the average power by that much, but it does help you get
> through.
>
> See http://www.sm5bsz.com/dynrange/dubus405/dubus405.htm for an unbiased
> explanation.
>
> I will send png graphics of various microphones and processing methods
> used
> with my OMNI-VII and captured with my FLEX-1500 in panadapter mode direct
> to
> those requesting same.
>
> 73 ES DX,
> Gary -- AB9M
>
> -----Original Message-----
> From: d.e.warnick at comcast.net
> Sent: Friday, March 15, 2013 6:37 AM
> To: Discussion of Ten-Tec Equipment
> Subject: Re: [TenTec] Omni VII Speech Processor Question
>
>
>
> I had the 715 with my Omni VI+'s and loved it. When I got the Omni VII, I
> used the internal processor (only 10%) and I get so many unsolicited
> comments on the audio during contests and while working DX, that I sold
> the
> 715. I believe the internal processor is RF based, but either way, the
> other
> stations love the audio enough to comment on its quality.
>
> And all this from a guy who doesn't really like SSB, but much prefers CW.
>
> For me, TenTec does it all very well.
>
> 73
>
> Dave
>
> WA3F
>
>
>
> ----- Original Message -----
>
>
> From: "Richards" <jruing at ameritech.net>
> To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
> Sent: Friday, March 15, 2013 3:54:22 AM
> Subject: Re: [TenTec] Omni VII Speech Processor Question
>
> Interesting -
>
>         Stan at TenTec HQ says the Omni VII built-in
>         speech compressor uses "AF Based"  compression.
>
> And... yet...
>
> Page 31 of my owner's manual states:
>
>         "The speech processor used in the Omni VII is a
>         DSP generated RF compressor.  ... RF Compression
>         raises the average output power... with a digitally
>         generated RF speech processor... we have the
>         advantage of calculating the RF envelope before
>         modulation is performed..."
>
> Page 38 Specifications says:
>
>         "Speech Processor:  RF compression,  0-9 adjustment."
>
>
> So... perhaps one might understand how I came to wonder about this.
> The phrases,   "DSP generated RF compression"  and  "RF compression"  do
> not exactly sound like  "AF compression"   to me.
>
> ;-)
>
> Parenthetically... I paid my dues and purchased the Model 715 when it
> first came out.  I was just wondering if it was redundant, if the Omni
> VII function was, in fact, RF-based at it sounded (to me, anyway) in the
> owner's manual.
>
> THANKS AND HAPPY TRAILS.
>
> ----------------- JAMES - K8JHR ----------------------------
>
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>