[NSRCA-discussion] RX choices
Bill Glaze
billglaze at triad.rr.com
Fri Sep 15 12:37:04 AKDT 2006
Gee whiz, Georgie, I would have thought you were too old for her! Bill
----- Original Message -----
From: "george w. kennie" <geobet at gis.net>
To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
Sent: Friday, September 15, 2006 2:26 PM
Subject: Re: [NSRCA-discussion] RX choices
>
> Boy, I can't wait for that one !!!!!!! I used to date Hedi and she never
> mentioned anything about DSS to me. I guess it's always been on the
> hush-hush.
> G.
>
>
> ----- Original Message -----
> From: "Dean Pappas" <d.pappas at kodeos.com>
> To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
> Sent: Friday, September 15, 2006 11:34 AM
> Subject: Re: [NSRCA-discussion] RX choices
>
>
>> It's even wierder than that, and I am just too busy right now.
>> Later, I promise,
>> Dean
>>
>> Dean Pappas
>> Sr. Design Engineer
>> Kodeos Communications
>> 111 Corporate Blvd.
>> South Plainfield, N.J. 07080
>> (908) 222-7817 phone
>> (908) 222-2392 fax
>> d.pappas at kodeos.com
>>
>>
>> -----Original Message-----
>> From: nsrca-discussion-bounces at lists.nsrca.org
>> [mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of
>> dwaynenancy
>> Sent: Friday, September 15, 2006 11:29 AM
>> To: NSRCA Mailing List
>> Subject: Re: [NSRCA-discussion] RX choices
>>
>>
>> Yep, she had a patent on the method. It seems she got the idea while
>> playing a piano. Dwayne
>>
>> Dean Pappas wrote:
>>
>>> Even the latest Spektrum DSS system is just narrow-band FM!
>>> How that works is an even better story, especially because it involves
>>> Hedi Lamarr!
>>> later,
>>> Dean
>>>
>>>
>>> Dean Pappas
>>> Sr. Design Engineer
>>> Kodeos Communications
>>> 111 Corporate Blvd.
>>> South Plainfield, N.J. 07080
>>> (908) 222-7817 phone
>>> (908) 222-2392 fax
>>> d.pappas at kodeos.com
>>>
>>> -----Original Message-----
>>> *From:* nsrca-discussion-bounces at lists.nsrca.org
>>> [mailto:nsrca-discussion-bounces at lists.nsrca.org]*On Behalf Of
>>> *Bob Richards
>>> *Sent:* Friday, September 15, 2006 11:17 AM
>>> *To:* NSRCA Mailing List
>>> *Subject:* Re: [NSRCA-discussion] RX choices
>>>
>>> John,
>>>
>>> I'm not surprised the manufacturers keep the PCM information (like
>>> packet specification, operating parameters, etc) private. For
>>> one, that information could be considered a trade secret and they
>>> would not want competitors to know about it. On the other hand,
>>> they might be worried that a competitor would examine the data and
>>> discover some flaw or limitation in the technology and then
>>> publicly announce this fact. Still, I'm surprised no one has
>>> reverse engineered the PCM data stream from either JR or Futaba
>>> (maybe someone has, I just don't know).
>>>
>>> I'll take some issue with what you have said regarding the
>>> technology not changing since the '50s. I believe the '50s saw
>>> super-regen systems? After that, there was (is) super-heterodyne
>>> systems. Then, dual conversion and narrow band systems, as well as
>>> FM instead of AM. PCM was added (really nothing to do with the
>>> RF, just a data link added to the existing RF systems). I think
>>> the systems today are more reliable than in the 70s when I first
>>> started, and they are having to do this in a much more polluted RF
>>> environment.
>>>
>>> Still, I agree with you that, as a group (modelers in general), we
>>> have not done a good job demanding more from the manufacturers.
>>> For most, cost seems to be the big issue, but we don't look at
>>> cost in terms of the big picture, like "a cheap receiver will cost
>>> you a lot AFTER you buy it". Those of us that are competitors do
>>> a better job demanding more, IMHO.
>>>
>>> Bob R.
>>>
>>>
>>> */John Ferrell <johnferrell at earthlink.net>/* wrote:
>>>
>>> Although I fly Futaba I have a lot of respect for the JR
>>> receiver
>>> technology. It is the only thing new in receiver design other
>>> than the
>>> Futaba synthesized receiver since the early 1950's. The
>>> technology made the
>>> change to solid state but that was not taking advantage of any
>>> new design.
>>>
>>> I can assure you that Ham radio receivers have made steady
>>> progress during
>>> that time even as prices came down.
>>>
>>> The bigger problem is that we have no idea about the real
>>> specs on these
>>> receivers. The maintenance information is held very close and
>>> parts even
>>> closer. We have no idea how long it takes to cycle in and out
>>> of fail safe
>>> let alone any control over it. In fact we have no real
>>> indicator of failure
>>> thresholds. George Steiner has done a lot of work in this area
>>> such as his
>>> "missing frames" detector but his work has been hampered by
>>> lack of
>>> published specs by the manufactures with PCM.
>>>
>>> I had hopes of improvements when HiTec swallowed Multiplex but
>>> it seems to
>>> me they have only used the acquisition to leverage their
>>> efforts to become
>>> another Futaba/JR/Airtronix.
>>>
>>> We have not been demanding customers and we have put way too
>>> much faith in
>>> letting the suppliers make decisions for us!
>>> John Ferrell W8CCW
>>> "My Competition is not my enemy"
>>> http://DixieNC.US
>>>
>>> ----- Original Message -----
>>> From: "Ed Alt"
>>> To:
>>> Sent: Thursday, September 14, 2006 5:02 PM
>>> Subject: Re: [NSRCA-discussion] RX choices
>>>
>>>
>>> >
>>> > Yep, I've been flying JR single conversion ABC&W sine the
>>> late 90's in
>>> > quite
>>> > a number of different locations around the country and have
>>> never, not
>>> > once
>>> > had the slightest indication of a problem. Lot's of time
>>> with ignition
>>> > systems too. Must be some other cheesy single conversion
>>> receiver?
>>> >
>>> > Ed
>>> >
>>>
>>>
>>> _______________________________________________
>>> NSRCA-discussion mailing list
>>> NSRCA-discussion at lists.nsrca.org
>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>
>>>
>>>------------------------------------------------------------------------
>>>
>>>_______________________________________________
>>>NSRCA-discussion mailing list
>>>NSRCA-discussion at lists.nsrca.org
>>>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>
>>>------------------------------------------------------------------------
>>>
>>>No virus found in this incoming message.
>>>Checked by AVG Free Edition.
>>>Version: 7.1.405 / Virus Database: 268.12.4/448 - Release Date: 9/14/2006
>>>
>>>
>> _______________________________________________
>> NSRCA-discussion mailing list
>> NSRCA-discussion at lists.nsrca.org
>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>
>> _______________________________________________
>> NSRCA-discussion mailing list
>> NSRCA-discussion at lists.nsrca.org
>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>
>>
>
> _______________________________________________
> NSRCA-discussion mailing list
> NSRCA-discussion at lists.nsrca.org
> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>
More information about the NSRCA-discussion
mailing list