[TenTec] RX366

Tue May 21 11:41:53 EDT 2013

One thing to remember on the original Orion sub-receiver is if you turn 
on the attenuator for the sub, you can eliminate most overloading.

Carl Moreschi N4PY
121 Little Bell Dr.
Hays, NC 28635
www.n4py.com

On 5/21/2013 11:23 AM, Kim Elmore wrote:
> This is prettying how I use it, too. The main rx has the arsenal needed to handle hearing the DX. I only have problems when the pile is filled with nearby, strong signals and the DX is working someone with a weal signal at my QTH. I may not hear that guy and so don't know the freq of whoever the DX is working.
>
> Kim N5OP
>
> "People that make music together cannot be enemies, at least as long as the music lasts." -- Paul Hindemith
>
> On May 20, 2013, at 19:13, Rsoifer at aol.com wrote:
>
>> Right on, Duane.  If  the sub rx doesn't copy the DX well,  then I flip
>> around and do it your way.
>>
>> 73 Ray W2RS
>>
>>
>> In a message dated 5/20/2013 11:41:16 P.M. GMT Standard Time,
>> ac5aa1 at gmail.com writes:
>>
>> Sounds  like you got it right, Ray.  I have a slightly different view.   I
>> find the stock subRX to be fine for DXing because I use the MainRX to
>> listen
>> to the DX.   After all, he's the one getting clobbered by  the cops,
>> tuner-uppers, QRMers, etc.  The SubRX is great for finding  who's calling
>> him
>> and where the pileup is.  Any more, it seems the  worst place to call is on
>> top of the last worked station because you and 20  others are in that same
>> spot.  The SubRX is great for lining up the  Transmit VFO in the pileup, I
>> find.
>>
>> For what it's worth - we all do  it our own way!
>>
>> 73, Duane
>>
>>
>> Duane Calvin,  AC5AA
>> Austin,  Texas
>> www.ac5aa.com
>>
>>
>>
>>
>> -----Original  Message-----
>> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf  Of
>> Rsoifer at aol.com
>> Sent: Monday, May 20, 2013 2:08 PM
>> To:  tentec at contesting.com
>> Subject: Re: [TenTec] RX366
>>
>> Hi  all,
>>
>> Since I started this thread a few days ago, let me try to  summarize where
>> we are.
>>
>> John Henry says that the RX366 is  essentially the Eagle receiver, while
>> the
>> stock Orion/Orion II sub rx is  essentially the Jupiter receiver.  Rob
>> Sherwood's tests show  that the Eagle receiver is almost as good as the
>> Orion
>>
>> II main rx,  inside the ham bands.  I can't find where, or if, Rob  ever
>> tested the Jupiter but you can go to the TT web site and  download  the
>> specs.
>> Barry tested the two sub receivers and found  that  the RX366 was much
>> better
>>
>> inside the ham bands but the stock  unit was much  better in the 9 MHz SWL
>> band as well as in the AM  BCB.
>>
>> Do you need the RX366?  If you are a serious contester, or if  you have  an
>> active ham next door, then probably yes.  If not,  then the stock unit is
>> probably good enough, especially if you do  any listening outside the ham
>> bands.
>>
>> Did I get it  right?
>>
>> 73 Ray W2RS
>>
>>
>> In a message dated 5/20/2013 2:22:57 P.M.  GMT Standard Time, Rick at DJ0IP.de
>>
>> writes:
>>
>> John,  there  were two threads going on under the same subject.
>>
>> I was not   responding to the AM Broadcast issue, but rather to the question
>> how  big  the difference is between the old 2nd RX and the new 2nd RX on
>> the
>> Ham Band  performance.
>>
>> There the upwards vs.  downwards conversion makes a  significant difference.
>>
>> 73
>> Rick,  DJ0IP
>>
>> -----Original  Message-----
>> From: TenTec  [mailto:tentec-bounces at contesting.com] On Behalf  Of John
>> Henry
>> Sent:  Monday, May 20, 2013 2:38 PM
>> To: Discussion of  Ten-Tec  Equipment
>> Subject: [TenTec] RX366
>>
>> Actually, a lot of this is   misunderstood.
>>
>> The RX366 related to how good or bad it receives  AM  Broadcast has nothing
>> to
>> do with upconversion or  downconversion.
>>
>> The  reason the RX366 doesn't provide AM Broadcast  reception as good as the
>> ham  bands is due to a broadcast band filter  before the roofing filters.
>> This is  to ensure that the umpteen  hundred gigawatt station 2 miles down
>> the
>> road  does not get into  the receiver path. You can measure differences in
>> ham
>> bands when  the local AM station is at full power in a rig that doesn't
>> have
>> a  broadcast band filter. The original sub receiver in the
>> 565/566  was  actually the Jupiter receiver, and it did not have a broadcast
>> band   filter in line.
>>
>> What we did fail to realize though when designing  the  Eagle and it's
>> subsequent reuse as the RX366, is that hams would  want to  use their Eagle
>> as
>> a high quality AM broadcast band  receiver in the ham  shack.
>> Me, personally, I'd go down to radio shack  and pick up a  $12.00
>> AM/FM/Weather/etc radio for this, and get the  RX366 to get the best  2nd rx
>> for ham operations.
>> .... Just my two  cents.
>>
>> For future  rigs, we will consider the impact of having a  separate path in
>> the  preselector for AM Broadcast and treat it as a  band of it's own. But
>> that  is up to discussion/design/prototyping in  house.
>>
>> Thanks, and  73,
>> John Henry, KI4JPL
>> TEN-TEC   Engineering
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