[TenTec] RX366

[Rsoifer at aol.com]

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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