[TenTec] RX366

Wed May 22 15:45:17 EDT 2013

James, you are completely correct.
We have never had the problem with AM BC stations here in Europe like you
guys have in the states.
My hunch is, it doesn't make a lot of sense to have a 50KW AM BC station
that propagates for thousands of miles at night because our language changes
about every 300 miles! (hi)  Therefore we have lots of smaller stations
broadcasting a lot less power, but in many different languages.

There is a simple fix for the problem in the states.
It used to cost $50 but now I think the price has gone up to $80 or maybe
even $100.
It's a high-pass filter that you can insert in the coax line.  You can
transmit and receive through it.
I have one from Dunestar.  You used to be able to get them from ICE, but I
believe the owner is now a SK.

The only time I've ever needed to use mine was when operating CQWW contest
in Luxembourg, near the site of Radio Luxembourg, one of Europe's strongest
AM BC stations.  Otherwise it just collects dust.

In the past (for about 30 years), I used a preselector on every radio I
owned.
The Orion was the first radio that did not need one.
I have it on my Eagle now, by default, but it doesn't really need it either.
When I switch it in and out, I have never seen a difference on the Eagle.

The Omni VI+ definitely benefited from a preselector. I always used it with
a preselector in contests - although it was really only necessary on 40m and
a little on 80m.  If you used its attenuator on 80m, you could hear just
fine, but you were attenuating the weak signals.  So every once in a blue
moon you can hear something on 80 with the preselector that you can't hear
without it.

With the Jupiter is was a matter of life and death (on 40m at night).  The
radio is usable with it and non-usable without it.
But that was the same for all the Icoms, Yaesus and Kenwoods that I owned
and I had quite a few of each of these.

Now that our radios have improved so much, it's time to focus on cleaning up
the filth that ALL of our transmitters are emitting. 

73
Rick, DJ0IP

-----Original Message-----
From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Richards
Sent: Wednesday, May 22, 2013 8:55 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] RX366

On 5/22/2013 9:52 AM, Rick - DJ0IP / NJ0IP wrote:
> When I win the lottery Ray, I'll buy you one too.
>
> I have no idea if this would even happen in the states.

_________________________________________________	

	Yes, but from a slightly different source.

	Some HF receivers in some locations have problems
	with nearby AM BCB stations which swamp or
	desense the receiver on HF frequencies.
	SWLs and hams both have this problem if they
	live too close to the AM BCB antenna, and sometimes
	a nearby ham on HF with QRO can cause problems.
	I take it from JH's explanation that the AM BCB
	filter placed early in the receiver circuit handles
	this problem right out of the chute, allowing the
	rest of the receiver sections to function free of it.

	So, perhaps a slightly different cause, but
	the same solution.

	I have been fortunate not to live too close to
	any AM BCB stations - but I know many SWLs who do,
	and it is a really difficult problem for many
	of them, because so many affordable SWL receivers
	do not have this type of protection.   I think
	that is where MFJ makes its money selling
	preselectors and such.

Just MY take.

------------------------  K8JHR  -------------------

> You don't have the problem with shortwave broadcast stations that we 
> have here in Europe.
> Sure, you can hear the carriers from some of them, but they're pegging 
> the S-Meter over here.
>
> Also it has gotten a lot better since I ran that test 6 years ago.
> Most of the shortwave broadcast stations have now moved out of the 40m 
> band, and we have gained another 100 kHz of band.
> Our band used to end at 7.100, now it goes up to 7.200.
>
> In addition, it was very dependent on which way the beam was pointed.
> If the beam was pointing between northeast and southeast, all of the 
> radios were crunched except the Orion's first RX and even the Orion 
> began to hear the phantoms on its first RX, but they were weak.
> If we rotated it towards the west the Orion's first RX was completely
clean.
> The others were still crunched.
>
> I guess you just have to operate from this side of the pond to believe it.
>
> 73
> Rick, DJ0IP
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of 
> Rsoifer at aol.com
> Sent: Tuesday, May 21, 2013 7:39 PM
> To: tentec at contesting.com; ac5aa at ac5aa.com
> Subject: Re: [TenTec] RX366
>
> Judging from some of the comments, I must be fortunate to live in an 
> area with no strong local signals.  The only times when either 
> receiver in my Orion II folds are when the hardware noise blanker is 
> on.  When I  turn it off, the receiver comes back.  I  wish I had that 
> 3 element  40m beam up 105 feet, though ;-)
>
> 73 Ray W2RS
>
>
> In a message dated 5/21/2013 12:46:01 A.M. GMT Standard Time, 
> k8mn at frontiernet.net writes:
>
> That's  the way I use the sub-receiver as well.  I have a local friend 
> who bought the OII with the 366 installed and, after having listened 
> to it a number of times, I can't see a reason to purchase it.
>
> 73,
>
> Dave  Heil K8MN
>
> On 5/20/2013 23 32, Duane Calvin wrote:
>> 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
>
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