Hi Linus:I like this post.I don't agree 100% with it but you have some
good points.You seem to be a sensible guy [up to now].I'm ready to
quit this thread and spend my time in listening to my radio,and keep
working with my K9AY antenna box control

Good deal Ken!
Did you find it tough to get ahold of the relays for the K9AY box? Out where I
live (SW Missouri) I have to do most of my parts shopping online or through
catalogues, so I haven't found time to really look deeply into what it takes
(component-wise) to build the K9AY loop and control box. VERY intriguing design
though. How's it working for you? AND, how well does it work with your R75? :-)
Linus

AFA ICOM, they're not a ham leader for nothing.

Pros and cons there too, but I agree with you (and our Yahoo group posts and
personal e-mails back in the Spring bear that out nicely)... but I'm STILL
looking for replacement surface mount LED's for that damned display! Coming
close though... I just really prefer something cool and colorful to that orange
display! :-)
Linus

Since you were a major instigator in the first R75 vs R8B radio war, I'm
glad to see you learned something from that experience. Please take
Kenneth back to the Yahoo R75 group where he belongs. You may have to
pull him by the ear. Tell him he needs a time-out or there will be no
R75 privileges until he behaves better.


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In article , "phil "
wrote:

hi Telamon:

how would you characterize these RX340 specs?

IP3: 5-kHz -53 dBm, 20-kHz +4 dBm

The 5 KHz number is not very good. The 20 KHz number is not bad. In
practice you might think I would have a problem listening to a weak
station with a strong station on the next channel over but I haven't
noticed it.

phase noise: -113 dBc/Hz

It would be nice if it was -120 down but it appears to be low enough
because the receiver noise floor can be 1uV.

ultimate rejection: 70 dB

It is supposed to be at least 70 dB but depending on how you use the
radio it is actually much greater so the ultimate selectivity is better
than this number makes it look.

--
Telamon
Ventura, California

MSH,

"Perhaps it's time to let this thread die or revert back to
.. . . the original question."

* * And The Original Question In 2003 Was * *

From: Neil Bell )
Subject: Icom R-75 question
Newsgroups: rec.radio.shortwave
Date: 2003-12-28 14:32:10 PST

I know this radio has a great reputation for SW reception,

My question is how does it do on BCB MW reception ?

Is an external speaker really needed?

Neil Bell

* * * * * * * * * * * * * * * * * * * * * * *

Neil Bell & et al,

IMHO: the Icom IC-R75 does a very good job as an AM/MW/BCB DXing Receiver.

NOT A FACT JACK - Just My Opinion - Take It Or Leave It [.]

pale ~ RHF
= = = Peace and Love Everyone.
..
..
= = = "Mark S. Holden"
= = = wrote in message ...
- - - S N I P - - -

Perhaps it's time to let this thread die
or revert back to the original question.

..

"phil " wrote:


Hello... phil?

whats the matter Eric? you're usually a bowl of sunshine. overload any
radios lately?


Heck, no, phil, all the radios I have now can handle strong signals in
their front-ends.

I see Bob Sherwood relatively frequently at hamfests and keep bugging
him to put the R-75 specs into his high-end receiver comparison table.
Eventually... (he just laughed when I tried to sell him my R-75!)


73s,
phil

--
Eric F. Richards,
"Nature abhors a vacuum tube." -- J. R. Pierce, Bell Labs, c. 1940

"phil " wrote:

hi Telamon:

how would you characterize these RX340 specs?

IP3: 5-kHz -53 dBm, 20-kHz +4 dBm
phase noise: -113 dBc/Hz
ultimate rejection: 70 dB

How's this radio look to you, phil?

dynamic range at 5 kHz: 59 dB, 20 kHz: 81 dB
phase noise: -131 dBc/Hz
ultimate rejection: 75 dB

--
Eric F. Richards,
"Nature abhors a vacuum tube." -- J. R. Pierce, Bell Labs, c. 1940

"N8KDV" wrote in message
...


Kenneth wrote:


My R8B flaws facts "no give sense" compared with other
logical reasons? I keep with my scientific side by side test facts an
leave the "logic reasoning" to the studious.

Would someone please step forward and translate the above?

Steve
Holland, MI
Drake R7, R8 and R8B
"I swear by, not at, Drake receivers"

I don't think believe anyone here and trusts no one.

--
73's
Rick

Drake R8 R8B
ICOM R75
Yaesu 7700
Hammarlund SP-600-JX-17

"If you try to fail and succeed, which have you done?"

(GrtPmpkin32) wrote in message ...

Good deal Ken!
Did you find it tough to get ahold of the relays for the K9AY box? Out where I
live (SW Missouri) I have to do most of my parts shopping online or through
catalogues, so I haven't found time to really look deeply into what it takes
(component-wise) to build the K9AY loop and control box. VERY intriguing design
though. How's it working for you? AND, how well does it work with your R75? :-)
Linus
I successfully homebrewed a K9AY [one year ago]and it is a MW weak
signals magnet.Better by far than a kiwa loop that I had [the big
one].I'm having problems with finding a ORP-12 LDR [philips one] for
my Vactrol assemble..but I'm using it changing the terminating
resistor manually.In some rat shack stores with some expired inventory
you can find some of the part needed for example relays ,metal boxes
ect.There is a K9AY yahoo with a lot of good information about how to
homebrew your own K9AY.You can start with the simplest one [only take
about 1 hour to erect one using some easy to get part.

Eric F. Richards wrote in message . ..
"phil " wrote:


Hello... phil?
.

I see Bob Sherwood relatively frequently at hamfests and keep bugging
him to put the R-75 specs into his high-end receiver comparison table.
Eventually... (he just laughed when I tried to sell him my R-75!)
Do you know that the Ten Tec RX340 and R-75 passport laboratory
measurements were conducted in your friend Bob Sherwood laboratory?
Here Bob RX-340 [$3,999]test findings:The sync selectable sideband
lose look relatively
easily,Passport recomend an external Sherwood SE-3 [500.00],poor
dynamic range,static crashes sound harsher than on analog
receivers.Spurious signal noted around 6MHZ segment,notch filter does
not work in AM,Sync selectable sideband or ISB modes,Noise blanker not
effective ect, ect, ect,
Maybe he recalled this RX-340 test when he laughed at you in
the hamfest.About his R-75 test:Oustanding rejection of spurious
signals,reception of faint signals alongside powerful competing ones ,
ultimate selectivity and good dynamic range.If you or anyone here keep
trying to put down the R-75 with subjetive statements I will react
with your own resources.