With my newly and properly grouned transmission line to my 13 meter
test random wire, I can now hear the lower frequencies like never
before.

Whats the religious radio drama on 2300khz at 0330 UTC?

could it be a new pirate or WWCR/WUN?

Should be USACE on that frequency.

mike

mike wrote:

With my newly and properly grouned transmission line to my 13 meter
test random wire, I can now hear the lower frequencies like never
before.

Whats the religious radio drama on 2300khz at 0330 UTC?


Sounds like a strange signal for that freq. Could it be a harmonic
(or rx overload) from an AMBC?

Next time you hear it, check your loudest local AM stations ... maybe overload
from your superduper antenna.

jw
wb9uai

On 23 Sep 2003 04:12:51 GMT, (J999w) wrote:

Next time you hear it, check your loudest local AM stations ... maybe overload
from your superduper antenna.

jw
wb9uai

he,he
Yes, I think the antenna has something to do with it. It was WWCR on
3210 causing a harmonic (?) on my sony. Thats nearly 1khz off. This
happened several times tonight with those domestic based powerhouses.

Never happened before. Guess thats what the antenuator is for.

mike

A passive preselector between your antenna and radio would be better, that way
you're not throwing away 20db for hearing the good stuff.

Now 0645z and 4845.0 MAURITANIA is peaking S9+40 db !! WOW !

jw
wb9uai
milwaukee

On 23 Sep 2003 06:58:16 GMT, (J999w) wrote:

A passive preselector between your antenna and radio would be better, that way
you're not throwing away 20db for hearing the good stuff.

Now 0645z and 4845.0 MAURITANIA is peaking S9+40 db !! WOW !

jw
wb9uai
milwaukee



Cool, that beats my picking up 50 kw Radio Orbita 3 from Russia or the
African channels (Botswana and Nigeria) booming last night.

Not bad for a sony 7600GR portable eh?

I figured out the image problem. I think it's the voltage limiting
diodes I place yesterday across my antenna input to ground.

mike

Cool, that beats my picking up 50 kw Radio Orbita 3 from Russia or the
African channels (Botswana and Nigeria) booming last night.

Not bad for a sony 7600GR portable eh?

I figured out the image problem. I think it's the voltage limiting
diodes I place yesterday across my antenna input to ground.

mike

That is exactly what it is assuming yor RX uses a 455 kHz IF.
3210 -(2X IF)=2300.
Diodes across an antenna are always a bad idea.

Dale W4OP

take half the HF frequency, and tune to the corresponding am station - it
might be them s.

Mike,

Having some form of Antenna Input Protection is a Good Idea.
- - - Instead of a Single Diode: *--|--@
* = Ground -and- @ = Antenna


# 1. Good - Try a two sets of Double Diodes.
*--|--|--@
*--|--|--@


# 2. Better - Use a Gas Discharge Tube (GDT) for EMF shunting and a
10K Ohm Resister for Static Electricity Bleed-Off to Prevent Static
Electricity Build-Up and Discharge.

*----(o----@
*--\/\/\/--@

# 3. "Best" is an Improvement to #2 would be to replace the 10K Ohm
Resister with a with a 10K Audio Taper Potentiometer.
+ One Leg/End goes to the Antenna.
+ The 'other' Leg/End goes to Ground.
+ Then the Center of the POT goes to the Radio.
+ The Radio's Ground is also connected to the common Ground.
NOTE: The 10K POT now acts as a Bleed Resister and also an External
RF signal Attenuator.

*----(o----@
*--\/\/\/--@
*====^=====@
*====|
*====R

R = Radio

iane ~ RHF
..
..
= = = mike
= = = wrote in message . ..

Sony 7600GR portable

I figured out the image problem. I think it's the voltage limiting
diodes I place yesterday across my antenna input to ground.

mike

*cough* NE-2 bulb *cough*

;-)

--
Gregg
*It's probably useful, even if it can't be SPICE'd*
http://geek.scorpiorising.ca