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-   -   Medium wave pre selector (https://www.radiobanter.com/homebrew/23075-medium-wave-pre-selector.html)

Richard May 21st 04 08:52 PM

Medium wave pre selector
 
Apart from Ham radio, I like DXing on many other bands, including LF and MW.

I am looking for a circuit diagam for a MW pre selector, anything would be
of interest, bit if someohw has one of thoese super dooper ones that can
focus donw to a few khz that wold be even better, (like the palomar MW pre
selector)

Rgds
Richard
SO5GB



Reg Edwards May 22nd 04 01:46 AM


"Richard" wrote in message
...
Apart from Ham radio, I like DXing on many other bands, including LF and

MW.

I am looking for a circuit diagam for a MW pre selector, anything would be
of interest, bit if someohw has one of thoese super dooper ones that can
focus donw to a few khz that wold be even better, (like the palomar MW pre
selector)

Rgds
Richard
SO5GB

===============================

Download in a few seconds program SELECT_1 from website below and run
immediately. Also includes tuning coil design. Ideal for MW.
----
.................................................. ..........
Regards from Reg, G4FGQ
For Free Radio Design Software go to
http://www.btinternet.com/~g4fgq.regp
.................................................. ..........



Reg Edwards May 22nd 04 01:46 AM


"Richard" wrote in message
...
Apart from Ham radio, I like DXing on many other bands, including LF and

MW.

I am looking for a circuit diagam for a MW pre selector, anything would be
of interest, bit if someohw has one of thoese super dooper ones that can
focus donw to a few khz that wold be even better, (like the palomar MW pre
selector)

Rgds
Richard
SO5GB

===============================

Download in a few seconds program SELECT_1 from website below and run
immediately. Also includes tuning coil design. Ideal for MW.
----
.................................................. ..........
Regards from Reg, G4FGQ
For Free Radio Design Software go to
http://www.btinternet.com/~g4fgq.regp
.................................................. ..........



J999w May 22nd 04 04:00 AM

Something like this?

http://www.ac6v.com/components.htm

Just build the first circuit without the remote.

jw
K9RZZ

J999w May 22nd 04 04:00 AM

Something like this?

http://www.ac6v.com/components.htm

Just build the first circuit without the remote.

jw
K9RZZ

Gregg May 22nd 04 06:19 AM

Here's a beauty I use:

http://www3.telus.net/small_business...BJ6-RF-Amp.png

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

Gregg May 22nd 04 06:19 AM

Here's a beauty I use:

http://www3.telus.net/small_business...BJ6-RF-Amp.png

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

J999w May 22nd 04 08:13 AM

Ack ! Wrong link ... sorry.

http://users.aol.com/lwcanews/unipre.htm

jw
K9RZZ

J999w May 22nd 04 08:13 AM

Ack ! Wrong link ... sorry.

http://users.aol.com/lwcanews/unipre.htm

jw
K9RZZ

J M Noeding May 23rd 04 11:07 PM

On Sat, 22 May 2004 00:46:39 +0000 (UTC), in
rec.radio.amateur.homebrew you wrote:


"Richard" wrote in message
...
Apart from Ham radio, I like DXing on many other bands, including LF and

MW.

I am looking for a circuit diagam for a MW pre selector, anything would be
of interest, bit if someohw has one of thoese super dooper ones that can
focus donw to a few khz that wold be even better, (like the palomar MW pre
selector)


Download in a few seconds program SELECT_1 from website below and run
immediately. Also includes tuning coil design. Ideal for MW.

.......

well, it is so nice to inform about my own site, although it has
nothing to do with the request, neither does your reply

A quick calculation for a tuned circuit gave the results of a single
circuitfilter covering 500-1793kHz. Not quite as sharp as requested,
the coil turn calculation might have been right, but what does it
help?

sri, OM

73
Jan-Martin

http://www.noding.com/la8ak/12345/n13.htm



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