Frank Gilliland wrote
Man, if THIS ain't a trip -- a well-known, over-rated internet homebrew
tech
asking for help for a simple prescaler.

And why not? I am the first to admit lack of experience any a field. You
should not be afraid to ask, either. You learn a lot more than you do when
you simply site there and ridicule people.

... over-rated ...

??? See what I mean ??? Superfluous words conveying no meaning, other than
displaying emotions that one would hide in public to avoid embarrasment.

Hey Harry, don't you know that the basic
freshman-lab-grade Class B or C amplifier is nothing more than a
divide-by-2
counter? If you have a bunch of 2N2222's, 2N2907's, or any transistor with
an Ft
above your high-freq limit, you have a divide-by-(n x 2) counter. Any
advanced
homebrewer should know that stuff cause it's basic theory.

Not available in Sweden, just the usual 300MHz unity-gain (BC547, 557, etc),
and the circuit stops operating at about 100MHz when the gain/pcb has become
useless. I need RF transistors that are not available. ELFA only have no RF
small signal devices.

And for you to post such a question in alt.radio.pirate.... that's pretty
pathetic, Harry.

I was a pirate myself, LONG before I became an amateur. I have a lot of
respect for the knowledge and experience of some of these so-called
"pirates". I wonder how just many "pirates" you have spoken to on the HF
bands? Certainly more than 0 and you were not even aware of it.

Very best regards from Harry
( Writing from home this time )
harryvpo (at) hotmail (dot) com

Frank Gilliland wrote
Man, if THIS ain't a trip -- a well-known, over-rated internet homebrew
tech
asking for help for a simple prescaler.

And why not? I am the first to admit lack of experience any a field. You
should not be afraid to ask, either. You learn a lot more than you do when
you simply site there and ridicule people.

... over-rated ...

??? See what I mean ??? Superfluous words conveying no meaning, other than
displaying emotions that one would hide in public to avoid embarrasment.

Hey Harry, don't you know that the basic
freshman-lab-grade Class B or C amplifier is nothing more than a
divide-by-2
counter? If you have a bunch of 2N2222's, 2N2907's, or any transistor with
an Ft
above your high-freq limit, you have a divide-by-(n x 2) counter. Any
advanced
homebrewer should know that stuff cause it's basic theory.

Not available in Sweden, just the usual 300MHz unity-gain (BC547, 557, etc),
and the circuit stops operating at about 100MHz when the gain/pcb has become
useless. I need RF transistors that are not available. ELFA only have no RF
small signal devices.

And for you to post such a question in alt.radio.pirate.... that's pretty
pathetic, Harry.

I was a pirate myself, LONG before I became an amateur. I have a lot of
respect for the knowledge and experience of some of these so-called
"pirates". I wonder how just many "pirates" you have spoken to on the HF
bands? Certainly more than 0 and you were not even aware of it.

Very best regards from Harry
( Writing from home this time )
harryvpo (at) hotmail (dot) com

Frank Gilliland wrote:

In , "Harry \(SM0VPO\)"
wrote:

Hi all,
I am having a spot of bother with prescaler chips. Basically I need to find
one at the right price and availability. US$5 each is reasonable, but where
from? Is there one available that is not obsolete?

I live in Sweden and my local component shop is ELFA (Swedens answer to RS).
They don't sell ANY digital divider that operates above 50MHz, except for
the 74F163 and I cannot come up with a reliable interface circuit to couple
an oscillator into it at over 100MHz.

I found the MB501 (MC12022, SP8704) but it is obsolete and cannot find a
reliable source. I bought a couple, but that source dried up. All I need is
a divider chip that will accept a small signal up to 150MHz, is available,
cheap(ish) and will divide down to under 10MHz so that I can use CMOS to
process a synthesiser. A parallel-load synthesiser chip with in-built 150MHz
prescaler would do.

I have used "Teleport" to download over 50,000 pdf datasheets without any
luck. I have gone through most of them, but it takes a fair bit of time. If
anyone has a helpful suggestion I would appreciate it.

BR from Harry - SM0VPO

http://w1.859.telia.com/~u85920178/
harryvpo (at) hotmail (dot) com


Man, if THIS ain't a trip -- a well-known, over-rated internet homebrew tech
asking for help for a simple prescaler.

Over-rated?? Well, Harry's homebrew website is infinitely
better than yours ...

Frank Gilliland wrote:

In , "Harry \(SM0VPO\)"
wrote:

Hi all,
I am having a spot of bother with prescaler chips. Basically I need to find
one at the right price and availability. US$5 each is reasonable, but where
from? Is there one available that is not obsolete?

I live in Sweden and my local component shop is ELFA (Swedens answer to RS).
They don't sell ANY digital divider that operates above 50MHz, except for
the 74F163 and I cannot come up with a reliable interface circuit to couple
an oscillator into it at over 100MHz.

I found the MB501 (MC12022, SP8704) but it is obsolete and cannot find a
reliable source. I bought a couple, but that source dried up. All I need is
a divider chip that will accept a small signal up to 150MHz, is available,
cheap(ish) and will divide down to under 10MHz so that I can use CMOS to
process a synthesiser. A parallel-load synthesiser chip with in-built 150MHz
prescaler would do.

I have used "Teleport" to download over 50,000 pdf datasheets without any
luck. I have gone through most of them, but it takes a fair bit of time. If
anyone has a helpful suggestion I would appreciate it.

BR from Harry - SM0VPO

http://w1.859.telia.com/~u85920178/
harryvpo (at) hotmail (dot) com


Man, if THIS ain't a trip -- a well-known, over-rated internet homebrew tech
asking for help for a simple prescaler.

Over-rated?? Well, Harry's homebrew website is infinitely
better than yours ...

In , "Harry \(SM0VPO\)"
wrote:

Hi all,
I am having a spot of bother with prescaler chips. Basically I need to find
one at the right price and availability. US$5 each is reasonable, but where
from? Is there one available that is not obsolete?

I live in Sweden and my local component shop is ELFA (Swedens answer to RS).
They don't sell ANY digital divider that operates above 50MHz, except for
the 74F163 and I cannot come up with a reliable interface circuit to couple
an oscillator into it at over 100MHz.

I found the MB501 (MC12022, SP8704) but it is obsolete and cannot find a
reliable source. I bought a couple, but that source dried up. All I need is
a divider chip that will accept a small signal up to 150MHz, is available,
cheap(ish) and will divide down to under 10MHz so that I can use CMOS to
process a synthesiser. A parallel-load synthesiser chip with in-built 150MHz
prescaler would do.

I have used "Teleport" to download over 50,000 pdf datasheets without any
luck. I have gone through most of them, but it takes a fair bit of time. If
anyone has a helpful suggestion I would appreciate it.

BR from Harry - SM0VPO

http://w1.859.telia.com/~u85920178/
harryvpo (at) hotmail (dot) com


Man, if THIS ain't a trip -- a well-known, over-rated internet homebrew tech
asking for help for a simple prescaler. Hey Harry, don't you know that the basic
freshman-lab-grade Class B or C amplifier is nothing more than a divide-by-2
counter? If you have a bunch of 2N2222's, 2N2907's, or any transistor with an Ft
above your high-freq limit, you have a divide-by-(n x 2) counter. Any advanced
homebrewer should know that stuff cause it's basic theory.

And for you to post such a question in alt.radio.pirate.... that's pretty
pathetic, Harry.




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"Harry \(SM0VPO\)" wrote in message . ..
Hi all,
I am having a spot of bother with prescaler chips. Basically I need to find
one at the right price and availability. US$5 each is reasonable, but where
from? Is there one available that is not obsolete?

I live in Sweden and my local component shop is ELFA (Swedens answer to RS).
They don't sell ANY digital divider that operates above 50MHz, except for
the 74F163 and I cannot come up with a reliable interface circuit to couple
an oscillator into it at over 100MHz.

I found the MB501 (MC12022, SP8704) but it is obsolete and cannot find a
reliable source. I bought a couple, but that source dried up. All I need is
a divider chip that will accept a small signal up to 150MHz, is available,
cheap(ish) and will divide down to under 10MHz so that I can use CMOS to
process a synthesiser. A parallel-load synthesiser chip with in-built 150MHz
prescaler would do.

I have used "Teleport" to download over 50,000 pdf datasheets without any
luck. I have gone through most of them, but it takes a fair bit of time. If
anyone has a helpful suggestion I would appreciate it.

BR from Harry - SM0VPO

http://w1.859.telia.com/~u85920178/
harryvpo (at) hotmail (dot) com

If you can live with a larger and binary division, there would be
a prescaler that likely does work to that frequency limit in any
digitally tuned FM broadcast radio. I have not looked up the
upper frequency limit on these, but of course their needed range
isn't much lower than your upper limit. I don't have a specific
part number, I'm not even sure how much variety of ICs are used
in these applications, but just about any scrap digitally tuned
radio would offer up something. And if you need to find something
commonly available but not rely on scrounging, then open one
up and find the NTE replacement for the prescaler.

Michael VE2BVW

"Harry \(SM0VPO\)" wrote in message . ..
Hi all,
I am having a spot of bother with prescaler chips. Basically I need to find
one at the right price and availability. US$5 each is reasonable, but where
from? Is there one available that is not obsolete?

I live in Sweden and my local component shop is ELFA (Swedens answer to RS).
They don't sell ANY digital divider that operates above 50MHz, except for
the 74F163 and I cannot come up with a reliable interface circuit to couple
an oscillator into it at over 100MHz.

I found the MB501 (MC12022, SP8704) but it is obsolete and cannot find a
reliable source. I bought a couple, but that source dried up. All I need is
a divider chip that will accept a small signal up to 150MHz, is available,
cheap(ish) and will divide down to under 10MHz so that I can use CMOS to
process a synthesiser. A parallel-load synthesiser chip with in-built 150MHz
prescaler would do.

I have used "Teleport" to download over 50,000 pdf datasheets without any
luck. I have gone through most of them, but it takes a fair bit of time. If
anyone has a helpful suggestion I would appreciate it.

BR from Harry - SM0VPO

http://w1.859.telia.com/~u85920178/
harryvpo (at) hotmail (dot) com

If you can live with a larger and binary division, there would be
a prescaler that likely does work to that frequency limit in any
digitally tuned FM broadcast radio. I have not looked up the
upper frequency limit on these, but of course their needed range
isn't much lower than your upper limit. I don't have a specific
part number, I'm not even sure how much variety of ICs are used
in these applications, but just about any scrap digitally tuned
radio would offer up something. And if you need to find something
commonly available but not rely on scrounging, then open one
up and find the NTE replacement for the prescaler.

Michael VE2BVW

"Harry (SM0VPO)" wrote in message
...
Hi all,
I am having a spot of bother with prescaler chips. Basically I need to
find
one at the right price and availability. US$5 each is reasonable, but
where
from? Is there one available that is not obsolete?

I live in Sweden and my local component shop is ELFA (Swedens answer to
RS).
They don't sell ANY digital divider that operates above 50MHz, except for
the 74F163 and I cannot come up with a reliable interface circuit to
couple
an oscillator into it at over 100MHz.

I'd be inclined to use a CPLD. The Xilinx XC9536 would be good to over 150
MHz and a suitable synchronous counter is quite trivial.

73, Leon
--
Leon Heller, G1HSM

http://www.geocities.com/leon_heller

"Harry (SM0VPO)" wrote in message
...
Hi all,
I am having a spot of bother with prescaler chips. Basically I need to
find
one at the right price and availability. US$5 each is reasonable, but
where
from? Is there one available that is not obsolete?

I live in Sweden and my local component shop is ELFA (Swedens answer to
RS).
They don't sell ANY digital divider that operates above 50MHz, except for
the 74F163 and I cannot come up with a reliable interface circuit to
couple
an oscillator into it at over 100MHz.

I'd be inclined to use a CPLD. The Xilinx XC9536 would be good to over 150
MHz and a suitable synchronous counter is quite trivial.

73, Leon
--
Leon Heller, G1HSM

http://www.geocities.com/leon_heller

I have thought about using one of the modern SM PLL chips such as the
National LMX2326 which can be progammed to give any division over a wide
range (you do need a controller though to drive it) - you can access the
main divider output directly and ignore the phase divider. These are widely
available and pretty cheap. I would think you could do one one these "dead
bug" with care, though they are SSOP. Of course if you are doing a PLL, why
not use the whole chip?

Richard

Harry (SM0VPO) wrote in message
...
Hi all,
I am having a spot of bother with prescaler chips. Basically I need to
find
one at the right price and availability. US$5 each is reasonable, but
where
from? Is there one available that is not obsolete?

I live in Sweden and my local component shop is ELFA (Swedens answer to
RS).
They don't sell ANY digital divider that operates above 50MHz, except for
the 74F163 and I cannot come up with a reliable interface circuit to
couple
an oscillator into it at over 100MHz.

I found the MB501 (MC12022, SP8704) but it is obsolete and cannot find a
reliable source. I bought a couple, but that source dried up. All I need
is
a divider chip that will accept a small signal up to 150MHz, is available,
cheap(ish) and will divide down to under 10MHz so that I can use CMOS to
process a synthesiser. A parallel-load synthesiser chip with in-built
150MHz
prescaler would do.

I have used "Teleport" to download over 50,000 pdf datasheets without any
luck. I have gone through most of them, but it takes a fair bit of time.
If
anyone has a helpful suggestion I would appreciate it.

BR from Harry - SM0VPO

http://w1.859.telia.com/~u85920178/
harryvpo (at) hotmail (dot) com