Bob Dobbs wrote:
Geoffrey S. Mendelson wrote:

~~~

don't buy a SW, especially ham, receiver and expect it to perform
well on the AM BCB.

Why not?
I didn't initially buy any of my HAM rigs for use on AMBCB,
however a couple have turned out to perform very nicely there.
They're very stable (TCXO), have adjustable IF bandwidth and shift,
one of them has a convenient band scan to spot stations,
another actually has a spectrum scope to look at the band.
And even though that band is always full at night
it helps to see what's out there during the day.


The very best ram radio receivers have no coverage outside the ham
bands, where they are bandpass filtered.

On Apr 16, 6:25*am, dave wrote:
Bob Dobbs wrote:
Geoffrey S. Mendelson wrote:

~~~

don't buy a SW, especially ham, receiver and expect it to perform
well on the AM BCB.

Why not?
I didn't initially buy any of my HAM rigs for use on AMBCB,
however a couple have turned out to perform very nicely there.
They're very stable (TCXO), have adjustable IF bandwidth and shift,
one of them has a convenient band scan to spot stations,
another actually has a spectrum scope to look at the band.
And even though that band is always full at night
it helps to see what's out there during the day.

The very best ram radio receivers have no coverage outside the ham
bands, where they are bandpass filtered.- Hide quoted text -

- Show quoted text -

Does that mean your Elecraft?

bpnjensen wrote:
On Apr 16, 6:25 am, dave wrote:
Bob Dobbs wrote:
Geoffrey S. Mendelson wrote:
~~~
don't buy a SW, especially ham, receiver and expect it to perform
well on the AM BCB.
Why not?
I didn't initially buy any of my HAM rigs for use on AMBCB,
however a couple have turned out to perform very nicely there.
They're very stable (TCXO), have adjustable IF bandwidth and shift,
one of them has a convenient band scan to spot stations,
another actually has a spectrum scope to look at the band.
And even though that band is always full at night
it helps to see what's out there during the day.
The very best ram radio receivers have no coverage outside the ham
bands, where they are bandpass filtered.- Hide quoted text -

- Show quoted text -

Does that mean your Elecraft?

The Elecraft offers a general coverage option which includes switched
filters for the bands between the ham bands. I was thinking more of the
upscale classic Ten Tec.

On Fri, 16 Apr 2010 11:33:05 -0700, dave wrote:

bpnjensen wrote:
On Apr 16, 6:25 am, dave wrote:
Bob Dobbs wrote:
Geoffrey S. Mendelson wrote:
~~~
don't buy a SW, especially ham, receiver and expect it to perform
well on the AM BCB.
Why not?
I didn't initially buy any of my HAM rigs for use on AMBCB,
however a couple have turned out to perform very nicely there.
They're very stable (TCXO), have adjustable IF bandwidth and shift,
one of them has a convenient band scan to spot stations,
another actually has a spectrum scope to look at the band.
And even though that band is always full at night
it helps to see what's out there during the day.
The very best ram radio receivers have no coverage outside the ham
bands, where they are bandpass filtered.- Hide quoted text -

- Show quoted text -

Does that mean your Elecraft?

The Elecraft offers a general coverage option which includes switched
filters for the bands between the ham bands. I was thinking more of the
upscale classic Ten Tec.

What kind of BCB performance do you get on the K3?

wrote:
On Fri, 16 Apr 2010 11:33:05 -0700, wrote:

bpnjensen wrote:
On Apr 16, 6:25 am, wrote:
Bob Dobbs wrote:
Geoffrey S. Mendelson wrote:
~~~
don't buy a SW, especially ham, receiver and expect it to perform
well on the AM BCB.
Why not?
I didn't initially buy any of my HAM rigs for use on AMBCB,
however a couple have turned out to perform very nicely there.
They're very stable (TCXO), have adjustable IF bandwidth and shift,
one of them has a convenient band scan to spot stations,
another actually has a spectrum scope to look at the band.
And even though that band is always full at night
it helps to see what's out there during the day.
The very best ram radio receivers have no coverage outside the ham
bands, where they are bandpass filtered.- Hide quoted text -

- Show quoted text -

Does that mean your Elecraft?

The Elecraft offers a general coverage option which includes switched
filters for the bands between the ham bands. I was thinking more of the
upscale classic Ten Tec.

What kind of BCB performance do you get on the K3?

I haven't tried. My widest IF is 2.7 KHz. I don't have the general
coverage option. I have a tuned multiband amateur antenna connected to
it. I use a Drake SW2 for my BCB DXing.

Bob Dobbs wrote:
dave wrote:
Bob Dobbs wrote:
Geoffrey S. Mendelson wrote:

~~~

don't buy a SW, especially ham, receiver and expect it to perform
well on the AM BCB.
Why not?
I didn't initially buy any of my HAM rigs for use on AMBCB,
however a couple have turned out to perform very nicely there.
They're very stable (TCXO), have adjustable IF bandwidth and shift,
one of them has a convenient band scan to spot stations,
another actually has a spectrum scope to look at the band.
And even though that band is always full at night
it helps to see what's out there during the day.

The very best ram radio receivers have no coverage outside the ham
bands, where they are bandpass filtered.

I guess my gear all falls outside the "best ram radio receiver" category,
and are more accurately called general coverage HF radio receivers,
with the US amateur band plan imposed on the transmit function.
In one rig there 'were' three SMT diodes
each about the size of a grain of black pepper
that had to be excised. g


It's a matter of being able to use a low IF, and therefore a roofing filter.

Bob Dobbs wrote:
dave wrote:

It's a matter of being able to use a low IF, and therefore a roofing filter.

A couple are triple conversion but only one has a 'roofing' filter.


The Elecraft has a first IF of 8.2 MHz. Then there's a xtal filter,
then the second IF of 15 KHz, which directly feeds the DSP demodulator.