On 1/8/19 9:19 AM, amdx wrote:
into my FM transmitter

And how is that supposed to work with a bunch of AM radios?

--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com

On Tuesday, January 8, 2019 at 11:09:38 AM UTC-5, Fox's Mercantile wrote:
On 1/8/19 9:19 AM, amdx wrote:
into my FM transmitter

And how is that supposed to work with a bunch of AM radios?



You feed the headphone jack of the FM radio into an AM XMTR...

Sheesh Jeff!!

On 1/8/19 11:46 AM, John-Del wrote:
On Tuesday, January 8, 2019 at 11:09:38 AM UTC-5, Fox's Mercantile wrote:
On 1/8/19 9:19 AM, amdx wrote:
into my FM transmitter

And how is that supposed to work with a bunch of AM radios?



You feed the headphone jack of the FM radio into an AM XMTR...

Sheesh Jeff!!



Heh, I keep seeing people totally oblivious to the requirement
of an AM transmitter for BCB AM radios.

--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com

On 1/8/2019 12:22 PM, Fox's Mercantile wrote:
On 1/8/19 11:46 AM, John-Del wrote:
On Tuesday, January 8, 2019 at 11:09:38 AM UTC-5, Fox's Mercantile wrote:
On 1/8/19 9:19 AM, amdx wrote:
into my FM transmitter

And how is that supposed to work with a bunch of AM radios?



You feed the headphone jack of the FM radio into an AM XMTR...

Sheesh Jeff!!



Heh, I keep seeing people totally oblivious to the requirement
of an AM transmitter for BCB AM radios.


I was oblivious to your requirement, you made that clear. I just
wanted to let people know what I do, and to make them aware of the old
radio programs available over the internet. Listening to Dragnet as I
write, on an FM radio!

Mikek

btw, has anyone tried a class E amplifier as an AM transmitter?
Base/gate drive is transmit frequency, B+ is the audio.
I'll google it.

On 1/8/19 6:10 PM, amdx wrote:
btw, has anyone tried a class E amplifier as an AM transmitter?
Â*Base/gate drive is transmit frequency, B+ is the audio.
I'll google it.

On of the "Impress kids" kit is an AM transmitter.
It's 1 MHz TTL crystal oscillator.
The Vcc is fed through an audio transformer.

Pretty slick, an AM transmitter with only 2 parts.


--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com

On 1/8/2019 6:49 PM, Fox's Mercantile wrote:
On 1/8/19 6:10 PM, amdx wrote:
btw, has anyone tried a class E amplifier as an AM transmitter?
Â*Â*Base/gate drive is transmit frequency, B+ is the audio.
I'll google it.

On of the "Impress kids" kit is an AM transmitter.
It's 1 MHz TTL crystal oscillator.
The Vcc is fed through an audio transformer.

Pretty slick, an AM transmitter with only 2 parts.



Ya, I found some, you do need some DC bias on the secondary of the
transformer.
See page 21, 2nd page from bottom.
https://www.google.com/url?sa=t&rct=...wKR236T gSS4v

Here's an AM transmitter with 3 parts.
https://www.youtube.com/watch?v=YNGs-IX_B2s

Mikek

On Tue, 8 Jan 2019 18:10:49 -0600, amdx wrote:

On 1/8/2019 12:22 PM, Fox's Mercantile wrote:
On 1/8/19 11:46 AM, John-Del wrote:
On Tuesday, January 8, 2019 at 11:09:38 AM UTC-5, Fox's Mercantile wrote:
On 1/8/19 9:19 AM, amdx wrote:
into my FM transmitter

And how is that supposed to work with a bunch of AM radios?



You feed the headphone jack of the FM radio into an AM XMTR...

Sheesh Jeff!!



Heh, I keep seeing people totally oblivious to the requirement
of an AM transmitter for BCB AM radios.


I was oblivious to your requirement, you made that clear. I just
wanted to let people know what I do, and to make them aware of the old
radio programs available over the internet. Listening to Dragnet as I
write, on an FM radio!


Aside from not being AM, I plan to give that link a listen. Sounds like
fun listening to those old radio shows. (By the way, those shows were
probably all broadcast on AM. FM did not exist at that time).


Mikek

btw, has anyone tried a class E amplifier as an AM transmitter?
Base/gate drive is transmit frequency, B+ is the audio.
I'll google it.

On 1/9/19 8:03 PM, wrote:
Aside from not being AM, I plan to give that link a listen. Sounds like
fun listening to those old radio shows. (By the way, those shows were
probably all broadcast on AM. FM did not exist at that time).

FM radio was assigned the 42 to 50 MHz band of the spectrum in 1940.
But then WWII happened. After the war, on June 27, 1945 the FCC made
its decision final and allocated one hundred FM channels from 88€“108
MHz.

The "Golden Age of American radio", period lasting roughly from 1930
through the 1940s, However he last network radio dramas to originate
during American radio€²s "Golden Age", Suspense and Yours Truly, Johnny
Dollar, ended on September 30, 1962.

--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com

On 1/9/2019 8:03 PM, wrote:
On Tue, 8 Jan 2019 18:10:49 -0600, amdx wrote:

On 1/8/2019 12:22 PM, Fox's Mercantile wrote:
On 1/8/19 11:46 AM, John-Del wrote:
On Tuesday, January 8, 2019 at 11:09:38 AM UTC-5, Fox's Mercantile wrote:
On 1/8/19 9:19 AM, amdx wrote:
into my FM transmitter

And how is that supposed to work with a bunch of AM radios?



You feed the headphone jack of the FM radio into an AM XMTR...

Sheesh Jeff!!



Heh, I keep seeing people totally oblivious to the requirement
of an AM transmitter for BCB AM radios.


I was oblivious to your requirement, you made that clear. I just
wanted to let people know what I do, and to make them aware of the old
radio programs available over the internet. Listening to Dragnet as I
write, on an FM radio!



I meant to say,
I wasn't oblivious to your requirement, you made it clear you wanted AM.

Aside from not being AM, I plan to give that link a listen. Sounds like
fun listening to those old radio shows. (By the way, those shows were
probably all broadcast on AM. FM did not exist at that time).


Yes, check into it, there are at least 6 different internet
broadcasts of old radio shows, probably more.

Mikek

btw, has anyone tried a class E amplifier as an AM transmitter?
Base/gate drive is transmit frequency, B+ is the audio.
I'll google it.