Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Old January 8th 19, 05:09 PM posted to sci.electronics.repair
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Default Using a Signal Generator for an "In Home" radio transmitter

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
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http:foxsmercantile.com

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Old January 8th 19, 06:46 PM posted to sci.electronics.repair
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Default Using a Signal Generator for an "In Home" radio transmitter

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!!
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Old January 8th 19, 07:22 PM posted to sci.electronics.repair
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Default Using a Signal Generator for an "In Home" radio transmitter

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
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Old January 9th 19, 01:10 AM posted to sci.electronics.repair
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Default Using a Signal Generator for an "In Home" radio transmitter

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.

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Old January 9th 19, 01:49 AM posted to sci.electronics.repair
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Default Using a Signal Generator for an "In Home" radio transmitter

On 1/8/19 6:10 PM, amdx wrote:
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 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


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Old January 9th 19, 03:45 AM posted to sci.electronics.repair
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Default Using a Signal Generator for an "In Home" radio transmitter

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?
**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


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Old January 10th 19, 03:03 AM posted to sci.electronics.repair
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Default Using a Signal Generator for an "In Home" radio transmitter

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.


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Old January 10th 19, 04:30 PM posted to sci.electronics.repair
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Posts: 640
Default Using a Signal Generator for an "In Home" radio transmitter

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.





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