All the nice FM radio ICs are gone, sniff sniff...

P

Phil Hobbs

Guest
All of them, just in the last year or so.

SA604A/SA614A was a fave, although not as nice as the late lamented
MC13155.

BITD I used to use the RSSI outputs for all sorts of stuff--even some of
the micropower chips would give megahertz detection bandwidths if you
ran the RSSI output into a very low impedance, such as a biased cascode
or fast TIA.

You can still get the TL026 AGC amp, the SA571 compandor, and allegedly
the MC1496, but all the nice NXP and onsemi oscillator/mixer and IF
amp/limiter ones are gone,

There were things you could do with those for $2 that are much harder
now. I still have lots for lab protos, but in the scheme of things I\'m
less likely to use them since they\'ll never make it into an actual
instrument.

A pity.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com
 
On Fri, 3 Mar 2023 15:19:46 -0500, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

All of them, just in the last year or so.

SA604A/SA614A was a fave, although not as nice as the late lamented
MC13155.

BITD I used to use the RSSI outputs for all sorts of stuff--even some of
the micropower chips would give megahertz detection bandwidths if you
ran the RSSI output into a very low impedance, such as a biased cascode
or fast TIA.

You can still get the TL026 AGC amp, the SA571 compandor, and allegedly
the MC1496, but all the nice NXP and onsemi oscillator/mixer and IF
amp/limiter ones are gone,

There were things you could do with those for $2 that are much harder
now. I still have lots for lab protos, but in the scheme of things I\'m
less likely to use them since they\'ll never make it into an actual
instrument.

A pity.

Cheers

Phil Hobbs
Click to expand...

Motorola used to have some fun linear ICs. I designed some microphone
AGC amps and some HF carrier links for the NYC subway paging system. I
think I used the MC1496. OK, blame me when nothing is intelligable.
 
On a sunny day (Fri, 03 Mar 2023 12:40:44 -0800) it happened John Larkin
<jlarkin@highlandSNIPMEtechnology.com> wrote in
<rgm40i9l6agu2dk7hotbijgv4dfclani9k@4ax.com>:

On Fri, 3 Mar 2023 15:19:46 -0500, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

All of them, just in the last year or so.

SA604A/SA614A was a fave, although not as nice as the late lamented
MC13155.

BITD I used to use the RSSI outputs for all sorts of stuff--even some of
the micropower chips would give megahertz detection bandwidths if you
ran the RSSI output into a very low impedance, such as a biased cascode
or fast TIA.

You can still get the TL026 AGC amp, the SA571 compandor, and allegedly
the MC1496, but all the nice NXP and onsemi oscillator/mixer and IF
amp/limiter ones are gone,

There were things you could do with those for $2 that are much harder
now. I still have lots for lab protos, but in the scheme of things I\'m
less likely to use them since they\'ll never make it into an actual
instrument.

A pity.

Cheers

Phil Hobbs

Motorola used to have some fun linear ICs. I designed some microphone
AGC amps and some HF carrier links for the NYC subway paging system. I
think I used the MC1496. OK, blame me when nothing is intelligable.
Click to expand...

Most done here now with RTL_SDR USB sticks, including FM stereo, GPS,
spectrum analyser, digital TV, from about 20 MHz to 1.6 GHz.
Simple FM radios go from 99 cents upwards on ebay, those must sure
have nice chips, I have a credit card size FM radio/mp3/video player
with build in rechargeable battery and USB, few dollars it was (small screen).

You can always go discrete...
Dual gate MOSFETS make great mixers, gain control,,, done it many times.
Some BFY90 or BFY92 for the GHz RF, wind some coils, radio in an hour from scrap,
just a totem pole output for the speaker.
FM discriminator with 2 diodes...
Did it all, wound the coils..
Did a whole TV (analog) those days with discrete, in the late sixties, including tuner and deflection.
Well used a tube for the HV rectifier, because I had no HV diodes at hand, those did exist (and HV multipliers).
Amazing good reception actually.
Digital TV is more difficult with discrete... have not done it, anybody did that?
Time base with UJTs for the vidicon camera I designed.. 1967-1968.

sjips why use sjips?
;-)

An if no silly-con then I can do it with tubes.
Some of those tubes are still available on ebay.

OK, memories...
:)
 
Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> Wrote in message:r
> All of them, just in the last year or so.SA604A/SA614A was a fave, although not as nice as the late lamented MC13155.BITD I used to use the RSSI outputs for all sorts of stuff--even some of the micropower chips would give megahertz detection bandwidths if you ran the RSSI output into a very low impedance, such as a biased cascode or fast TIA.You can still get the TL026 AGC amp, the SA571 compandor, and allegedly the MC1496, but all the nice NXP and onsemi oscillator/mixer and IF amp/limiter ones are gone,There were things you could do with those for $2 that are much harder now. I still have lots for lab protos, but in the scheme of things I\'m less likely to use them since they\'ll never make it into an actual instrument.A pity.CheersPhil Hobbs-- Dr Philip C D HobbsPrincipal ConsultantElectroOptical Innovations LLC / Hobbs ElectroOpticsOptics, Electro-optics, Photonics, Analog ElectronicsBriarcliff Manor NY 10510http://electrooptical.nethttp://hobbs-eo.com

The sa636 is still active, although I dont see any stock.

Cheers
--


----Android NewsGroup Reader----
https://piaohong.s3-us-west-2.amazonaws.com/usenet/index.html
 
On 2023-03-08 12:06, Martin Rid wrote:
Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> Wrote in
message:

All of them, just in the last year or so.

SA604A/SA614A was a fave, although not as nice as the late
lamented MC13155.

BITD I used to use the RSSI outputs for all sorts of stuff--even
some of the micropower chips would give megahertz detection
bandwidths if you ran the RSSI output into a very low impedance,
such as a biased cascode or fast TIA.

You can still get the TL026 AGC amp, the SA571 compandor, and
allegedly the MC1496, but all the nice NXP and onsemi
oscillator/mixer and IF amp/limiter ones are gone,

There were things you could do with those for $2 that are much
harder now. I still have lots for lab protos, but in the scheme of
things I\'m less likely to use them since they\'ll never make it into
an actual instrument.

A pity.

The sa636 is still active, although I dont see any stock.
Click to expand...

Last buy date May 27th, 2022. :(

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com
 
Am 08.03.23 um 18:06 schrieb Martin Rid:

> The sa636 is still active, although I dont see any stock.

Summer of 2026 at DK.
 
On 2023-03-08 12:55, Gerhard Hoffmann wrote:
Am 08.03.23 um 18:06 schrieb Martin Rid:

The sa636 is still active, although I dont see any stock.

Summer of 2026 at DK.
Click to expand...

NXP website says EOL, unfortunately, with last shipments in May \'23.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com
 
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