Modern Subcarrier SCA Radio Chinese Broadcasting something dung dow

[@joeblow8593]

67 and 92 khz are the primary SCA frequencies although I heard that there was another one that was used. SCA was also used to carry telemetry signals such as STL (Studio to transmitter link) as well as "private" hidden broadcast signals. It's my guess that is less expensive to the service and for the intended audience to use SCA radios instead of making the subscribers buy $100 digital radios and/or having to pay for broadband internet. They probably manufacture these radios overseas for $1 or $2 each and come to the U.S. already preconfigured with the broadcast frequency, SCA sub frequency and face plate with the phone number. I'm thinking that this may not be necessarily a commercial free broadcast, but rather perhaps a commercial one that can already be accessed off the 'net. Los Angeles is a large enough market to support SCA radio...

[@rkmklz7562]

I remember trying to get Muzak on the SCA sub Carrier...back in the 1970s

[@staubandy9709]

That chinese music was just to funny thumbs ub for that camera dance. Great videos

[@chrisglaister9303]

Not many copyright strikes on this one, I'll bet.

[@TonyFleetwood]

Song 舞女 wu nv Artist 韩宝仪 han bao yi Album 恰恰与精选 3 qia qia yu jing xuan 3 Licensed to KZbin by One Stop Music Bhd Malaysia (on behalf of Form Records (M) Sdn Bhd); UMPG Publishing, and 5 Music Rights Societies

[@em-electronicsmore1010]

好听

[@jime386]

Years ago, I hooked the speaker wires of an FM radio to the antenna inputs on a shortwave radio to make a sort of makeshift SCA radio. I was able to pick up readers digest being read , the local newspaper being read and what sounded like Muzak. Not much fun to listen to but fun to make

[@mlghamsters2555]

I've heard about the fillings causing someone's jaw to receive certain frequencies too. IIRC they lived near a transmitter, and thought they were losing their mind! By the way Jim E, not citrojim perchance?

First you must take off the tinfoil hat,and remove the lead foil from your man cave to get those broadcasts..They may actually be reflections of broadcasts made hundreds of years ago coming back. Wow,we're going 2 cans short a six pack here.

[@ChristopherSobieniak]

Sounds quite interesting how that was done.

[@jsciarri]

9:25 dung dung dung dung dung

[@alancordwell9759]

Fascinating! Reminds me of surfing the audio subcarriers on the old analogue satellite TV... there was some really interesting stuff on that. You know, digital sure killed off a lot of fun! I don't think we ever had SCA here in the UK but in Germany I think they used it for traffic info on car radios.

[@bigsky1970]

That's what it reminded me of too. Lots of fun and interesting stuff piggybacked on standard video channels.

[@5roundsrapid263]

My relatives had C-band. It was fun to turn the dish and see what you could get! Sometimes even behind-the-scenes wild feeds.

[@marcrhsn]

Germany used a subcarrier for signalling, not for the actual traffic information, just like TP and TA on RDS, only analogue. The system, developed by Blaupunkt, was called ARI (Autofahrer Rundfunk Information, car-driver radio information). The presence of a 57kHz subcarrier signalled a station that carried regular traffic (SK, Senderkennung, transmitter marker) info, 6 different tones signalled different regions (BK, Bereichskennung, area marker) and a 125Hz tone signalled that a traffic information broadcast was on the air (DK, Durchsagekennung, announcement marker). A decoder in the car radios turned up the volume or stopped a playing tape or CD and switched to the traffic information. There where tests with this systems in a few large cities in the USA and Canada, but as Blaupunkt was the only brand that offered ARI-radios in the US, these where unsuccessful. The system is now switched of and Germany uses only RDS. Both systems can coexist on the same subcarrier.

[@alancordwell9759]

Very interesting, thanks. It was on a Blaupunkt radio I'd seen it but I didnt know how it worked until now!

[@2davydo]

I used to enjoy spending hours Swinging that big old dish across the sky to see what I could find miscellaneous live network feeds European network feeds. HQ radio music stations.Late 80s and early 90s The KU band was just coming out . We had a dual band feed horn and C And KU LNB. To pick up those broadcasts.

[@bigsky1970]

19 KHz is the pilot tone telling the radio there's stereophonic information at 38 Khz. 57 KHz s for the RDS (Radio Data System) information for sets that have it, like artist and song title. Like you see in modern car stereos. They're all harmonics of 19 Khz. Only stereo transmissions have the 19 Khz pilot tone. 101.9FM is KSCA in Glendale. (Interesting callsign btw)

[@waltschannel7465]

5:19 That laugh! Nice twerco squirculation ya got there. It is interesting that SCA survived. Perhaps it's the low cost entry point for the broadcasts that is the attraction. Interesting. Thanks Shango and Chris!!

[@capolaya]

5:04 "Ahehehi hohuhohu hihohuhohuhohu" (x3) HAHAHAH!!!!

[@hokusman100]

I was using my SDR to listen to this station; really enjoying the classic jams. Thanks for posting this video, I was trying to figure out more info about this station, since I only know a couple of words of Chinese and there’s hardly any info about SCA stations online I was having a hard time figuring out what the station actually is

[@teacfan1080]

You're tuned to the Chinese jammin' dance hour! Makes everyone, everywhere, even while they're recording a Chinese subcarrier video want to get down and boogie!

[@stanleybadams]

Sub carriers were designed by Armstrong and used for background music and other purposes. Freq deviation is much lower and hence lower audio recovered.

[@klafong1]

The narrowband FM IC in this radio upconverts the subcarriers to 455 kHz. To find out which subcarrier your radio is using, listen for the local oscillator using a second radio. 67 kHz will use 388 or 522 kHz. 92 kHz will use 363 or 547 kHz.

[@ericmoeller3634]

I can't believe they had a nerve to install a tweeter in that turd

[@shango066]

SubCarrier: en.wikipedia.org/wiki/Subcarrier

[@drussell_]

I still have that copy of the subcarrier section from that old NAB handbook to send to you but only just recently found your contact info. I'll send it over as soon as I get back home from the long weekend lake trip! :)

[@brianleeper5737]

I have an old Johnson Electronics SCA tuner I removed from a telco closet about 20 years ago. It's crystal controlled. I think it was for Muzak, but last time I tried it, nothing but static on the SCA, still picks up the main station fine (has a switch to select).

[@forjimmykimmel9269]

9:24 "contain yourself" XD

[@NickG123]

hi jimmy.

[@rdsledge]

Another great video from Mr Shango’s Lab!

[@CheezyDee]

It's all about licensing. The major broadcasting companies got together to "create" the HDRadio format, then have the nerve to charge a licensing fee for the radios that receive it. SCA bypasses all that crap provided there's still a couple independent broadcast stations left that will cooperate.

[@michaelturner4457]

Another thing, an SCA radio like the one in the video can be made very cheaply using off the shelf components, unlike HDRadio,

[@RyanSchweitzer77]

Indeed, the only disadvantage SCA has over HD Radio is SCA's lower audio fidelity, more at par with the narrow-band audio of an AM station, while HD Radio sounds much better and equal to FM. But this is mostly a moot point, since most SCA programming is usually talk radio or music meant for background use, where fidelity isn't so critical.

[@reginaldlawrence412]

Wow that cool. I have a old subcarrier radio from the 70's. One of our local radio stations had made for them to give out as a prize for people.

[@imark7777777]

Interesting I'm reading this comment thinking did this radio station commission subcarrier radios for the contest to give them out to people who won and then have like special programming for those winners?

[@lenscap8925]

And that was Sparkie diode and Crystal transistor with their new music video "My rickshaw has a flat"...

[@cttv90108]

This radio was purchased at All Electronics in Sherman Oaks. They have the website allelectronics.com. you probably won't find this radio at the website, they only list items they have in large quantities on the website. we have no commercial connection to them however it is worth plugging them because they have a lot of electronic stuff at reasonable prices. So check it out if you're interested.

[@TheRadiogeek]

Is that brother stair in Chinese at 9:37?? LOL 😜

[@mrnmrn1]

When you went way up in frequency, probably you received the main carrier at 2x IF below, so it was a mirror frequency reception.

[@LakeNipissing]

I have a Chinese "pirate" SCA radio with AM, FM (full 88-108) and SC switch for the 67kHz/92kHz FM subcarriers. It allows you to tune the entire FM band on either of the subcarrier frequencies. Unfortunately there is nothing on either 67 or 92 on any of the local FM stations where I live, so it ends up being a very poorly built, tinny sounding AM/FM radio.

[@Synthematix]

Sum Ting Wong with that radio

[@shermanikk]

Ho Lee Fuk I can't believe that this exists!

[@InsideOfMyOwnMind]

That's how they name their kids, by tossing pots and pans down the stairs and whatever they say is the name. Now before you get all weird about it my Asian friends thought it was funny.

[@CheezyDee]

Velly funny, make special won ton soup for you.

[@InsideOfMyOwnMind]

@@CheezyDee Hey, I've seen the "special". I watched the movie Existence. No thanks.

[@CheezyDee]

You forgot Eddie Murphy Delirious. kzbin.info/www/bejne/eprUnoV-hb6ZnK8

[@ichigo_varactor358]

FCC laws mandate that SCA radios be locked to a single frequency, hence the crystal: 45.6 MHz * 2 + 10.7 MHz IF gives a frequency of 101.9 MHz

[@Subgunman]

Years ago I put together a Ramsey Subcarrier receiver kit. One simply hooks up the input to the discriminator output of the detector IC. You could tune your receiver to any FM station and then tune either side of the carrier to pick up these "hidden" broadcasts. In the central Ohio market back about 20 years ago Musac ( spelling wrong probably) used these receivers to provide subscription elevator music to business', however they moved to satellite broadcasts to better control music access from hackers and non payers. WOSU ( Ohio State University's FM station ) still provides the radio reading service for the blind on one of their subcarriers. Another very prominent broadcaster in the same market refuses to use the subcarrier system claiming it ruins the quality and fidelity of their music broadcasts.

[@gregoryclemen1870]

I am from cincinnati ohio, and I remember "MUZAC" radio!!!!!

[@7c3c72602f7054696b]

Real neat, I'm gonna have to try this, thanks for sharing.

[@tectalabyss]

Hi Shango. Ho hed reeeply. Thank you for sharing........

[@radiotvphononut]

Many areas have a radio reading service for the blind that is a subcarrier of Public Radio. Eligible patrons are loaned a receiver that will only receive the local Public Radio station and it's subcarrier.

[@jordandoe2768]

I've never "preferred" to hear Ms. Smith but today I will make an exception.

[@jimreardon6599]

57khz used for RDS, 67 and 92 are used for the SCA still in some markets.

[@gazyounglive]

Adding a subcarrier would just be an additional bit of hardware added + a power lead into a 120v outlet, that's if the transmitter didn't already have it (depending on specification and age of transmitter), then just stream the programme online, station broadcasting the subcarrier programme just connects the sound output of the PC to the transmitter subcarrier audio input to the modulator/exciter stage then as long as the chinese service keep their telecoms bills paid, and whatever the host station charges them paid up... they're on. The station will be available online somewhere if you can work out a website address for it... could be coming from outside the US assuming the uplink is internet based.

[@TurboTel68]

I thought it was 'motorboating' at 6:00 before realising it was actually part of the broadcast

[@nykwynes]

The FM station I used to work at used to have a subcarrier that delivered Muzak programming to businesses. It's long gone now due to digital and Internet/satellite delivery.

[@ChristopherSobieniak]

Sad, I feel like I missed out on that!

[@raymondleggs5508]

That radio is what hell sounds like.

[@olegkostoglotov8800]

In case you are wondering what this organization is about I checked out the URL usachineseradio.com . It seems to be provided by, and for members of the Taiwan diaspora in the U.S, not the Chicoms.

[@InsideOfMyOwnMind]

That was a fun one. There is also a digital stream at 57khz for putting the song name on your screen etc. As for SCA, I'll have to play with this on my GRC SDR setup. Also isn't SCA actually an AM subcarrier? That might be what that NB chip is about, an AM demodulator.

[@RadioSpectrumDXer1217]

@@misterhat5823 right! And also for stereo reception you also have a "pilot carrier" at 19 KHZ.

[@Wenlocktvdx]

Interesting. BBC World Service used to use a 50khz ACS (Ancilliary Carrier Service in Australia) on 3RRR, 102.7Mhz. The subscription wasn't cheap. Long gone now but I did manage to hear it on a scanner despite heavy interference from the main programme. 67 and 92 are the two commons ones with a third possibly 57khz. Definitely three were in the Australian regs and a magazine produced a kit with the three subcarriers, not 50 khz though so I couldn't have used it to listen to BBC.

[@grlg2]

Twerko Squerculating - Love it, Cheers.

[@NJRoadfan]

Metrosonix out of Bayonne NJ sells an entire line of these SCA radios still. One service they offer is custom single station radios like this one, but this radio doesn't look like it was made by them.

[@NJRoadfan]

The "avenue" building is where they were. The old street view shows a "Sound City Electronics" sign on that building. Most of the radios they sell look to be off the shelf models modified to tune SCA.

[@VickyGeagan]

In my area WATD in the south shore Marshfield, MA runs a couple of subcarriers with agreements with other stations some are npr stations for their reading network for the blind. The receivers are very economical and affordable to give out to visually impaired people so they can hear audio versions of the local newspaper books and magazines including qst for those with ham licenses

[@Musicradio77Network]

Vicky Geagan In New York City, they have subcarriers around the city including Chinese programming, or some other foreign language programming. This was back when pirate radio stations was illegal to run stuff like Jamaican music or whenever format you called it which gives you a trouble and put you to jail due to the FCC rules.

[@ortizramon]

Can't believe they still do subcarriers but they still there nice set.

[@shana_dmr]

I'm pretty sure their market audience is semi-deaf 100 year old Chinese grandmas that don't know how to use anything else than simple radio;) It's backwards compatible with all old subcarrier radios they were probably selling for last few decades (that mostly still work) so why change it? Especially since it would be a hard sell to all these people to pay for new digital devices that do the same thing.

[@ChristopherSobieniak]

@@shana_dmr There still is an older demographic that isn't up on technology as they keep trying to push it on them.

[@ChristopherSobieniak]

@@shana_dmr It's why I end up paying my dad's bills online as he can't figure it out at his age.

[@MrChief101]

Passing strange! And I've never seen you in such a Puckish mood. Dancing camera=funny.

[@miguelque9102]

The music played at the beginning is a folk song or "oldie" I believe.

[@ChristopherSobieniak]

Given the name of the station, I wouldn't doubt most of it's music reflects an older generation anyway.

[@mrflashport]

I would guess that SCA is much cheaper to deploy than HD Radio, and unless something changed, Ibiquity (now a part of DTS) charged a royalty for all revenue generated from subchannels. That and those who invested in HD facilities want to use it to make money to pay for the huge cost of replacing their analog facilities, whereas SCA is standard fare in just about all existing modern full service FM stations. In Atlanta there are a couple of active SCA programs on the big sticks, but not as much as you have in LA, which would make sense given the much more diverse population and population density. Most of the Korean, Chinese and Vietnamese programming is on AM here. You can buy just about any AM station other than WSB for the past due tax and utility bills here.

[@joshjones3227]

The nice thing about SCA is you can use you existing transmitter and audio gear. In the midwest, public radio ran the 'reading service for the blind' on subcarriers. They had fixed receivers like this for that application. All you had to install to add the service was a Modulation Sciences 'sidekick' which was a SCA generator and limiter. It added the subcarrier to the multiplex signal feeding the transmitter. Unlike HD radio, once you bought the equipment for SCA, there were no ongoing licensing fees.

[@DrewskisBrews]

NOW I understand the precedent for all those Mexican- Chinese restaurants!

[@DasMrOSi]

12:49 - "absolutely" xD

[@RuneTheFirst]

Caught some Korean and Japanese as you tuned. That's more than I expected.

[@balthromaw6305]

LOL the camera dance was so funny

[@ThejasonJaw5442]

Very cool shango that was my thought other sub carrier stations

[@ModMokkaMatti]

Would you get more stations with a full capacitor replacement?

[@trcostan]

I worked at a radio station we had hosted a trucker information service that would send digital data to terminals in trucks in the days before cellular data. It would give them gas prices, road closures and other info ok sure we just passed the baseband signal from our modulator into their box back out into the STL. As a bonus their box gave us RDS information from our Computer system. Song names and what not. The trucker data came off a C-band satellite system. Went to a receiver and came out RS-485 into the encoder box.

[@imark7777777]

It doesn't matter which way you went that stations quite entertaining.

[@Georgew2777]

13:07 That reminds me so much of state run North Korean music

[@richardweinberger2756]

Most excellent lobster seafood restaurant (New Port) on Las Tunas Dr. in San Gabriel. Did you see the ads on that website? Nice Lee Hazlewood tune :)

[@appealingpit]

I love that radio would love to own that.

[@hadireg]

things are gone haywire at 13:30 LOOL you made my day shango066 👍👍😊

[@randyariddle]

I could see how subcarriers are still viable - for specialized services like this or reading for the blind. A receiver like this is a lot cheaper for the listeners than an HD radio.

[@altebander2767]

The 45.6 MHz quartz is used to get 91.2 MHz which is used for the IF-Modulator to get 101.9 MHz down to the normal 10.7 MHz IF.

[@altebander2767]

That way you cannot trim the frontend, it's at a fixed frequency.

[@Moonblade042194]

The 2nd sub carrier station was Japanese and the 3rd was in Korean

[@rkmklz7562]

I always wondered how i can detune a FM radio...to get on these frequencies...I would like to see what would be heard?

[@5speedfatty]

man that up-beat chinese song at about 13 minutes was a JAM!

[@TurboTel68]

Cereal Killer it sounded a bit like Una Paloma Blanca

[@FrantasticFrantasy]

"Dance Hostess" by Han Baoyi (Shazam)

[@DavidRLocke]

Interesting. I was just thinking about either digging up an old SCA subcarrier converter that I had built back in '82, or just making another one. In this area there was a lot of rather interesting stuff besides Muzak to be had. One was LIPS--Legislative Information Programming Service from a station in the capital of NY state. Another in Northampton, MA was programming involving discussions on medial procedures, bulletins, new pharmaceutical products--their virtues and caveats, etc. As for FM stereo, the way that is transmitted is not Left-Right format, but rather Mid-Side. The Mid--aka mono--audio is broadcast in the normal way. The "side" aka left-minus-right signal is DSB suppressed carrier modulated at 38KC center frequency. The 19KC "pilot" frequency is transmitted at a specific phase relationship to the 38KC subcarrier. Your FM stereo receiver takes that 19KC pilot, doubles it and amplifies it as needed, and uses it in a product detector with the DSB signal to render the "side" audio. That is algebraically added in straight and inverted mode to render the left and right program.

[@RyanSchweitzer77]

Yes, that SCA service in Northampton broadcasting medical info that you mentioned, sounds a lot like the PRN (Physician's Radio Network), which was active from 1974 to 1981 when they quit broadcasting due to a lack of revenue (although they might of went back into busiiness sometime later in the 80s, IINM). Most of this resulted from being unable to recoup the costs of the radio receivers, which were distributed free of charge to qualifying doctors and other medical personnel for receiving the service. The company was hoping advertising revenue and their sponsorship by pharmaceutical companies would help pay for the service's operations and receivers issued to physicians, but those expectations fell short--hence PRN's discontinuation. The New York Times in 1981 published an article about their demise: www.nytimes.com/1981/05/21/business/doctor-s-radio-network-to-go-off-the-air-may-31.html

[@tonyblackmon6356]

The CIA and NSA have always used subcarriers for their operations. It goes back quite a few years, and could be used today, as a spy mechanism. I would love to get my hands on one of those just for experiments to see what else it can be used for.

[@Georgew2777]

I would think that the last time the gov't used radios for their operations would be the cold war... Don't they have like encrypted stuff now, sent over the internet?

[@N6MKC]

Some carriers are best left buried/hidden. The asian version of "Una Paloma Blanca" at 13:06 made me gag.

[@digidave3456]

Lol my thoughts exactly!

[@fredrikrnhovde7634]

kzbin.info/www/bejne/o6LEl3pnpLilldk

[@ChristopherSobieniak]

@@fredrikrnhovde7634 Interesting take on the tune.

[@ModMokkaMatti]

Slim Whitman spins in his grave...

[@hhs_leviathan]

No, this song, for a brief moment, somehow made me experience 1974, and I'm a millennial X'D

[@policedog4030]

Tweeter is also there for the ultrasound capability?

[@mrnmrn1]

Thanks a lot for sharing this, it's amazing that this (still) exists. I'm curious if there's any hidden FM subcarrier stations here in Europe. I should be in hurry to find it out, because analog FM broadcasting is kinda shutting down in the EU (very unfortunatelly). Some countries already shut it down. I hope that won't happen to my country (Hungary) any time soon.

[@Veso266]

Hey, Hungary is smart, they had shutdown DAB in favor of FM, I hope other countries follow them

[@tailsdollblack9340]

5:14 the laugh of my nightmares.

[@robertjohnson8551]

The crystal frequency determines the FM frequency of the station. in this case it is 101.9. You subtract 10.7 from the frequency of the station then divide by 2 to determine exactly what frequency the crystal is to be. 101.9 -10.7=91.2 then ÷2=45.6. All you need to do is find other stations that us sca and us the formula to insert the correct crystal frequency to listen to the broadcast. Guess I should have watched the entire video before adding this info, my bad

[@jim8230]

Sounds a bit like shortwave...

[@williamhelms9942]

Ticklish?

[@johnschroeder6288]

You are having WAY too much fun with your dancing camera!!!

[@Silvertone58]

Shango, are you feeling any symptoms such as nausea or headaches after listening to this broadcast?

[@TheArgentAgent]

5:50 is someone playing a Theremin?

[@joeblow8593]

Area code 626 was added after it was split off from the 818 area code June 14 1997 according to wiki. So this radio had to have been produced/sold after that date. en.wikipedia.org/wiki/Area_code_626

[@LyonsArcade]

That Chinese song you played at 13:00 is better than 95% of what's on modern radio and I can't even understand the lyrics. I also can't understand the chinese song's lyrics.

[@craignehring]

Pretty interesting, thanks for posting

[@policedog4030]

Maybe the programming IS there - it is just ultrasonic codes.. Don't let that thing near your SIRI or it will phone home.

[@cardboardboxification]

Police Dog poly tells Siri download and install a virus

[@wdavem]

I like the LaughguaLaughing. Kinda YTP.

[@buddylight2191]

How come it's not Chinese writing on the inside of the noise box??

[@justincase3880]

“Musak” for Chinese stores & restaurants?

[@kg4yhr]

Well that's different never heard of a subcarrior radio

[@billmoran3812]

Scott Kg4yhr72 SCA was used in the 70's to distribute Muzak to leased receivers for stores etc. commercial and royalty free background music.

[@forjimmykimmel9269]

12:48 "absolutely" XD

[@JerryEricsson]

Man, if they were going to set this up in the Dakota's they would have to make the stations in Swedish, Norwegian, and German that would go over very nicely! No spanish or Chinese around here, well we did have one china-man who lived here when I was a kid, he cooked at the same cafe where my mom cooked. He too was a cook. Now we do have one family unit of Chinese folks, they run the local Chinese cafe.

[@FrancisLitanofficialJAPINOY]

Mostly SCMO (SCA) stations in Canada arr mostly in Hindi, Tamil, Punjabi, South Asian languages, Italian, and AM radio station simulcast.

[@rkmklz7562]

How U get on these frequencies.. What do U turn to get on these stations?

[@Explore531]

hahaa I love you move nice dancing! 13:20

[@SteveHacker]

I’m hearing lots of Korean there as well...

[@GeoNeilUK]

Well, they've got to let in some crosstalk, it reminds them of trying to listen to the BBC World Service over the jamming signal back in the old country (as in the station reminds them of the jamming signal) Chinese language station broadcasting as a subcarrier on a Spanish language station. Meh, we've got DAB where there are about four or five Christian radio station (last time I checked we had two from UCB and two from Premier Christian radio) we also used to a have an Islamic radio station on DAB too, but not anymore. I don't even know if subcarrier radio was ever even used in the UK.

[@mlpreinbowfluttersrycutebo6818]

Great job

[@pafoofnic]

Are the repeats called harmonicas?

[@gregorymalchuk272]

I think they are called "station images", but yeah, I think they are harmonics of the station frequency.

[@RadioSpectrumDXer1217]

Sort of like harmonics. They're called images. It actually has to do with the IF (Intermediate Frequency) stages of the radio itself. Its more noticeable with the cheaper police scanners and things like that that have such a huge frequency covereage and do not have a 2nd or even 3rd (double or triple conversion) if stages like a more high end reciever would. How image frequencies work is say for example if there is a signal on 90.7 MHZ and the if of your reciever is 10.7 mhz (the purpose of the if is basically to convert the signal to a "fixed" lower frequency for the purpose of simplifying filtering, improve "selectivity", etc. images however are an unwanted "side effect" of this) but basically the incoming signal on 90.7 MHZ will mix with the 10.7 MHZ if in your reciever and produce an image at 101.4 MHZ. to counter act this more expensive sets will have a 2nd and possibly even a 3rd if stage.

[@HDXFH]

2822M is the audio amp

[@rolfsinkgraven]

interesting did not know it still existed.

[@oroville12345]

The reds are everywhere......

[@grhinson]

They had a picture of the Dali Lama and the Commies hate him so maybe they are alright

[@olegkostoglotov8800]

They are Taiwanese, so Chinese Nationalist, not Communist.

[@russredfern167]

I didn't know this existed

[@Mr_Meowingtons]

do they sell a radio that will just pic this stuff up?

[@dankruger8123]

is there a waterfall of the la market?

[@glasstronic]

Wow, is that can ticklish!

[@rfburns5601]

45.6 MHz X 2 = 91.2 + 10.7 Mhz IF = Receive freq = 101.9 MHz ..... OK I see you figured that out also! @ 15:15 10.7 Mhz above or below with the Local oscillator will yield a 10.7 MHz difference. 112.6 Mhz is the image for 91.2.

[@rompn4x]

I'm sure it's a redundant and annoying question but what camcorder do you use these days?