CZE T251 0-25W Power Adjustable Professional FM Stereo Broadcast Transmitter

In this video I'm gonna show you the CZE T251 0-25W Power Adjustable Professional FM Stereo Broadcast Transmitter.
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The Video Content has been made available for informational and educational purposes only
how to setup fm transmitter
How to Use a FM Transmitter
CZE-T251 25Watt FM transmitter is a professional FM transmitter newly released by CZHFM Co.. It’s featured by one button control for all functions. It has VSWR protection, temperature protection, electronic volume adjusting,equipped with low pass filters. It’s applicable in many places, such as stadium, county radio station, community radio station, motel, public square,church, theater and so on.
Technical Specification
Functions and features:
-215mm x 165mm x 54mm chassis
-Power up to 25 watts
-Using digital phase-locked loop frequency synthesizer (PLL) technology, ultra-high frequency stability.
-Have the standing wave protection, and overtemperature protection.
-Output power from 0 ~ 25W continuously adjustable
-Using the RF power lock feature
-Show the timely output power and various working status.
Electrical parameters:
RF part:
Operating frequency: 87.5 ~ 108MHz
Output power: 0-25Watt (continuously adjustable)
Output Impedance: 50 ohm
Spurious and harmonic radiation:-60db
Audio part:
Frequency response: 50 ~ 15KHz (3db)
Distortion: 0.2%
Left and right channel separation: 45db
LINE IN connector: RCA two-channel Cinch (stereo)
The microphone interface: 6.5mm
Microphone Type: Dynamic microphone (electret microphone is not applicable)
Power supply part:
Rated working voltage: DC 12~13.8V 5A/6A
Maximum power consumption: 60W
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[@DimasSantana101]

I have a good question, how many km does this transmitter reach on average at high power at 25 watts, thank you for your answer!!

[@Jhonataflp]

It is a good fm transmitter, I use it with RádioBoss software/ VST plugins Stereo tool with RDS just configure the audio card to 192 kHz to send text/ VST JB Broadcast, a true professional broadcaster, my computer motherboard b75a i5 3570 16gb memory ram, my friend this transmitter cze t251 25 watts Transistor rd35hup2 which can reach up to 50w when I add 45 watts its temperature increases from 38° to 45° degrees depending on day or night it reaches 40° 45° at night it it is at 37° degrees, the only negative point is that the mini cooler is connected directly. To solve the heating, just place another cooler under the transmitter to cool it and it stays at 22° degrees, I use it at 45 watts without any problems. Now when it has 25 or 35 watts, its temperature drops by 30° to 35° until its mini cooler turns off because it is cold. I use a 13v 8 amp switched source.

[@Istoryahetvvlogs]

@Jhonataflp hi...Thank you for sharing your extensive experience with the CZE T251 FM transmitter and how you've successfully integrated it into your broadcasting setup. It's great to hear that you're achieving such high-quality output with RádioBoss software, VST plugins, Stereo tool with RDS, and VST JB Broadcast. Your insight into managing the transmitter's temperature by adding an extra cooler is a valuable tip for others who may be using it at higher power levels. It's evident that you've optimized your setup well. Your comment will undoubtedly be helpful to others considering this transmitter. If you have any more insights or tips to share, please feel free to do so. Thanks again for your contribution!

[@blablablaqwd]

Does it also have a build in MPX Stereo Encoder? I couldn't find any information about this. It accepts Stereo, but the interesting detail is if it makes true MPX and what the rs232 port is capatible of. Thank you!

[@gonxa1000]

how do u get 50w ? did u say same transistor ? any change in software o display?

[@EastAngliaUK]

nice set up I would like a 25w I use a 7 at the mo. did you put the aerial outside? though inside my 7 can still get about 1 mile in a town which is more than enough.

[@nicoschadjidemetriou4373]

Very good video my dear. Very nice and clever TX. I tested the coaxial cable they supply is useless. Is written low loss but is high loss.If you put 20W on the 8m cable connected to 50 Ohms dummy load-wattmeter it shows only 14 watts. I heard this and from others about Chinese coaxial cables. I like your configuration preamplifier etc.They are very good.

[@radioliberland7846]

I recomend you to use RG-213 cable, or even far better RG-400 (LMR-400). They are really low loss cables. Antenna (GP 1/4) supplied RG-58 is very lossy cable. Best use for 5 or less meters distances transmitter to antennna,....

[@griffinfisher7319]

What kind of coax cable do you recommend running from transmitter to antenna? I have about a 50 ft reach I would have to go

[@Istoryahetvvlogs]

@griffinfisher7319 When connecting the CZE T251 0-25W FM Stereo Broadcast Transmitter to an antenna, it's important to use a coaxial cable that is suitable for your specific requirements. For a 50 ft reach, there are a few factors to consider when selecting the appropriate coaxial cable: 1.Cable Type: RG-58/U or RG-8X are commonly used coaxial cables for shorter distances and lower power applications. They offer good performance and are relatively affordable. For longer distances or higher power applications, you may consider using RG-213/U or LMR-400 coaxial cables, which provide lower signal loss. 2.Impedance: Ensure that the coaxial cable you choose has a matching impedance to your transmitter and antenna system. FM transmitters typically use 50 Ohm impedance, so select a coaxial cable with a 50 Ohm characteristic impedance. 3.Signal Loss: Consider the signal loss over the cable length. As the cable length increases, signal loss also increases. Look for a coaxial cable with lower attenuation ratings (expressed in dB per 100 ft or dB per meter) to minimize signal loss. 4.Connector Compatibility: Check the connectors on your transmitter and antenna to determine the appropriate connector type for the coaxial cable. Common connector types include BNC, N-Type, and PL-259. Based on these considerations, a suitable choice for your 50 ft reach could be RG-8X coaxial cable. It offers good performance, reasonable signal loss, and is commonly available. Ensure that the cable is properly terminated with connectors that match the transmitter and antenna connectors.

[@lilah66]

Mine wont go below .6 watt. If I try to get anything less I get SWR 9.9 and PO 0. The seller told me this is normal. Should I send it back ? Above .6 watt it works well.

[@Istoryahetvvlogs]

Hi @lilah66 I appreciate your comment and concern. It's not typical for a transmitter to have an SWR of 9.9 and PO of 0 when trying to lower the power output. While some variation in power output is expected, it shouldn't be to this extreme. Since it's not performing as expected, I would recommend reaching out to the seller for further assistance or considering a return or exchange if the unit is still under warranty. It's essential to have a transmitter that meets your needs and operates within normal parameters. I hope you can get this issue resolved to your satisfaction.

[@TheSudiptheory]

Which RF chip used in this transmitter?

[@James-wn9ec]

Pre-emphasis delay? Fixed?

[@DesmondNoel]

Can it run 24/7

it can receive a MPX stereo encoded signal from a external processor?

[@helionimbu9247]

quanto tá custando ,o transmissor estou intereçado,como e a forma de pagamento? e como faz a entrega ???

[@leosmaralbertovaz948]

Boa tarde amigo! Esse trânsmissor de rádio FM CZE-T251 de 25wts, com uma antena boa externa, poderá chegar o sinal até quantos kilômetros??? Ele é profissional e tem boa qualidade???

[@Istoryahetvvlogs]

@leosmar lindão covering range about 5-8KM outside in the open area.

[@igorshakov9878]

Автор, возможно ли КРАТКОВРЕМЕННО (до , 5 сек) перебить трансляцию местной ФМ станции речью? Интересует чисто технический момент, про юр последствия в курсе.

[@chuckbrush4777]

What causes the PO: 0.0 SWR: 9.9 failure? Which component causes this? Can it be repaired?

[@Istoryahetvvlogs]

@chuckbrush4777 Hi.. It's difficult to determine the exact cause of the PO: 0.0 SWR: 9.9 failure without more information about the specific device you're referring to. However, a high SWR (standing wave ratio) reading can indicate that there is a mismatch between the transmitter and the antenna, which can be caused by a variety of factors such as a damaged coaxial cable or an incorrectly tuned antenna. A PO (power output) reading of 0.0 may indicate a problem with the transmitter's power supply or output stage. As for repairing the issue, it depends on the specific cause of the failure. If it is a problem with the coaxial cable or antenna, replacing those components may be necessary. If it is a problem with the transmitter itself, it may require more extensive repairs or even replacement. I recommend consulting with a professional technician who has experience with broadcast transmitters to diagnose and repair the issue.

[@Fareskhachan]

Good antenna SSwr 1.0

[@sv2tcb]

How are you transmitting 15w inside your house the swr must have killed the transmitter?

[@Istoryahetvvlogs]

@Nikos official channel hello.. Yes, this is not advisable inside the house, I just tested it for a few minutes and I transferred the antenna outside.

[@sv2tcb]

@@Istoryahetvvlogs thank you very much for the response. Have a nice day

[@silviojustinopeixoto5517]

Quanto sai amigo um transmissor de fm esse ai dá marca cze-t251 fm stereo

[@SocaFirst]

Hey good day how does it sound

[@Istoryahetvvlogs]

It's great!

[@elexcerayuban796]

di ba masyado nag iinit? na try mo boss ng 24HR broadcast? how is the audio output quality?

[@Istoryahetvvlogs]

@elexcer ayuban Hi sir for educational purpose lang po eto... hindi ko po na e try 24HR broadcast by da way pag full power umiinit talaga yan..mas ok pag aircon yung room...about sa audio quality ok naman po.

[@yungman3033]

can i add another or extra fm amp to 15w,25w or 30w transmitter ?

[@Istoryahetvvlogs]

@YUNG MAN no need to add extra fm amp.

[@yungman3033]

@@Istoryahetvvlogs can this transmitter be used for community radio ?

[@Ontalktv247]

hello guy Am Damilare by name I need a transmitter for a community radio how can I go about it

[@Istoryahetvvlogs]

@IMPACT2 TELEVISION Hi... ebay.to/3SfjG0W

[@bobnelsonfilho962]

A antena do de 15 tem o mesmo conector do de 25w

[@Istoryahetvvlogs]

@bobnelsonfilho962 Hello yes....

[@3dsmaxrocks699]

Saw this model online and it's says it's 220 volts??

[@Istoryahetvvlogs]

@3dsmax rocks yes 220V

[@3dsmaxrocks699]

@@Istoryahetvvlogs so in the USA we have 120 voltage...not 220 unless it's a dryer

[@Istoryahetvvlogs]

@3dsmax rocks The ac power supply will work from 100 V up to 240 V range.

[@3dsmaxrocks699]

@@Istoryahetvvlogs oh okay thanks!

[@unbeatable4603]

Bossing magkano ang bili mo sa transmitter mo?

[@Istoryahetvvlogs]

@UNBEATABLE hello po $487.18 taas pa ng price noon... Actually for educational purpose lang po ito ..bawal mag transmit above 1 watt.

[@HeriAcay-zr8dn]

Cek harga bos

[@obiterdictum3021]

i got the 7 watts transmitter... looking for more range.../I\

[@Istoryahetvvlogs]

CZE-T251 transmitting 5-8KM in the open area.

[@elexcerayuban796]

you want to add that with booster transmitter 250w. it will be good broadcast range.

[@joenicholas449]

@@elexcerayuban796 what's that and does it work with the 7w

[@nicoschadjidemetriou4373]

@@Istoryahetvvlogs Years ago I tested one simple TX giving 800mW(0.8W) and was heard 3km with a dipole 75 ohm outsite.

[@radioliberland7846]

Slolution is to buy low loss cable: for up to 10 meter RG-213 is good. For longer distance RG-400 (LMR-400,) TX to antenna. Also, try to find more efficient antenna, 7/8 lambda GP antenna is very efficient, or directional antennas are highly efficient. If your antena efficiency is 1,5 DB it is your transmitter power 1X. If efficiency is 3 DB you will have from 7W TX power actually 14 W radiated power. If you have 6 DB efficient antenna you wil radiate 28 W emitted power,....Professional transmitter sites uses antenna systems, or stacked 2,4,6,8 antennas combined.

[@damianjr.amolat3445]

Boss gusto sana ako mgkaroon ng FM station dto sa barangay nmin pwede ba eto or may mga requirements pa

[@Istoryahetvvlogs]

@Damian Jr. Amolat hello po.. If you have plan to put up FM station go to nearest NTC office muna sir may mga requirements pa po...

[@damianjr.amolat3445]

@@Istoryahetvvlogs Salamat sa reply boss. D pa pwed kung katuwaan lng na wlang permit mghanap lng ako ng frequency na available

[@Istoryahetvvlogs]

@Damian Jr. Amolat Welcome po....Yes hindi pwede po mag broadcast ng walang permit or license sa NTC.

[@damianjr.amolat3445]

@@Istoryahetvvlogs salamat boss sa agarang pag reply. Saan mo pla ginamit yang sau boss?

[@Istoryahetvvlogs]

Sa video na to for educational propose lang po. hindi ginagamit hindi basta basta mag put up ng FM transmitter kahit low power..

[@jerryeverygo6851]

Pila ka km.maabot boss?

[@Istoryahetvvlogs]

About 5-8KM in the open area.

[@jayakumarnatarajan2179]

Hello.goodclarity.audio.❤

[@princetanglao8204]

where can i get this ?

[@Istoryahetvvlogs]

@princetanglao8204 hello...You can purchase the CZE T251 0-25W Power Adjustable Professional FM Stereo Broadcast Transmitter from various online marketplaces such as Amazon, eBay, and AliExpress. You can also check with your local electronics stores or radio equipment suppliers if they carry this product. However, please ensure to check the legality and regulations of broadcasting in your country before making any purchase or usage of this device.

[@unbeatable4603]

Magkano ang kuha mo sa transmitter bossing

[@Istoryahetvvlogs]

@UNBEATABLE hello po $487.18 taas pa ng price noon... Actually for educational purpose lang po ito ..bawal mag transmit above 1 watt.

[@elexcerayuban796]

bro musta broadcast mo? ano name mo sa FB? mag inquire lang ako.

[@Istoryahetvvlogs]

@elexcer ayuban hello po for educational purpose lang po ito. hanggang testing lang po...so far ok naman quality nya..

[@hanzu2714]

Lazada or shopee?

[@Istoryahetvvlogs]

@Max Max Hi... shopee

[@strippi8284]

The antenna I have, FMuser doesn't fit this. What type of antenna do I need?

[@Istoryahetvvlogs]

@strippi8284 Hello there! In order to use an antenna with the CZE T251 FM transmitter, you will need an antenna that is designed specifically for FM broadcasting. There are many types of FM antennas available, but a simple dipole antenna or Yagi antenna would work well for this purpose. You can try searching online for FM broadcasting antennas or consult with a local radio equipment supplier to find a suitable antenna that will fit your needs. Just make sure to check the frequency range of the antenna to ensure that it matches the frequency range of your transmitter. I hope this helps!

[@PresidenteHollanda]

Filter coils in the same direction ... so not done. They 'see' each other, not that they should be place under 90 degrees from each other always to avoid 'magnetic coupling' and more spurs going onto your antenna. Power reading with any spectral view is useless, this reading giving a sum of all 'garbage' you also transmit.

[@Istoryahetvvlogs]

@PresidenteHollanda Hi..Thank you for sharing your insights about filter coils and their placement. It's true that placing them in the same direction can cause magnetic coupling and more spurs on the antenna. Ideally, they should be placed under 90 degrees from each other. As for the power reading, you're right that it can be influenced by the 'garbage' or unwanted signals being transmitted. It's important to use a spectral view to get a more accurate reading of the signal quality. Thank you for your comment and have a great day!

[@puspasapam1212]

Hallo fm 15watt rupis 4000 ok

[@puspasapam1212]

Finish fm 15watt rs 5000 ok

[@LheodaDjTechTv]

watching and sending support boss new friend pa hug ,wait ko ang yung pagbabalik

[@tonywestvirginia]

Why do you not tell the story???

[@unbeatable4603]

Subscribed aq bossing