sea 16 2016

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

This Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS (Tv/FM Separator or combiner off air TV signals from FM signals FMTVS 75 OHMS NEW) serves to separate the VHF and UHF TV signal FM radio signal into a single cable, or to join VHF and UHF TV signals and FM radio that are in separate cables.

To better explain the functioning, I will speak first of all some of my settings. I have a pair of external antennas in my house, a VHF (Log Periodic antenna VHF PQVT-3004 ProEletronic) and a UHF (Log Periodic UHF outdoor antenna PQ45-1300 ProEletronic), to tune the channels of terrestrial broadcast TV (digital and analog). Both signal passes through a mixer and descends by a conduit.

I initially used this sign only for the tv. But note that the frequency of the FM radio, 88~ 108 MHz, lies between the low and high VHF bands. VHF channels 2 a 6 occupy the 54 MHz a 88 MHz, While the VHF channels 7 a 13 occupy the 174 a 216 MHz. It, in case you're curious, in the space that's left between 108 MHz and 174 MHz for tracks used in aircraft navigation and communication, amateur radio frequency (144 MHz a 148 MHz), radio bands used in services (police, fire department, etc.), among others.

But what matters here, is that a good total band VHF antenna typically is also a good FM antenna, Since not only the frequencies are similar, as the FM range is immediately adjacent to the VHF low and below the high VHF, so that the VHF antennas typically also cover this track.

One day I decided to connect the cable that comes from the antennas directly in my Receiver Yamaha RX-A830 and noticed that it took a good amount of FM radio. But, If I pass the antenna for my VHF/UHF signal amplifier (at VHF Line amplifier / UHF 30dB Bivolt – PQAL-3000 Proeletronic) and then turn it on Receiver Yamaha RX-A830, He goes on to get more FM stations still, but only those who are on lower tracks. Clearly this my amplifier filters the FM frequency, What is normal, as these frequencies could disrupt the TV signal. The lower bands are very close the channel 6 and so are little alleviated, but the highest end up totally attenuated.

The solution I found was to place a signal splitter, like Holland GHS-2, before the amplifier, so that the antenna signal goes directly to the splitter, a output goes to the VHF Line amplifier / UHF and the other goes to the Receiver Yamaha RX-A830. Then I improved the setting, adding a booster I was standing between the splitter and the Receiver. This booster has a key to select if the FM radio signal should be thrown (FM Trap). Just select not to discard it, and then the Receiver went on to pick up even more stations.

O único problema de minha configuração é que divisores como o Holland GHS-2 dividem o sinal com uma perda de -3,5dB. Essa perda seria desprezível após o amplificador, mas antes do amplificador não é legal ficar tendo muitas perdas. Furthermore, apenas dividir o sinal não é a melhor solução, pois o sinal FM será descartado logo em seguida pelo VHF Line amplifier / UHF, e o sinal de VHF e UHF não será aproveitado pelo Receiver.

That is where it comes the Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS. Ele recebe o sinal direto das antenas e em vez de dividi-lo por igual, ele pega as frequências de rádio FM e coloca em uma saída, e pega as frequências de TV VHF e UHF e coloca na outra saída. Infelizmente não encontrei especificações para saber qual é a atenuação por conta da perda de inserção, mas certamente é algo abaixo do -3,5dB, provavelmente na faixa de -0,5dB a -1,5dB, como é comum em diplexers, for example.

Não consegui encontrar nenhum dispositivo deste tipo no Brasil, então precisei verificar no exterior. I found Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS in Amazon and no eBay, sendo que na Amazon estava mais barato, então minha compra foi lá. O pacote veio pela iParcel (da UPS) até o Brasil e depois foi encaminhado por PAC. Chegou em apenas 12 days. O depósito para impostos foi US$ 15,50, more to Amazon reembolsou US$ 5,50 no dia seguinte à chegada do pacote, o que me leva a crer que por algum motivo não foi cobrado ICMS ou não foi cobrado imposto sobre o frete. No Brasil se paga tantos impostos que é até uma surpresa quando a extorsão é um pouco menor que a esperada, apesar de ainda muito alta.

Installed Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS and it is working perfectly. Não sei quantificar o quanto ele melhorou o sinal de TV ou de FM, pois foram várias mudanças praticamente juntas. Ajustei plugs que estavam ruins, trocamos o combinador dos sinais de VHF e UHF (falarei dele no próximo artigo), mudamos o posicionamento das antenas e o resultado geral foi uma melhora, mas não dá para saber qual foi a contribuição de cada elemento.

Por fim, vale informar que, segundo a descrição na Amazon, the Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS também atua como combinador, então quem tem uma antena exclusiva para FM e outra(s) para TV, pode combinar o sinal delas no mesmo cabo usando este dispositivo. It is not my case, então não testei essa alternativa.

Check out some photos from the Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS:

Pacote da Amazon com o Separador ou Combinador de TV e FM 75 Ohms Cabletronix FMTVS

Pacote da Amazon com o Separador ou Combinador de TV e FM 75 Ohms Cabletronix FMTVS

Pacote da Amazon com o Separador ou Combinador de TV e FM 75 Ohms Cabletronix FMTVS

Pacote da Amazon com o Separador ou Combinador de TV e FM 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS, em sua embalagem e papelada da Amazon

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS, em sua embalagem e papelada da Amazon

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS, on its packaging

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS, on its packaging

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS, on its packaging

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS, on its packaging

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS

Estas são as informações de rastreamento do pacote fornecidas pelo i-Parcel:

EventEvent DateCityState / ProvinceCountry Code
Delivered3/3/2016 10:49:00 PM[Removed]BR
Out for delivery3/3/2016 5:29:00 PM[Removed]BR
Processed through transit hub2/29/2016 1:40:00 PMGuarulhosBR
Completed customs clearance process2/26/2016 7:38:00 PM
Package arrived in the destination country and is awaiting release from the Customs clearing agency2/26/2016 3:28:00 PMBR
Exported i-Parcel and in transit to country of destination2/23/2016 9:55:00 PMLos AngelesUS
Received at i-Parcel2/22/2016 5:34:58 PMLos AngelesUS
Your shipment is destined for a country that requires information prior to arrival. Please contact UPS i-parcel at [email protected]2/20/2016 6:23:33 AMEdisonUS
Package details received electronically from Seller2/20/2016 6:23:12 AM

E estas são as informações de rastreamento fornecidas pelos Correios:

DataLocalSituation
03/03/2016 17:49CSD [Removed]Delivery Effected
03/03/2016 12:29[Removed]Out for delivery to the recipient
01/03/2016 14:00CTE CAMPINAS – Valinhos / SPRouted
In transit to CDD [Removed]
29/02/2016 15:59VILLA MARIA CTE – Sao Paulo-SPRouted
Referred to CTE CAMPINAS – Valinhos / SP
29/02/2016 08:40AGF PRACA DECEMBER EIGHT – Guarulhos / SPRouted
In transit to CTE MARIA VILLAGE – Sao Paulo-SP
26/02/2016 19:18AGF PRACA DECEMBER EIGHT – Guarulhos / SPPosted after the agency's time limit
Object subject to routing the next business day

Por fim, I leave the summary table of purchase:

Product Name:Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS
Name Original:Tv/FM Separator or combiner off air TV signals from FM signals FMTVS 75 OHMS NEW
Store:Amazon
Value:US$ 9,16
Current value:US$ 9,16
Payment Method:Cartão de Crédito Mastercard Pré-Pago da Payoneer
Shipping Type:AmazonGlobal Standard Shipping
Shipping Fee:US$ 7,14
Package Home Country:USA
Purchase Data:19/02/2016
Submission Date:20/02/2016
Data Delivery:03/03/2016
Time in Transit:12 days
Declared content:8544.42.9000 – telephony cable – New (count 1)
Type Marked Content:Gift
Declared Value:US$ 9,16 + US$ 7,14 = US$ 16,30
Taxed:Yes
Taxable Value:?
Tax Value:US$ 10,00
And I'm ending here with a positive assessment to the Tab or TV and FM Combiner 75 Ohms Cabletronix FMTVS (Tv/FM Separator or combiner off air TV signals from FM signals FMTVS 75 OHMS NEW) and another positive review for Amazon. Do not forget to share the article with your friends if you like. Good fun and good shopping. 🙂

Permanent link to this article: https://www.skooterblog.com/2016/03/16/separador-or-combiner-of-tv-and-fm-75-Ohm-cabletronix/

Leave a comment

Be the first to comment!

Notify about
Avatar
wpDiscuz