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Hello GB,
So you drop from 20 Gp (db) at 30 MHz to 8 Gp (db) at 100 MHz Would not have been my choice. BTW, is your equipment FCC type accepted for USA usage on the commercial FM frequencies (as required) Regarding the device choice. I think the designers reason for using the THA15 is that he found a very inexpensive source for the device and he already had a 40w exciter in production. It was a suitably inexpensive device. FCC approval not required if used outside the US. We are not based in the US. My company is a re-seller for NRG products among others. However frequency stability, harmonic attenuation and spurious products would probably meet type approval spec in the US. Not sure how tough your EMC and or electrical safety requirements are but it would probably meet those to after looking at some of the budget end equipment that has FCC type acceptance. I just love those Part-15 Talking House transmitters. Does the FCC still allow self approval on certain equipment? -- Philip de Cadenet G4ZOW Transmitters 'R' Us http://www.transmittersrus.com |
"Philip de Cadenet" wrote in message
... Hello GB, So you drop from 20 Gp (db) at 30 MHz to 8 Gp (db) at 100 MHz Would not have been my choice. BTW, is your equipment FCC type accepted for USA usage on the commercial FM frequencies (as required) ----------------------------------- Regarding the device choice. I think the designer's reason for using the THA15 is that he found a very inexpensive source for the device and he already had a 40w exciter in production. It was a suitably inexpensive device. FCC approval not required, if product is used outside the US. We are not based in the US. My company is a re-seller for NRG products among others. However frequency stability, harmonic attenuation and spurious products would probably meet type approval spec in the US. Not sure how tough your EMC and or electrical safety requirements are but it would probably meet those to after looking at some of the budget end equipment that has FCC type acceptance. I just love those Part-15 Talking House transmitters. Does the FCC still allow self approval on certain equipment? -- At one time, you could call the FCC Field Office and approach the situation like FAA handled non-commercial built planes. I do remember in the 1970s that the FCC would provide this approval from the Field Engineers. Many things changed in the 1980s - in the "name of progress and deregulation" - but I believe "self approval" was NOT one of them. G. Beat w9gb |
"Philip de Cadenet" wrote in message
... Hello GB, So you drop from 20 Gp (db) at 30 MHz to 8 Gp (db) at 100 MHz Would not have been my choice. BTW, is your equipment FCC type accepted for USA usage on the commercial FM frequencies (as required) ----------------------------------- Regarding the device choice. I think the designer's reason for using the THA15 is that he found a very inexpensive source for the device and he already had a 40w exciter in production. It was a suitably inexpensive device. FCC approval not required, if product is used outside the US. We are not based in the US. My company is a re-seller for NRG products among others. However frequency stability, harmonic attenuation and spurious products would probably meet type approval spec in the US. Not sure how tough your EMC and or electrical safety requirements are but it would probably meet those to after looking at some of the budget end equipment that has FCC type acceptance. I just love those Part-15 Talking House transmitters. Does the FCC still allow self approval on certain equipment? -- At one time, you could call the FCC Field Office and approach the situation like FAA handled non-commercial built planes. I do remember in the 1970s that the FCC would provide this approval from the Field Engineers. Many things changed in the 1980s - in the "name of progress and deregulation" - but I believe "self approval" was NOT one of them. G. Beat w9gb |
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