[BC] Inexpensive exciter

[DANA PUOPOLO]

I had a QEI 675 at a class D college station start throwing spurs on the
aircraft band! Pilots on approach to Logan Airport in Boston were hearing
reggae on their radios! The FCC came and ordered the station off the air. They
wound up getting a 1000 dollar fine too!
Needless to say, they bought a new Bext transmitter the very next day!

-D 

------ Original Message ------
Received: Sun, 22 May 2005 10:16:42 AM PDT
From: "Fred Morton" <radioguy at airmail.net>
To: "Broadcast Radio Mailing List" <broadcast at radiolists.net>
Subject: Re: [BC] Inexpensive exciter

Be careful, though...I've had a 675 in service which has twice gone bonkers 
(read, spurs and garbage all up and down the band) and had to be sent back 
to the factory for refurbishment and repair. There are other, better and 
more modern exciters out there. You might check with Nicom or Bext, for 
example. I've used the Nicom stuff and have had good luck with their 
products.

Fred Morton
----- Original Message ----- 
From: "Ron Castro" <ronc at sonic.net>
To: "Broadcast Radio Mailing List" <broadcast at radiolists.net>
Sent: Sunday, May 22, 2005 11:54 AM
Subject: Re: [BC] Inexpensive exciter


>I would look for a used QEI 675 or 695.  They're reliable, sound good and 
>run 20 watts out.  They're also pretty cheap on the used market.
>
> Also, PTEK sells a 5-30 watt  for $1,200.  Check 
> http://www.ptekpower.com/new_page_2.htm .  I've never used one, so I can't 
> speak from experience about them.
>
> Ron Castro
> Chief Technical Officer
> Results Radio, LLC
>
>
> ----- Original Message ----- 
> From: "Tom Taggart" <tpt at eurekanet.com>
> To: <broadcast at radiolists.net>
> Sent: Sunday, May 22, 2005 6:56 AM
> Subject: [BC] Inexpensive exciter
>
>
>> We built a non-com for a local school district about 4 years ago. 900 
>> watts: 4 bay ERI driven by a 600 watt silicon valley
>> amp (similar to what they used as solid state IPA's for some 
>> transmitters) driven by an Continental 802A.  Unfortunately, a
>> weakness of the 802 is that it uses a darlington pair to control the 
>> output power. When this transistor shorts, the output
>> goes to the full fifty watts, frying the input transistors in the power 
>> amp.   So we put a smaller fuse in.  And for some
>> reason the MJ3001's like to blow frequently at this site.
>>
>> Anyhoo, after replacing a MJ3001 for about the 3rd time, we're discussing 
>> getting a new exciter.  The 802 would be retired
>> to service in a translator.  Need about 15 watts to drive the Silicon 
>> Valley, so would be looking for an exciter with about
>> 20 watts.  Obviously doesn't need to be digital or very fancy, looking 
>> for something under $2K.  Any suggestions?
>>
>>
>>
>>
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>
>
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