[Milsurplus] Beam Filter Info

[WA5CAB at cs.com]

Well, no.  If the receiver is designed to drive a loudspeaker directly 
(without a matching transformer on the speaker) that would be voice coil output. 
 But if it works, it works.  :-)

In a message dated 4/5/2010 7:25:17 AM Central Daylight Time, 
cwopr at embarqmail.com writes: 
> I think thats right. It requires a 6 ohm spkr and the phones output is 
> across a 27 ohm resistor thats across the output of the audio trans. I don't 
> know if that translates into the values you mention. The filter does work 
> very nicely even at the 1020 cy output and there is plenty of audio in the 
> cans. Breck, K4CHE, gave me a link to all you ever wanted to know about 
> these filters. So I'm set to modify if I want to or use as is (prefered).
> 
>  Thanks Bob and Breck for the info...73 de Bill K4JYS
> ----- Original Message -----
> From: WA5CAB at cs.com
> To: cwopr at embarqmail.com
> Cc: milsurplus at mailman.qth.net
> Sent: Sunday, April 4, 2010 7:34:19 PM GMT -05:00 US/Canada Eastern
> Subject: Re: [Milsurplus] Beam Filter Info
> 
> Bill,
> 
> Doesn't the HQ-150 have Low-Z output?  Depending upon vintage and service, 
> that meant either 250 ohm or 500/600 ohm.  Which the Navy filter would 
> match.  Hi-Z means 4000 ohms or higher.  Usually 4000 for receivers and 
> 7000/8000 for audio accessories.
> 
> In a message dated 4/4/2010 2:37:46 PM Central Daylight Time, 
> cwopr at embarqmail.com writes: 
> 
> 
> >> Tnx for that info. It seems to be quite usable as is and doesn't reduce 
>> the audio very much (at least on the HQ-150)...Bill
>> 
> 
> 

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480