[Boatanchors] Discone

[jmfranke]

I have used AN/APR-1s and AN/APR-4 receivers off and on for many years 
(decades). Hopefully I will soon have an APR-5 receiver up and running soon 
along with a RDO (shipboard version of APR-4) or two. The receivers are very 
broadband (1-3 MHz depending on the selectivity switch on the APR-4) and not 
very sensitive on the higher bands. The higher band sensitivity is measured 
in millivolts versus microvolts. The lower frequency tuning heads were okay 
for commercial FM broadcasts and VHF/UHF television reception. I could hear 
local aircraft on the military 200-400 band. When used in conjunction with a 
30 MHz panadaptor, the receiver was a crude narrow band spectrum analyzer 
and useful for tuning up local oscillators and low power transmitters. 
Although even then there are drawbacks because the higher frequency tuning 
heads use the harmonic from the local oscillator and the fundamental and 
harmonic image rejection is quite poor. Yet, I still like them!

John  WA4WDL

--------------------------------------------------
From: "Drew P." <drewrailleur807 at yahoo.com>
Sent: Thursday, October 11, 2012 12:22 AM
To: <boatanchors at mailman.qth.net>
Subject: Re: [Boatanchors] Discone

> Mike Hanz wrote:
>
> "I have a friend who told me that he has a 25-1300MHz discone with
> stainless elements for $45."
>
> Not really a boatanchor, but could be used with a multiplicity of 
> boatanchors including the APR-4 which most definitely is a boatanchor. 
> Has anyone here tried to use the APR-4?
>
> Drew
> ______________________________________________________________
> Boatanchors mailing list
> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Boatanchors at mailman.qth.net
>
> List Administrator: Duane Fischer, W8DBF
> ** For Assistance: dfischer at usol.com **
>
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>