[Boatanchors] National Receiver Coils - Additional Details

[Radio AI2Q]

They do indeed sound like HRO-5 coils, Gary (I have that receiver here).

Vy 73, AI2Q, Alex
Member: ARRL, FOC, RSGB, CWops, QRP-L, Antique Wireless Association, New 
England Radio Discussion Society, DXCC Honor Roll, 16ØM DXCC, 8ØM DXCC



----- Original Message ----- 
From: "Gary H. Harmon, Jr." <gharmon at idworld.net>
To: "National " <national at mailman.qth.net>; <nationalradio at yahoogroups.com>; 
"BOATANCHORS2 LIST" <boatanchors at mailman.qth.net>; "Boatanchors3 List" 
<boatanchors at puck.nether.net>
Sent: Wednesday, September 17, 2014 7:17 PM
Subject: [Boatanchors] National Receiver Coils - Additional Details


> First, I apologize for not being more specific regarding the coils.
>
>
>
> All eight National plug-in coils are black crinkle with handles.  Most 
> have
> the two charts fastened behind a clear plastic cover with small screws
> through a metal frame.  Since they are black I suspect they fit the older
> HRO receivers.  Several frames and plastic covers are missing.
>
>
>
> None of the coils have any markings on the aluminum covers.  They look 
> like
> they may have been cleaned.
>
>
>
> Additional info is added to the frequency ranges below.
>
>
>
> 50-100 KC - general coverage
>
> 100-200 KC - general coverage
>
> 180-430 KC - general coverage
>
> .48-.96 MC - general coverage
>
> 1.7-4.0 MC - general coverage and band spread
>
> 3.5-7.3 MC - general coverage
>
> 7.0-14.4 MC - general coverage and band spread
>
> 14-30 MC - general coverage and band spread
>
>
>
> 73,
>
>
>
> gary