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[AMPS] Roller inductors

To: <amps@contesting.com>
Subject: [AMPS] Roller inductors
From: RFpower@radiodan.com (Radiodan W7RF)
Date: Thu, 3 Dec 1998 02:51:38 -0800
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There has been much babble recently about the bad points of roller
inductors. I had a Collins KWM-1 that had terrible roller inductors for
tuning. They were always intermittent and touchy to tune.  Of course that
design was 40 years ago.

If you've never seen a roller coil up close or are curious about one that
works take a peek at http://radiodan.com/Henry/parts/roller_coil.htm
I just spent the last few hours cleaning a half inch of moss from the coil
just to be able to take the pictures! I had to shoot the pictures quick,
before the moss grew back! (hihi)

73, Dan Magro W7RF, (member SCDXC, SCCC)
Rugged, Reliable Henry HF Amps are "Instant on" for RF Power now!
DXers/Contesters/Ragchewers get your HENRY from RADIODAN for LESS!
***Subscribe to the HENRY reflector at www.qth.net ***
www.radiodan.com    RFpower@radiodan.com
A trip to our web site is worth the click!



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<!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN">
<HTML><HEAD>
<META content=3D'"MSHTML 5.00.0910.1309"' name=3DGENERATOR>
<META content=3D"text/html; charset=3Diso-8859-1" =
http-equiv=3DContent-Type></HEAD>
<BODY bgColor=3D#ffffff>
<DIV><SPAN class=3D60173010-03121998><FONT face=3D"Comic Sans MS" =
size=3D2>There has=20
been much babble recently about the bad points of roller inductors. I =
had a=20
Collins KWM-1 that had terrible roller inductors for tuning. They were =
always=20
intermittent and touchy to tune.  Of course that design was 40 years=20
ago.</FONT></SPAN></DIV>
<DIV>&nbsp;</DIV>
<DIV><SPAN class=3D60173010-03121998><FONT face=3D"Comic Sans MS" =
size=3D2>If you've=20
never seen a roller coil up close or are curious about one that works =
take a=20
peek at <A=20
href=3D"http://radiodan.com/Henry/parts/roller_coil.htm";>http://radiodan.=
com/Henry/parts/roller_coil.htm</A></FONT></SPAN></DIV>
<DIV><SPAN class=3D60173010-03121998><FONT face=3D"Comic Sans MS" =
size=3D2>I just=20
spent the last few hours cleaning a half inch of moss from the coil just =
to be=20
able to take the pictures! I had to shoot the pictures quick, before the =
moss=20
grew back! (hihi)</FONT></SPAN></DIV>
<DIV>&nbsp;</DIV>
<DIV><FONT face=3D"Comic Sans MS"><FONT size=3D3>73, Dan Magro <FONT=20
face=3D"Comic Sans MS">W7RF, (member <FONT color=3D#000000 =
face=3D"">SCDXC,=20
SCCC</FONT>)<BR>Rugged, Reliable Henry HF Amps are &quot;<FONT=20
color=3D#ff0000>Instant on</FONT>&quot; for RF Power=20
now!<BR>DXers/Contesters/Ragchewers get your HENRY from RADIODAN for =
<FONT=20
color=3D#ff0000>LESS! <BR></FONT><FONT color=3D#ff0000>***Subscribe to =
the HENRY=20
reflector at <A href=3D"http://www.qth.net";>www.qth.net</A>=20
***</FONT><BR></FONT></FONT></FONT><FONT size=3D3><FONT face=3D"Comic =
Sans MS"><A=20
href=3D"http://www.radiodan.com"=20
target=3D_blank>www.radiodan.com</A>&nbsp;&nbsp;&nbsp; <A=20
href=3D"mailto:RFpower@radiodan.com";>RFpower@radiodan.com<BR></A></FONT><=
FONT=20
face=3D"Comic Sans MS">A trip to our web site is worth the=20
click!<BR></FONT></FONT></DIV>
<DIV>&nbsp;</DIV></BODY></HTML>

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