[Boatanchors] Thunderbolt Amplifier

Thu Dec 22 20:27:13 EST 2016

Same buddy but I do have lots of buddies.  He told me Courier when he meant
Thunderbolt.

73,

Gary H. Harmon, Jr. - K5JWK - HAM Radio and ATARI Archaeologist
6003 Archwood
San Antonio, TX 78239-1504
(210) 657-1549 <home>
(210) 884-6926 <cell and text>
(210) 657-1549 <FAX with prior notification>
gharmon at idworld.net

"Retirement = Every day is a Saturday except Sunday"
http://www.grissomroadcoc.org

-----Original Message-----
From: manualman at juno.com [mailto:manualman at juno.com] 
Sent: Thursday, December 22, 2016 7:05 PM
To: gharmon at idworld.net
Cc: boatanchors at mailman.qth.net
Subject: Re: [Boatanchors] Thunderbolt Amplifier

So is he looking for both or one or the other? Or do you have two buddies?

For AM, the Courier is probably a poor choice for the Ranger. A pad would be
required between the Ranger and Courier to drop the drive power down or the
Ranger final would have to be run on the low voltage supply. One could also
drop the screen voltage down to reduce Ranger output. The best you can do
with the Courier safely running 811A's would be around 100 watts carrier.

The Thunderbolt is a bit better on output on AM. Should be able to get
around 200 watts carrier. Depending on how you run it, a pad may also be
required between the Ranger and Thunderbolt. External relay switching needs
to be provided to switch the cut-off bias.

I have one of each but I generally use low power (25 watts or less) SSB
transceivers to drive them. An Apache or DX-100 on AM puts out as much
output power as a Ranger/Courier within a few watts.

Pete, wa2cwa

Date: Thu, 22 Dec 2016 16:38:18 -0600
Subject: [Boatanchors] Courier Amplifier
Message-ID: <[email protected]>

My local restoration buddy is looking for a clean Courier amplifier to drive
with his Ranger.  If you have one for sale or know of one please let me
know.

On Thu, 22 Dec 2016 18:10:32 -0600 "Gary H. Harmon, Jr."
<gharmon at idworld.net> writes:
> My local restoration buddy is looking for a clean Thunderbolt  
>amplifier to  drive with his Ranger.  If you have one for sale or know 
>of one  please let  me know.
> 73,
>Gary H. Harmon, Jr. - K5JWK - HAM Radio and ATARI Archaeologist