[ARC5] (1) Broadcast Rx for Auction; (2) Wanted - a circuit for homebrew modulator.

[Leslie Smith]

  Dear List Members,
  I note the following item on an auction list:   (see below)

 ARC-5 BC-459A transmitter, 7-9.1 Mhz.
 ARC-5 BC-696A transmitter, 3-4 Mhz., new old stock in original box  
 Box lot, ARC-5 BCST rec., ARC-5 rec. 3-6 Mhz. & ARR-2 rec. mount, parts
 missing  <----------note
 Box lot, ARC-5 rcvr w/power supply, Browning FM tuner, Kiethly DVM,
 audio gen., meters, etc.

 I take "BCST" to mean R-24 or 500 to 1500kHz type "command" receiver.
 The sale will be in New Jersey.  Nothing to do with me ....
 I found the catalog on the web while searching for the circuit to
 replace a MD-7 or BC-456.
  If you are interested in a copy of the auction catalog send an e-mail
  to VK2BCU "at" OperaMail.com.
  I will send a catalog on a  "once-only" reply to any e-mail in my
  mail-box before monday evening (my time = Sunday US time.)

 "Command" modulator
 I found one circuit for a homebrew modulator - this used cathode
 modulation, not plate modulation.
 I you know of the circuit for a home-brew modulator for a "command"
 set, I'd be pleased to get a reference.
 The other alternative is to use a solid state high voltage power
 amplifier as a combination PSU-modulator.
 If you have a pointer to a circuit for power supply or modulator for
 the "command" transmitters, I'd be pleased to see it here.

 73 de Les
 
First few lines from the catalog mentioned above are:

"Catalog for Radio Electronics Auction at InfoAge – 27 April, 2013"
"This list is provided for your convenience, it is not the order of
sale. Items will be sold in random order.
Possibly after 1 PM on day of sale we will take requests for remaining
items that you are interested in. Condition
of the merchandise ranges from new/restored to fair and poor. Many just
need a good cleaning. Bulk tube lots
are “as found” and have not been picked over."



  73 de Les Smith
  vk2bcu at operamail.com

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