[drakelist] 34 PNB Noise Blanker

Came out of a TR4CWRIT Noise Blanker $100 plus shipping Kevin [EMAIL PROTECTED]

Re: [drakelist] U9003 DR-7 PROM Chip- Copy?

"MICHAEL TALLENT" <[EMAIL PROTECTED]> made an utterance to the drakelist gang -- I have some 82S129 and the Fairchild equivalent 93427 and a Data I/O 22A programmer that can program most all the bipolar proms, if someone can send

Re: [drakelist] U9003 DR-7 PROM Chip- Copy?

Actually the TR7 came out before DOS or just as DOS was arriving on the scene so computers were a rarity in business at that time. Since the 74S387 was mask programmed for Drake and house numbered I suspect that National Semiconductor or whoever the IC maker was helped Drake develop the truth ta

Re: [drakelist] U9003 DR-7 PROM Chip- Copy?

"David Stinson" <[EMAIL PROTECTED]> made an utterance to the drakelist gang -- - Original Message - From: <[EMAIL PROTECTED]> Subject: Re: [drakelist] U9003 DR-7 PROM Chip- Copy? > I wonder what Drake used. Was it Dos,

[drakelist] Looking to complete my 4-line

Ronald Skipper <[EMAIL PROTECTED]> made an utterance to the drakelist gang -- Hello to all, I'm new to the reflector. I'm looking for a few items to complete my 4-line setup. 1. C-4 station console/power master/coax switch 2

Re: [drakelist] U9003 DR-7 PROM Chip- Copy?

"David Stinson" <[EMAIL PROTECTED]> made an utterance to the drakelist gang -- I did a little reading in the TR-7 service manual. U9003's job is to watch the BCD codes when you push the "up" and "down" buttons and to disable them

Re: [drakelist] U9003 DR-7 PROM Chip- Copy?

Very interesting post. Suddenly I realize there is another fly in the ointment besides part and hardware obsolescence: the operating system. I wonder what Drake used. Was it Dos, CP/M, or what? Also what is the data format? Im curious. -- Original message -- From: "Jim P