SA-5010

[Terry Perdue]

Just to correct some mis-information, there was no 'circuit error' that
halved the available memory space - believe me, our Evaluation department
would have caught that. I'm quite certain that the ONLY things that changed
between the original SA-5010 and SA-5010A were the color scheme and the
addition of two small bypass caps on the paddle inputs, to prevent a high RF
field from causing problems. (As I recall, one of our proof-builders had his
antenna just above his shack.) There were no firmware changes either. Maybe
someone can tell me where C4 was in the circuit. I don't recall any cap
being removed.

Also, the speed you set from the keypad IS accurate as long as the Sending
Speed is set to the same value. When the Sending Speed is set lower, the
overall speed won't be what you set. For example, if Speed = 20, Send Speed
= 10, the average speed won't be 10. Unfortunately, I didn't realize how
easy it would have been to actually calculate the spacing required until I
designed the HD-8999.

If the original poster doesn't find a function label on the bottom of his
keyer, please let me know. I believe I have a new one. If not, I can send
you a copy of the Operation section of the manual.

Terry

-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved.  This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind.  Buyer beware!

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.aspx?list=HEATH
To post - HEATH at LISTS.TEMPE.GOV
Archives - http://lists.tempe.gov/archives/HEATH.html