Re: [Elecraft] z5 resonator leads
In a message dated 30/03/05 17:45:28 GMT Daylight Time, [EMAIL PROTECTED] writes: What do I do with the leads of Z5? Do I clip them, or leave them alone? - The usual rule is if the component wire ends stick out chop 'em off. It can pay dividend in avoiding shorts sometimes and with Z5 there is nothing that would be adversely affected by doing this. Bob, G3VVT ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] z5 resonator leads
After you have you have soldered Z5 into the correct place on the PCB trim the free wire ends as normal as with most other components. Just to avoid any confusion! Bob, G3VVT ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] z5 resonator leads
On Mar 30, 2005, at 12:23 PM, Dan Barker wrote: The confusion would come from the warning not to trim the leads of the relays. Trim ALL other leads. Even ICs?? ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] z5 resonator leads and AGC voltage
On Mar 30, 2005, at 1:34 PM, Rolf Moberg, OH6KXL wrote: My own (SN 4759) measurements with external DMM were as follows: - U2 pint 5 max 3.79 V - U4 OUT 7.9 V I understand there is no big difference between 3.80V and 3.79V. However, when manual asks (page 47) to adjust R1 for a reading of 3.80V volts it seems peculiar not to have enough adjustment scale to achieve or exceed the required voltage. that was exactly why I was somewhat concerned. I was ALMOST there, but not quite. It was disconcerting to me that to get almost there, I had to fully crank the pot to its end stop. When a manual tells me to adjust to a voltage, I like to be somewhere in the middle with my pot...otherwise it makes me wonder what I did wrong. I am still wondering :) As for the alleged 5-10% tolerance of DMMs that one poster suggested, I'm skeptical. If they are that bad, then why doesn't the manual say to adjust to 3.8 volts since the hundredths digit must be totally meaningless. In fact, I see that Fluke claims a .3% DC voltage accuracy of their basic 73/77 multimeters, so thinking the problem lies with my meter doesn't really cut it for me. PB K2 SN 4818 Just getting to the toroids and loving every minute ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] z5 resonator leads and AGC voltage
Paul Bruneau wrote: When a manual tells me to adjust to a voltage, I like to be somewhere in the middle with my pot...otherwise it makes me wonder what I did wrong. I am still wondering :) Indeed. In fact after remeasuring U2 pin 5 voltage I got 3.78 volts. I am not sure whether 3.79 volts is my fault or real previous result. Little difference in any case. I'll remove control panel and check the RP's connections and R1 connections later. Distortion from the kitchen behind the owen is now about 59 + 20dB. It's time to close down for this evening. Rolf oh6kxl ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] z5 resonator leads
Never trim precut to length leads such as ICs and relays, and resistor packs, or crystals. These have just enough extension thru the normal fillet of solder to not be a problem, and to provide a place to clip on for troubleshooting probes. Trimming short leads that were not designed to be trimmed, or the thicker leads on relays, inductor cans, crystals, ICs, resistor packs etc. runs the risk of fracturing the anchor point internal to the package. Always hold on to the lead being cut off to avoid shock of cutting from launching an arrow in an uncontrolled direction. This also buffers the shock of cutting the lead from affecting the component. To summarize, the only leads to trim are individual resistors and capacitors having the thin solder coated leads. Look at a few commercial built boards before you willy nilly start to build something, if you are not experienced at electronics assembly practices. Check out the library at any Engineering college and likely you can find texts on assembly practices; or check for military specifications on the web for assembly practices. 73, Stuart K5KVH ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
