Re: [Drakelist] TR-7 PBT 10K Pots
Ron, Most common used type of these pots overhere in the Netherlands (Europe?) is the vertical placed (most right picture on my website). How would you like to adjust them when mounted on the back of the PCB? If you can get the other, horizontal mounted, model (left pica) you can give it a try. Carel - PA0CMU. > Date: Mon, 1 Feb 2010 02:31:07 -0800 > From: wd8...@yahoo.com > To: drakelist@zerobeat.net; epy...@indy.rr.com > Subject: Re: [Drakelist] TR-7 PBT 10K Pots > > While poking around my power supply board this weekend with my intermittent > TR7, I thought about change out of the pots. I know I hear that you need to > not only change the pots, but also move the fixed resistors to the rear. > So > > Is there any reason why you can not just mount the multi-turn pots on the > rear of the PCB thereby saving the extra rework effort of also moving the > fixed resistors? > > TNX es 73, > Ron WD8SBB > > --- On Sun, 1/31/10, Joe Pyles wrote: > > > From: Joe Pyles > > Subject: Re: [Drakelist] TR-7 PBT 10K Pots > > To: drakelist@zerobeat.net > > Date: Sunday, January 31, 2010, 8:07 PM > > > > > > You need one Bourns 1k pot 3296W-1-102LF for > > the 10 volt > > adjustment, and 5 Bourns 10k pots 3296W-1-103LF for the > > passband > > frequency adjustments. > > > > They are $2.19 each at Newark. You also have to move the > > resistors in > > between the original pots to the backside of the board. > > > > Here is a link to a website that has very good pictures of > > this. > > > > > > > > http://members.ziggo.nl/cmulder/drake.htm#bookmark5 > > > > > > 73, Joe Pyles KC9LAD > > > > > > > > > > At 06:54 PM 1/31/2010, you wrote: > > > > Good > > Afternoon, > > > > > > My TR-7's PBT pots have finally reached the point of > > failing to maintain > > the correct frequency for both U/Lsb. I am going to > > replace all 5 > > pots when I > > > > pull the board and was wondering if anyone has had much > > luck finding > > higher quality replacements? I am considering 15-20 > > turn types if > > they will fit > > > > into the same space as the originals. I'd rather > > not have to modify > > the board too much, but would like to hear from anyone who > > might have > > tried this. > > > > > > I've looked at Mouser and found some that are close, > > but figured I'd try > > this resource first. > > > > > > Thanks. > > > > > > Robb NØRU > > > > Woodland Park, CO. > > > > > > > > > > -Inline Attachment Follows- > > > > ___ > > Drakelist mailing list > > Drakelist@zerobeat.net > > http://mailman.zerobeat.net/mailman/listinfo/drakelist > > > > > > > ___ > Drakelist mailing list > Drakelist@zerobeat.net > http://mailman.zerobeat.net/mailman/listinfo/drakelist _ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] TR-7 PBT 10K Pots
While poking around my power supply board this weekend with my intermittent TR7, I thought about change out of the pots. I know I hear that you need to not only change the pots, but also move the fixed resistors to the rear. So Is there any reason why you can not just mount the multi-turn pots on the rear of the PCB thereby saving the extra rework effort of also moving the fixed resistors? TNX es 73, Ron WD8SBB --- On Sun, 1/31/10, Joe Pyles wrote: > From: Joe Pyles > Subject: Re: [Drakelist] TR-7 PBT 10K Pots > To: drakelist@zerobeat.net > Date: Sunday, January 31, 2010, 8:07 PM > > > You need one Bourns 1k pot 3296W-1-102LF for > the 10 volt > adjustment, and 5 Bourns 10k pots 3296W-1-103LF for the > passband > frequency adjustments. > > They are $2.19 each at Newark. You also have to move the > resistors in > between the original pots to the backside of the board. > > Here is a link to a website that has very good pictures of > this. > > > > http://members.ziggo.nl/cmulder/drake.htm#bookmark5 > > > 73, Joe Pyles KC9LAD > > > > > At 06:54 PM 1/31/2010, you wrote: > > Good > Afternoon, > > > My TR-7's PBT pots have finally reached the point of > failing to maintain > the correct frequency for both U/Lsb. I am going to > replace all 5 > pots when I > > pull the board and was wondering if anyone has had much > luck finding > higher quality replacements? I am considering 15-20 > turn types if > they will fit > > into the same space as the originals. I'd rather > not have to modify > the board too much, but would like to hear from anyone who > might have > tried this. > > > I've looked at Mouser and found some that are close, > but figured I'd try > this resource first. > > > Thanks. > > > Robb NØRU > > Woodland Park, CO. > > > > > -Inline Attachment Follows- > > ___ > Drakelist mailing list > Drakelist@zerobeat.net > http://mailman.zerobeat.net/mailman/listinfo/drakelist > ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] TR-7 PBT 10K Pots
Thanks to all who replied, have the info that I needed. Better research on my part would have found this, but nice to have the resource. 73, Robb NØRU Woodland Park, CO. ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] TR-7 PBT 10K Pots
You need one Bourns 1k pot 3296W-1-102LF for the 10 volt adjustment, and 5 Bourns 10k pots 3296W-1-103LF for the passband frequency adjustments. They are $2.19 each at Newark. You also have to move the resistors in between the original pots to the backside of the board. Here is a link to a website that has very good pictures of this. http://members.ziggo.nl/cmulder/drake.htm#bookmark5 73, Joe Pyles KC9LAD At 06:54 PM 1/31/2010, you wrote: Good Afternoon, My TR-7's PBT pots have finally reached the point of failing to maintain the correct frequency for both U/Lsb. I am going to replace all 5 pots when I pull the board and was wondering if anyone has had much luck finding higher quality replacements? I am considering 15-20 turn types if they will fit into the same space as the originals. I'd rather not have to modify the board too much, but would like to hear from anyone who might have tried this. I've looked at Mouser and found some that are close, but figured I'd try this resource first. Thanks. Robb NØRU Woodland Park, CO. ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] TR-7 PBT 10K Pots
Good Afternoon, My TR-7's PBT pots have finally reached the point of failing to maintain the correct frequency for both U/Lsb. I am going to replace all 5 pots when I pull the board and was wondering if anyone has had much luck finding higher quality replacements? I am considering 15-20 turn types if they will fit into the same space as the originals. I'd rather not have to modify the board too much, but would like to hear from anyone who might have tried this. I've looked at Mouser and found some that are close, but figured I'd try this resource first. Thanks. Robb NØRU Woodland Park, CO. ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
