Re: [Elecraft] [RFI] Mysterious K3 Symptoms - RFI? : Important addendum
FWIW: I used to use the RRC1258 to access a remote station, and I had this issue at times. The AF gain would go very low, any small movement of the AF Gain control would restore it instantly. It's old info, I don't use the 1258 anymore, but it was real for me when I did. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County Hisashi T Fujinaka wrote on 3/14/2024 2:01 PM: I have similar problems but I was thinking it was hamlib because of the way it triggers for me. It happens running wsjtx on an M2 Macbook Pro and remoterig down to the radio in my basement. There's a K3/0 in my office -> remoterig -> K3 & KPA1500 in the basement. Almost every time I move my transmit frequency the RX gain goes down to almost nothing. Jiggling the AF gain brings it back to normal. It doesn't always happen immediately when changing bands but changing TX frequency in-band triggers it right away. On Wed, 13 Mar 2024, Pete Smith N4ZR wrote: Operating in this morning's CWT, and saw a recurrence of strange RFI-like symptoms. After transmitting, RX gain sometimes was severely reduced, but simply moving the K-3's AF gain a little would cause recovery to normal. Sometimes, this was accompanied by a HI CURR warning on the K3's display, often occurring several seconds after switching back to receive. My working theory has been RFI, but my station is pretty thoroughly fitted with toroids. Still, there seems to be a correlation between running my KPA-1500 at about 1100 watts and this set of symptoms, which I have not been able to trigger running 100 watts To further confuse things, I just had another episode of this occurring *several minutes* after the last transmission. One culprit I can think of is a 100-foot Ethernet cable between my station and my FIOS router. I have bought a shielded replacement but have not yet installed it. After reading some of the recent commentary about so-called "shielded" cables, I'm wondering if this is worth doing. Any suggestions, either K-3-specific or more general, would be much appreciated. **ADDENDUM** - I just tested into my dummy load with the amp operational at 1100 watts, and triggered all the same symptoms. -- This email has been checked for viruses by AVG antivirus software. www.avg.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] [RFI] Mysterious K3 Symptoms - RFI? : Important addendum
I have similar problems but I was thinking it was hamlib because of the way it triggers for me. It happens running wsjtx on an M2 Macbook Pro and remoterig down to the radio in my basement. There's a K3/0 in my office -> remoterig -> K3 & KPA1500 in the basement. Almost every time I move my transmit frequency the RX gain goes down to almost nothing. Jiggling the AF gain brings it back to normal. It doesn't always happen immediately when changing bands but changing TX frequency in-band triggers it right away. On Wed, 13 Mar 2024, Pete Smith N4ZR wrote: Operating in this morning's CWT, and saw a recurrence of strange RFI-like symptoms. After transmitting, RX gain sometimes was severely reduced, but simply moving the K-3's AF gain a little would cause recovery to normal. Sometimes, this was accompanied by a HI CURR warning on the K3's display, often occurring several seconds after switching back to receive. My working theory has been RFI, but my station is pretty thoroughly fitted with toroids. Still, there seems to be a correlation between running my KPA-1500 at about 1100 watts and this set of symptoms, which I have not been able to trigger running 100 watts To further confuse things, I just had another episode of this occurring *several minutes* after the last transmission. One culprit I can think of is a 100-foot Ethernet cable between my station and my FIOS router. I have bought a shielded replacement but have not yet installed it. After reading some of the recent commentary about so-called "shielded" cables, I'm wondering if this is worth doing. Any suggestions, either K-3-specific or more general, would be much appreciated. **ADDENDUM** - I just tested into my dummy load with the amp operational at 1100 watts, and triggered all the same symptoms. -- Hisashi T Fujinaka - ht...@twofifty.com BSEE + BSChem + BAEnglish + MSCS + $2.50 = coffee __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] SOLD......Thanks All SALE- KX3
SOLD..Thanks all On Mar 14, 2024, at 1:27 PM, ken057...@gmail.com wrote: Hi all, I have a nice KX3 for sale. I bought it second hand to have as a backup to my original KX2 and KX3 but quickly realized it's just not going to get enough use. It's S/N 10,7XX and was a home use radio here as well as with the first owner. Very low time and works just fine. Included items are a manual copy as well as the installed items below. No batteries. 29in power cord with power pole connectors. Photos can be sent on request. - Antenna Tuner, KXAT-ATU. - Dual Passband Roofing Filter, KXFL3. - Internal Charger, KXBC3. - Latest Firmware versions installed: MCU- 03.02 DSP- 01.52 Will be shipped in the original box. $1100.00 includes CONUS shipping, which is thru-the-roof anymore! Please add $10.00 for West of the Mississippi. Postal Money, Bank Cashiers Check, "Cleared" Personal Check, Zelle or PayPal Friends and Family are all ok. Please add $30.00 for PayPal Goods and Services. No returns/refunds for all the usual reasons. Thank you for reading! Ken, W2GIW. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K4D for bargain price on eBay
I can’t find the original ad now, but I’m sure it doesn’t indicate that there are more than 3 toroids. As you’ve bought a kit, I tend to believe you and agree with your comments. 73, Alan - G4GNX South Coast UK Elecraft K4D / KPA500 / KAT500 / IC-9700 > On 14 Mar 2024, at 14:51, Gregory Mitchell wrote: > > It's actually 24 pieces of ferrite, not 3, if you read the description. Good > quality ferrite is not cheap and I don't think the markup here is outlandish > at all. at $5/each on avg you'd still spend $120. I recently bought this kit > from them, with free shipping, so I think the cost per toroid/snap-on is > reasonable considering Palomar Engineers gets quality, known ferrite mixes vs > others who you don't know what you are getting. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] For Sale: Late Edition of Fred Cady's K3s & P3 Book - As New
For sale here before I move it to other venues, is my like new copy of Prof. Fred Cady's 327 page exhaustive 2017 reference entitled: "The Elecraft K3s and P3 (Getting the most from Your High Performance Station)" $59.95 plus shipping plus 5% if you want to use PAYPAL' Contact me for my PAYPAL account name. Shipping is $8 OR Simple check or m.o to my QTH address listed on my QRZ page. QSL if interested. 73, Doug W5JV Visit https://www.qrz.com/db/W5JV for some great vacuum tube finds. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] SALE- KX3
Hi all, I have a nice KX3 for sale. I bought it second hand to have as a backup to my original KX2 and KX3 but quickly realized it's just not going to get enough use. It's S/N 10,7XX and was a home use radio here as well as with the first owner. Very low time and works just fine. Included items are a manual copy as well as the installed items below. No batteries. 29in power cord with power pole connectors. Photos can be sent on request. - Antenna Tuner, KXAT-ATU. - Dual Passband Roofing Filter, KXFL3. - Internal Charger, KXBC3. - Latest Firmware versions installed: MCU- 03.02 DSP- 01.52 Will be shipped in the original box. $1100.00 includes CONUS shipping, which is thru-the-roof anymore! Please add $10.00 for West of the Mississippi. Postal Money, Bank Cashiers Check, "Cleared" Personal Check, Zelle or PayPal Friends and Family are all ok. Please add $30.00 for PayPal Goods and Services. No returns/refunds for all the usual reasons. Thank you for reading! Ken, W2GIW. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K4D for bargain price on eBay
Tie wraps work also. John WA1EAZ > On Mar 14, 2024, at 10:59 AM, jerry wrote: > > On 2024-03-14 07:51, Gregory Mitchell wrote: > >> think the cost per toroid/snap-on > > Here's something I found out about snap-on ferrites: Don't depend on the > plastic shell. I had installed snap-ons > on the power leads of my homebrew LDMOS linear. When I transmitted, I could > hear my voice coming out of the box. > It was the ferrites buzzing. I popped them apart, reinstalled with a drop of > cyanoacrylate glue on each surface, and > all was well. > > - Jerry, KF6VB > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to jstengrev...@comcast.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K4D for bargain price on eBay
On 2024-03-14 07:51, Gregory Mitchell wrote: think the cost per toroid/snap-on Here's something I found out about snap-on ferrites: Don't depend on the plastic shell. I had installed snap-ons on the power leads of my homebrew LDMOS linear. When I transmitted, I could hear my voice coming out of the box. It was the ferrites buzzing. I popped them apart, reinstalled with a drop of cyanoacrylate glue on each surface, and all was well. - Jerry, KF6VB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K4D for bargain price on eBay
It's actually 24 pieces of ferrite, not 3, if you read the description. Good quality ferrite is not cheap and I don't think the markup here is outlandish at all. at $5/each on avg you'd still spend $120. I recently bought this kit from them, with free shipping, so I think the cost per toroid/snap-on is reasonable considering Palomar Engineers gets quality, known ferrite mixes vs others who you don't know what you are getting. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Cable
Hi Harold, You will connect the K2 to the KXPA100 as you would any 3rd party transceiver setup as described in the KXPA100 manual. You will just route RF from the K2 to the KXPA100 input and provide a keying line from the K2 to the keying input of the KXPA100. This means you will need to add the capability of providing a keying output to the K2 as it is not available natively. If you happen to have an older K2 with the K60XV module installed, you can pick off the proper keying signal from that module. Otherwise, you will need a circuit to proved the keying signal. There are a number of circuits out there on the web that show how to do this. I happen to sell a kit for the K2 that was designed by Tom Hammond, N0SS (SK) to do exactly this: https://www.w8fgu.com/k2_trdriver.html. It mounts where the K60XV module would reside in the K2. With all of this said, you will not have a really tight integration with the KXPA100 as you would the obsolete KPA100. But it works very well. Band changes will be manual, but RF sensing in the KXPA100 would provide automatic band changing with just a dit of RF from the K2. Hope this helps. If you have further questions or need support for your K2, I am also the K2 support guy for Elecraft as well. My predecessor Don Wilhelm, W3FPR is usually monitoring this list and provides excellent support for all things Elecraft where he can. 73, Dave, W8FGU On 3/14/2024 8:52:22 AM, "Harold Howells" wrote: What cable is needed to use the KXPA 100 amplifier with the K2 transceiver? Thanks HH Harold Howells hhowe...@intrq.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to d...@w8fgu.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Cable
What cable is needed to use the KXPA 100 amplifier with the K2 transceiver? Thanks HH Harold Howells hhowe...@intrq.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
