[Elecraft] KAT500 ANT1 problem

2021-07-12 Thread Andy Durbin
"So if the Asian manufacturer considers 4 mm easier and close enough the pin will be oversize.WW II drawings give the pin diameter as max/min 0.158/0.154 ." Isn't 4. mm = 0.1575 inch? If so, 4 mm is within the quoted WWII spec size range. The problem would not be specifying 4 mm but

Re: [Elecraft] KAT500 ANT1 problem

2021-07-12 Thread Dave
I am using the Times Microwave connectors on Times Microwave LMR-400 for my HF antennas. Except a Belsen 8267 jumper around the rotor to Yagi. The Times Mocrowave connectors for RG8, 214, 214, 9913, and LMR400. I had the LMR400 left over from a job so no cost except the UJF male and one UHF

Re: [Elecraft] KAT500 ANT1 problem

2021-07-12 Thread Jim Brown
On 7/12/2021 9:34 AM, Bill Steffey NY9H wrote: I'll bet he meant Amphenol Yes. Bad fingers! 73, Jim __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] KAT500 ANT1 problem

2021-07-12 Thread Jim Brown
No question about that, but my comments were with respect to coax other than hard line. 73, Jim K9YC On 7/12/2021 8:09 AM, j...@kk9a.com wrote: So does Andrew/Commscope. John KK9A WO2X wrote: Times Microwave also make good connectors. We use them on UHF, but most cables we make are

Re: [Elecraft] KAT500 ANT1 problem

2021-07-12 Thread David Christ
5/32” inches is 0.156” which is 3.968 mm. So if the Asian manufacturer considers 4 mm easier and close enough the pin will be oversize.WW II drawings give the pin diameter as max/min 0.158/0.154 . 5/32 is right in the middle of this range. I don’t have the MILSPEC documentation but guess

Re: [Elecraft] KAT500 ANT1 problem

2021-07-12 Thread Hugo Loranger
Probably! Belden cable with Amphenol connectors ...  Hugo Message d'origine De : Bill Steffey NY9H Date : 2021-07-12 12 h 34 (GMT-05:00) À : Hugo Loranger , elecraft@mailman.qth.net Objet : Re: [Elecraft] KAT500 ANT1 problem I'll bet he meant Amphenol On 7/12/2021

Re: [Elecraft] KAT500 ANT1 problem

2021-07-12 Thread Bill Steffey NY9H
...@audiosystemsgroup.com>> To: elecraft@mailman.qth.net<mailto:elecraft@mailman.qth.net> Subject: Re: [Elecraft] KAT500 ANT1 problem Message-ID: mailto:ec5ede20-52e9-33a4-677a-2fd2c60fd...@audiosystemsgroup.com>> Content-Type: text/plain; charset=utf-8; format=flowed On 7/11/2021 1:52 PM,

Re: [Elecraft] KAT500 ANT1 problem

2021-07-12 Thread Hugo Loranger
> Subject: Re: [Elecraft] KAT500 ANT1 problem Message-ID: mailto:ec5ede20-52e9-33a4-677a-2fd2c60fd...@audiosystemsgroup.com>> Content-Type: text/plain; charset=utf-8; format=flowed On 7/11/2021 1:52 PM, Dave wrote: > What had apparently happened was that I had a batch of the of

Re: [Elecraft] KAT500 ANT1 problem

2021-07-12 Thread rocketnj
Yes, Andrews especially for Heliax hardline  73 Dave wo2x -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of j...@kk9a.com Sent: Monday, July 12, 2021 11:09 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KAT500 ANT1 problem So does Andrew/Commscope

Re: [Elecraft] KAT500 ANT1 problem

2021-07-12 Thread john
So does Andrew/Commscope. John KK9A WO2X wrote: Times Microwave also make good connectors. We use them on UHF, but most cables we make are designed to be put in place semi-permantly. 73 Dave wo2x Sent from my iPad > On Jul 12, 2021, at 12:07 AM, Jim Brown wrote: > > On 7/11/2021 1:52 PM,

Re: [Elecraft] KAT500 ANT1 problem

2021-07-12 Thread john
A PL-259 should have a 5/32" (4mm) pin. John KK9A kd4iz wrote: What had apparently happened was that I had a batch of the offshore made "Amazon Special" PL-259s that appear to have a slightly oversize center pin. The patch cable used until recently had one of them on one end. It had spread

Re: [Elecraft] KAT500 ANT1 problem

2021-07-12 Thread David Decoons
Times Microwave also make good connectors. We use them on UHF, but most cables we make are designed to be put in place semi-permantly. 73 Dave wo2x Sent from my iPad > On Jul 12, 2021, at 12:07 AM, Jim Brown wrote: > > On 7/11/2021 1:52 PM, Dave wrote: >> What had apparently happened was

Re: [Elecraft] KAT500 ANT1 problem

2021-07-11 Thread Jim Brown
On 7/11/2021 1:52 PM, Dave wrote: What had apparently happened was that I had a batch of the offshore made "Amazon Special" PL-259s that appear to have a slightly oversize center pin. For several decades, I've served on the Standards Committee of the Audio Engineering Society with

Re: [Elecraft] KAT500 ANT1 problem

2021-07-11 Thread Andy Durbin
"The secondary toroid of the directional coupler has a direct path to ground. That means there is no straight-through DC path." I may have misunderstood the schematics. What I see is a DC path between J1 input and "ATU". If K20, K21 and K18 are all in the NC state there will be a low

Re: [Elecraft] KAT500 ANT1 problem

2021-07-11 Thread Jack Brindle via Elecraft
Andy, my friend, you are forgetting something. The secondary toroid of the directional coupler has a direct path to ground. That means there is no straight-through DC path. Rare that I catch Andy on something… 73, Jack, W6FB > On Jul 11, 2021, at 6:12 PM, Andy Durbin wrote: > > KAT500

[Elecraft] KAT500 ANT1 problem

2021-07-11 Thread Andy Durbin
KAT500 antenna selection drops to ANT-1 when there is no power on KAT500. Also, with no power on KAT500, the Bypass relay defaults to bypass state. There should be a simple DC path between input RF connector and ANT-1 RF connector if the KAT500 is not powered. Pull the DC input plug and the

Re: [Elecraft] KAT500 ANT1 problem

2021-07-11 Thread Dave
ent: Sunday, July 11, 2021 14:07 To: kd...@frawg.org Subject: RE: [Elecraft] KAT500 ANT1 problem Jack, The KAT500 schematic is on line (partial) https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page1.png https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page2.png https://www.qsl.net/wb

Re: [Elecraft] KAT500 ANT1 problem

2021-07-11 Thread kd4iz
Don, Already gone and replaced... Jack - KD4IZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Don Wilhelm Sent: Sunday, July 11, 2021 17:07 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KAT500 ANT1 problem And discard those "Amazon Special" PL

Re: [Elecraft] KAT500 ANT1 problem

2021-07-11 Thread Don Wilhelm
July 11, 2021 14:07 To: kd...@frawg.org Subject: RE: [Elecraft] KAT500 ANT1 problem Jack, The KAT500 schematic is on line (partial) https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page1.png https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page2.png https://www.qsl.net/wb4kdi/Elecraft/KAT5

Re: [Elecraft] KAT500 ANT1 problem

2021-07-11 Thread Dave
- From: kirk.hard...@k6kar.com Sent: Sunday, July 11, 2021 14:07 To: kd...@frawg.org Subject: RE: [Elecraft] KAT500 ANT1 problem Jack, The KAT500 schematic is on line (partial) https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page1.png https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA

Re: [Elecraft] KAT500 ANT1 problem

2021-07-11 Thread kd4iz
@k6kar.com Sent: Sunday, July 11, 2021 14:07 To: kd...@frawg.org Subject: RE: [Elecraft] KAT500 ANT1 problem Jack, The KAT500 schematic is on line (partial) https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page1.png https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page2.png https://w

[Elecraft] KAT500 ANT1 problem

2021-07-11 Thread kd4iz
All, This is likely something very straight forward, but I do not have a schematic to follow and troubleshoot. Symptom: ANT 1 circuit seems to be dead. No match and fault on switch from ANT2 to ANT1. No receive signal. Tests: Took KAT500 out of line to by-pass tuner, antenna on ANT1 is OK