Topband: ICE Model 135B Preamp

2023-11-07 Thread James C. Hall, MD
Does anyone know the active element or have a schematic for the ICE 135B preamp ? I really like this preamp and bought it years ago (for about 50 bucks). It is no longer working and suspect the FET (?) is blown. 73, Jamie WB4YDL Sent from my iPad _ Searchable Archives:

Re: Topband: K5P in Zone 14

2016-01-16 Thread James C. Hall, MD
K5P was very loud last night and I had just thrown a 500' BOG down yesterday afternoon. Craig K9CT was at the key. I'm in NW TN, about 30 miles East of MS River. 73, Jamie WB4YDL Sent from my iPad > On Jan 16, 2016, at 12:27 PM, Roger D Johnson wrote: > > According to

Re: Topband: K5P in Zone 14

2016-01-16 Thread James C. Hall, MD
To: 'James C. Hall, MD' Subject: RE: Topband: K5P in Zone 14 Hello James! I see you have a 500 foot bog, I need some advice. I put down a 200 foot BOG for 80m & 160m. Seems to work well on 80 but virtually no directionality on 160m. I was told that performance would drop dramatically on

Re: Topband: Bad tower shunt capacitor

2014-02-01 Thread James C. Hall, MD
Just an update on this - last night FT5ZM was spotted briefly on 160M and I went down to listen for awhile. I didn't hear much and what I did hear I couldn't make myself believe it was them ! So I thought I would try and load up the tower and see if it repeated its bad behavior. I couldn't get

Topband: Bad tower shunt capacitor

2014-01-29 Thread James C. Hall, MD
I have an omega matched 120 foot tower and I apparently have a bad vacuum variable capacitor. Upon applying more than about 300 watts, the SWR goes off scale. Tuning it out and trying again, yields the same thing. The question is which capacitor is the culprit. These are surplus Soviet caps

Re: Topband: Bad tower shunt capacitor

2014-01-29 Thread James C. Hall, MD
WB4YDL Sent from my iPad On Jan 29, 2014, at 7:11 PM, wb6r...@mac.com wrote: Have someone hit the key while you watch which one flashes over. Steve WB6RSE On Jan 29, 2014, at 4:26 PM, James C. Hall, MD wrote: Any suggestions ? -- This message has been scanned for viruses

Re: Topband: Help With First 80M 4-Square

2013-12-23 Thread James C. Hall, MD
Hi Wayne: Instead of self-supporting elements for my 4-square, I used rope-supported wire elements hung from the top of my 120 foot tower. I used 4x4 posts in concrete to support the base of each vertical element and Budwig connectors to solder the vertical elements on the center conductor and

Re: Topband: 160 meter elevated vertical

2012-10-20 Thread James C. Hall, MD
And you don't need a hail-mary super choke for the job. Hi Guy: I'm going to try elevated radials on my shunt-fed tower. I was thinking about constructing an Ugly Balun for the job with 4 PVC and Bury-Flex. What kind of choke do you use / recommend ? About how much coax should be wound on the

Re: Topband: QSL from Gaby, OD5NJ on 160 m

2012-02-13 Thread James C. Hall, MD
Yes, this is the way to do it. OD5NH was getting this bad rap too. You don't need to send a SAE to OD5NH either as he returns it via postcard - avoids suspicion by the police. Registered mail is quite expensive however. 73, Jamie WB4YDL -Original Message- From: