Dear list members, I have a matched quad of MRF-428 for sale, of course these are new and unused. I have a few matched pairs of equivalents for sale as well. Anyone interested? I am in DL, we may use
Dear list members, I am thinking to find a "Mini Lini" built by SGC. I appreciate the size, weight and even the monoband design fullfills my requirements. Anyway, I would like to know who owns such a
Dear List Members, I have a few actuator coils for Jennings vacuum relays for sale. These coils will fit into relays like RB7A-26N, RB3-26N, RE6B-26S, RJ8A-26, RJ8H-26, RJ10H-26S and RS8-26S, just to
Hi, I underline the experience of Bill with mine: I have used the 470pF / 15kV / 40kVAr version and the 330pF / 15kV / 30kVAr type for matching shortwave broadband antennas in applications for up to
Hi, from a professional application I have a few ferrite toroids left which we used to build BIG BalUns and UnUns for up to 5kWcw RF-power and an acceptable load-VSWR of up to 3:1. We have built tran
Hi, I have a few RF-Reed-relays in my stock which I do not need. They have the following specs: max. voltage: 10kV max current @ 30MHz: 5A continous capacity between contacts: 0.5pF capacity contact-
Hi, I still have two RF-Reed-relays in my stock which I do not need. I kept these for a project with VERY fast QSK-switching in a QRO-application. They have the following specs: max. voltage: 10kV ma
Hi, I have disassembled a lot of professional RF-gear built by Collins Radio and I have selected and assorted all parts into categories. Finally I have found that I have quite a lot of electrodes com
Hi Ulf, you may place and mount the starting capacitor in the mains supply compartment or wherever you have enough space. A few feet of cable should do no harm at 50Hz. You may even shield this cable
Hi, I have two professional T/R-switches for sale. I took these from Rohde & Schwarz 1kWcw linear HF power amplifiers. They are housed in small metal boxes with some 16 x 8 x 4cm size. They have thre
Dear List Members, I have an unused 3B28 rectifier tube standing in an unused ceramic socket. As far as I know this tubes is suitable to be used in a Collins 30S1. Here is my question: Is this correc
Hi, I have a few turns counters left which were manufactured by (or for?) Collins Radio. At least they carry a Collins Part No. and they look very similar to the knobs we all know from Collins gear l
Dear Roger, the industry of ham radio gear placed such a weird perfectionism in our brain that we find a home brewed linear amp which has not all knobs symmetrical arranged and in one line is UGLY! W
Dear list members, I have three HF-amplifier modules for sale which come from Rohde & Schwarz 1kW transmitters. Each of these delivers 500Wcw of continous (24h@365d) RF-power. These three are complet
Hi, I have a really BIG roller coil for sale (or trade). I took it from a mobile communications jammer transmitter of the russian forces.It was able to produce 5kWcw. The roller coil has a balanced c
Hi, from my job I have a bunch of spare magnectic coils left which come from Jennings vacuum relays like RB-4, RB-3 or RB-7. If these relays have a failure, seldom the contacts AND the coil are defec
Hi, several vacuum relays have contact pins made from Tungsten, for example the elder glass types RB-3 and RB-7 from Jennings or compareable types from Kilovac. You can't solder on the short Tungsten
Dear Jim, pure water will take metal ions of all metal surfaces it come in contact with, to build a solution, so it will corrode metal! I have repaired professional dummy loads a few years ago: I do
Kanthal-Globar or Cesiwid sells such professional water(-stream) cooled rf-loads... 73 de Andy DH5AK _______________________________________________ Amps mailing list Amps@contesting.com http://lists